| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Prashant Gaikwad | 3843 | 29.07% | 2 | 2.56% |
| Peter 'p2' De Schrijver | 3808 | 28.80% | 22 | 28.21% |
| Andrew Bresticker | 3205 | 24.24% | 3 | 3.85% |
| Rhyland Klein | 1259 | 9.52% | 12 | 15.38% |
| Bill Huang | 254 | 1.92% | 5 | 6.41% |
| Sowjanya Komatineni | 239 | 1.81% | 1 | 1.28% |
| Dmitry Osipenko | 211 | 1.60% | 7 | 8.97% |
| Thierry Reding | 177 | 1.34% | 8 | 10.26% |
| Jim Lin | 47 | 0.36% | 1 | 1.28% |
| Mark Kuo | 30 | 0.23% | 2 | 2.56% |
| Mikko Perttunen | 29 | 0.22% | 2 | 2.56% |
| Alex Frid | 27 | 0.20% | 2 | 2.56% |
| Danny Huang | 25 | 0.19% | 1 | 1.28% |
| ryang | 23 | 0.17% | 1 | 1.28% |
| Stephen Boyd | 15 | 0.11% | 3 | 3.85% |
| Paul Walmsley | 14 | 0.11% | 2 | 2.56% |
| Wei Yongjun | 7 | 0.05% | 1 | 1.28% |
| Tomeu Vizoso | 5 | 0.04% | 1 | 1.28% |
| Thomas Gleixner | 2 | 0.02% | 1 | 1.28% |
| Sachin Kamat | 1 | 0.01% | 1 | 1.28% |
| Total | 13221 | 78 |
// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2012, 2013, NVIDIA CORPORATION. All rights reserved. */ #include <linux/slab.h> #include <linux/io.h> #include <linux/delay.h> #include <linux/err.h> #include <linux/clk.h> #include <linux/clk-provider.h> #include "clk.h" #define PLL_BASE_BYPASS BIT(31) #define PLL_BASE_ENABLE BIT(30) #define PLL_BASE_REF_ENABLE BIT(29) #define PLL_BASE_OVERRIDE BIT(28) #define PLL_BASE_DIVP_SHIFT 20 #define PLL_BASE_DIVP_WIDTH 3 #define PLL_BASE_DIVN_SHIFT 8 #define PLL_BASE_DIVN_WIDTH 10 #define PLL_BASE_DIVM_SHIFT 0 #define PLL_BASE_DIVM_WIDTH 5 #define PLLU_POST_DIVP_MASK 0x1 #define PLL_MISC_DCCON_SHIFT 20 #define PLL_MISC_CPCON_SHIFT 8 #define PLL_MISC_CPCON_WIDTH 4 #define PLL_MISC_CPCON_MASK ((1 << PLL_MISC_CPCON_WIDTH) - 1) #define PLL_MISC_LFCON_SHIFT 4 #define PLL_MISC_LFCON_WIDTH 4 #define PLL_MISC_LFCON_MASK ((1 << PLL_MISC_LFCON_WIDTH) - 1) #define PLL_MISC_VCOCON_SHIFT 0 #define PLL_MISC_VCOCON_WIDTH 4 #define PLL_MISC_VCOCON_MASK ((1 << PLL_MISC_VCOCON_WIDTH) - 1) #define OUT_OF_TABLE_CPCON 8 #define PMC_PLLP_WB0_OVERRIDE 0xf8 #define PMC_PLLP_WB0_OVERRIDE_PLLM_ENABLE BIT(12) #define PMC_PLLP_WB0_OVERRIDE_PLLM_OVERRIDE BIT(11) #define PLL_POST_LOCK_DELAY 50 #define PLLDU_LFCON_SET_DIVN 600 #define PLLE_BASE_DIVCML_SHIFT 24 #define PLLE_BASE_DIVCML_MASK 0xf #define PLLE_BASE_DIVP_SHIFT 16 #define PLLE_BASE_DIVP_WIDTH 6 #define PLLE_BASE_DIVN_SHIFT 8 #define PLLE_BASE_DIVN_WIDTH 8 #define PLLE_BASE_DIVM_SHIFT 0 #define PLLE_BASE_DIVM_WIDTH 8 #define PLLE_BASE_ENABLE BIT(31) #define PLLE_MISC_SETUP_BASE_SHIFT 16 #define PLLE_MISC_SETUP_BASE_MASK (0xffff << PLLE_MISC_SETUP_BASE_SHIFT) #define PLLE_MISC_LOCK_ENABLE BIT(9) #define PLLE_MISC_READY BIT(15) #define PLLE_MISC_SETUP_EX_SHIFT 2 #define PLLE_MISC_SETUP_EX_MASK (3 << PLLE_MISC_SETUP_EX_SHIFT) #define PLLE_MISC_SETUP_MASK (PLLE_MISC_SETUP_BASE_MASK | \ PLLE_MISC_SETUP_EX_MASK) #define PLLE_MISC_SETUP_VALUE (7 << PLLE_MISC_SETUP_BASE_SHIFT) #define PLLE_SS_CTRL 0x68 #define PLLE_SS_CNTL_BYPASS_SS BIT(10) #define PLLE_SS_CNTL_INTERP_RESET BIT(11) #define PLLE_SS_CNTL_SSC_BYP BIT(12) #define PLLE_SS_CNTL_CENTER BIT(14) #define PLLE_SS_CNTL_INVERT BIT(15) #define PLLE_SS_DISABLE (PLLE_SS_CNTL_BYPASS_SS | PLLE_SS_CNTL_INTERP_RESET |\ PLLE_SS_CNTL_SSC_BYP) #define PLLE_SS_MAX_MASK 0x1ff #define PLLE_SS_MAX_VAL_TEGRA114 0x25 #define PLLE_SS_MAX_VAL_TEGRA210 0x21 #define PLLE_SS_INC_MASK (0xff << 16) #define PLLE_SS_INC_VAL (0x1 << 16) #define PLLE_SS_INCINTRV_MASK (0x3f << 24) #define PLLE_SS_INCINTRV_VAL_TEGRA114 (0x20 << 24) #define PLLE_SS_INCINTRV_VAL_TEGRA210 (0x23 << 24) #define PLLE_SS_COEFFICIENTS_MASK \ (PLLE_SS_MAX_MASK | PLLE_SS_INC_MASK | PLLE_SS_INCINTRV_MASK) #define PLLE_SS_COEFFICIENTS_VAL_TEGRA114 \ (PLLE_SS_MAX_VAL_TEGRA114 | PLLE_SS_INC_VAL |\ PLLE_SS_INCINTRV_VAL_TEGRA114) #define PLLE_SS_COEFFICIENTS_VAL_TEGRA210 \ (PLLE_SS_MAX_VAL_TEGRA210 | PLLE_SS_INC_VAL |\ PLLE_SS_INCINTRV_VAL_TEGRA210) #define PLLE_AUX_PLLP_SEL BIT(2) #define PLLE_AUX_USE_LOCKDET BIT(3) #define PLLE_AUX_ENABLE_SWCTL BIT(4) #define PLLE_AUX_SS_SWCTL BIT(6) #define PLLE_AUX_SEQ_ENABLE BIT(24) #define PLLE_AUX_SEQ_START_STATE BIT(25) #define PLLE_AUX_PLLRE_SEL BIT(28) #define PLLE_AUX_SS_SEQ_INCLUDE BIT(31) #define XUSBIO_PLL_CFG0 0x51c #define XUSBIO_PLL_CFG0_PADPLL_RESET_SWCTL BIT(0) #define XUSBIO_PLL_CFG0_CLK_ENABLE_SWCTL BIT(2) #define XUSBIO_PLL_CFG0_PADPLL_USE_LOCKDET BIT(6) #define XUSBIO_PLL_CFG0_SEQ_ENABLE BIT(24) #define XUSBIO_PLL_CFG0_SEQ_START_STATE BIT(25) #define SATA_PLL_CFG0 0x490 #define SATA_PLL_CFG0_PADPLL_RESET_SWCTL BIT(0) #define SATA_PLL_CFG0_PADPLL_USE_LOCKDET BIT(2) #define SATA_PLL_CFG0_SEQ_ENABLE BIT(24) #define SATA_PLL_CFG0_SEQ_START_STATE BIT(25) #define PLLE_MISC_PLLE_PTS BIT(8) #define PLLE_MISC_IDDQ_SW_VALUE BIT(13) #define PLLE_MISC_IDDQ_SW_CTRL BIT(14) #define PLLE_MISC_VREG_BG_CTRL_SHIFT 4 #define PLLE_MISC_VREG_BG_CTRL_MASK (3 << PLLE_MISC_VREG_BG_CTRL_SHIFT) #define PLLE_MISC_VREG_CTRL_SHIFT 2 #define PLLE_MISC_VREG_CTRL_MASK (2 << PLLE_MISC_VREG_CTRL_SHIFT) #define PLLCX_MISC_STROBE BIT(31) #define PLLCX_MISC_RESET BIT(30) #define PLLCX_MISC_SDM_DIV_SHIFT 28 #define PLLCX_MISC_SDM_DIV_MASK (0x3 << PLLCX_MISC_SDM_DIV_SHIFT) #define PLLCX_MISC_FILT_DIV_SHIFT 26 #define PLLCX_MISC_FILT_DIV_MASK (0x3 << PLLCX_MISC_FILT_DIV_SHIFT) #define PLLCX_MISC_ALPHA_SHIFT 18 #define PLLCX_MISC_DIV_LOW_RANGE \ ((0x1 << PLLCX_MISC_SDM_DIV_SHIFT) | \ (0x1 << PLLCX_MISC_FILT_DIV_SHIFT)) #define PLLCX_MISC_DIV_HIGH_RANGE \ ((0x2 << PLLCX_MISC_SDM_DIV_SHIFT) | \ (0x2 << PLLCX_MISC_FILT_DIV_SHIFT)) #define PLLCX_MISC_COEF_LOW_RANGE \ ((0x14 << PLLCX_MISC_KA_SHIFT) | (0x38 << PLLCX_MISC_KB_SHIFT)) #define PLLCX_MISC_KA_SHIFT 2 #define PLLCX_MISC_KB_SHIFT 9 #define PLLCX_MISC_DEFAULT (PLLCX_MISC_COEF_LOW_RANGE | \ (0x19 << PLLCX_MISC_ALPHA_SHIFT) | \ PLLCX_MISC_DIV_LOW_RANGE | \ PLLCX_MISC_RESET) #define PLLCX_MISC1_DEFAULT 0x000d2308 #define PLLCX_MISC2_DEFAULT 0x30211200 #define PLLCX_MISC3_DEFAULT 0x200 #define PMC_SATA_PWRGT 0x1ac #define PMC_SATA_PWRGT_PLLE_IDDQ_VALUE BIT(5) #define PMC_SATA_PWRGT_PLLE_IDDQ_SWCTL BIT(4) #define PLLSS_MISC_KCP 0 #define PLLSS_MISC_KVCO 0 #define PLLSS_MISC_SETUP 0 #define PLLSS_EN_SDM 0 #define PLLSS_EN_SSC 0 #define PLLSS_EN_DITHER2 0 #define PLLSS_EN_DITHER 1 #define PLLSS_SDM_RESET 0 #define PLLSS_CLAMP 0 #define PLLSS_SDM_SSC_MAX 0 #define PLLSS_SDM_SSC_MIN 0 #define PLLSS_SDM_SSC_STEP 0 #define PLLSS_SDM_DIN 0 #define PLLSS_MISC_DEFAULT ((PLLSS_MISC_KCP << 25) | \ (PLLSS_MISC_KVCO << 24) | \ PLLSS_MISC_SETUP) #define PLLSS_CFG_DEFAULT ((PLLSS_EN_SDM << 31) | \ (PLLSS_EN_SSC << 30) | \ (PLLSS_EN_DITHER2 << 29) | \ (PLLSS_EN_DITHER << 28) | \ (PLLSS_SDM_RESET) << 27 | \ (PLLSS_CLAMP << 22)) #define PLLSS_CTRL1_DEFAULT \ ((PLLSS_SDM_SSC_MAX << 16) | PLLSS_SDM_SSC_MIN) #define PLLSS_CTRL2_DEFAULT \ ((PLLSS_SDM_SSC_STEP << 16) | PLLSS_SDM_DIN) #define PLLSS_LOCK_OVERRIDE BIT(24) #define PLLSS_REF_SRC_SEL_SHIFT 25 #define PLLSS_REF_SRC_SEL_MASK (3 << PLLSS_REF_SRC_SEL_SHIFT) #define UTMIP_PLL_CFG1 0x484 #define UTMIP_PLL_CFG1_XTAL_FREQ_COUNT(x) (((x) & 0xfff) << 0) #define UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(x) (((x) & 0x1f) << 27) #define UTMIP_PLL_CFG1_FORCE_PLL_ACTIVE_POWERDOWN BIT(12) #define UTMIP_PLL_CFG1_FORCE_PLL_ENABLE_POWERDOWN BIT(14) #define UTMIP_PLL_CFG1_FORCE_PLL_ENABLE_POWERUP BIT(15) #define UTMIP_PLL_CFG1_FORCE_PLLU_POWERDOWN BIT(16) #define UTMIP_PLL_CFG1_FORCE_PLLU_POWERUP BIT(17) #define UTMIP_PLL_CFG2 0x488 #define UTMIP_PLL_CFG2_STABLE_COUNT(x) (((x) & 0xfff) << 6) #define UTMIP_PLL_CFG2_ACTIVE_DLY_COUNT(x) (((x) & 0x3f) << 18) #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_A_POWERDOWN BIT(0) #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_A_POWERUP BIT(1) #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_B_POWERDOWN BIT(2) #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_B_POWERUP BIT(3) #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_C_POWERDOWN BIT(4) #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_C_POWERUP BIT(5) #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_D_POWERDOWN BIT(24) #define UTMIP_PLL_CFG2_FORCE_PD_SAMP_D_POWERUP BIT(25) #define UTMIP_PLL_CFG2_PHY_XTAL_CLOCKEN BIT(30) #define UTMIPLL_HW_PWRDN_CFG0 0x52c #define UTMIPLL_HW_PWRDN_CFG0_IDDQ_SWCTL BIT(0) #define UTMIPLL_HW_PWRDN_CFG0_IDDQ_OVERRIDE BIT(1) #define UTMIPLL_HW_PWRDN_CFG0_CLK_ENABLE_SWCTL BIT(2) #define UTMIPLL_HW_PWRDN_CFG0_SEQ_IN_SWCTL BIT(4) #define UTMIPLL_HW_PWRDN_CFG0_SEQ_RESET_INPUT_VALUE BIT(5) #define UTMIPLL_HW_PWRDN_CFG0_USE_LOCKDET BIT(6) #define UTMIPLL_HW_PWRDN_CFG0_SEQ_ENABLE BIT(24) #define UTMIPLL_HW_PWRDN_CFG0_SEQ_START_STATE BIT(25) #define PLLU_HW_PWRDN_CFG0 0x530 #define PLLU_HW_PWRDN_CFG0_CLK_SWITCH_SWCTL BIT(0) #define PLLU_HW_PWRDN_CFG0_CLK_ENABLE_SWCTL BIT(2) #define PLLU_HW_PWRDN_CFG0_USE_LOCKDET BIT(6) #define PLLU_HW_PWRDN_CFG0_USE_SWITCH_DETECT BIT(7) #define PLLU_HW_PWRDN_CFG0_SEQ_ENABLE BIT(24) #define PLLU_HW_PWRDN_CFG0_IDDQ_PD_INCLUDE BIT(28) #define XUSB_PLL_CFG0 0x534 #define XUSB_PLL_CFG0_UTMIPLL_LOCK_DLY 0x3ff #define XUSB_PLL_CFG0_PLLU_LOCK_DLY (0x3ff << 14) #define PLLU_BASE_CLKENABLE_USB BIT(21) #define PLLU_BASE_OVERRIDE BIT(24) #define pll_readl(offset, p) readl_relaxed(p->clk_base + offset) #define pll_readl_base(p) pll_readl(p->params->base_reg, p) #define pll_readl_misc(p) pll_readl(p->params->misc_reg, p) #define pll_override_readl(offset, p) readl_relaxed(p->pmc + offset) #define pll_readl_sdm_din(p) pll_readl(p->params->sdm_din_reg, p) #define pll_readl_sdm_ctrl(p) pll_readl(p->params->sdm_ctrl_reg, p) #define pll_writel(val, offset, p) writel_relaxed(val, p->clk_base + offset) #define pll_writel_base(val, p) pll_writel(val, p->params->base_reg, p) #define pll_writel_misc(val, p) pll_writel(val, p->params->misc_reg, p) #define pll_override_writel(val, offset, p) writel(val, p->pmc + offset) #define pll_writel_sdm_din(val, p) pll_writel(val, p->params->sdm_din_reg, p) #define pll_writel_sdm_ctrl(val, p) pll_writel(val, p->params->sdm_ctrl_reg, p) #define mask(w) ((1 << (w)) - 1) #define divm_mask(p) mask(p->params->div_nmp->divm_width) #define divn_mask(p) mask(p->params->div_nmp->divn_width) #define divp_mask(p) (p->params->flags & TEGRA_PLLU ? PLLU_POST_DIVP_MASK :\ mask(p->params->div_nmp->divp_width)) #define sdm_din_mask(p) p->params->sdm_din_mask #define sdm_en_mask(p) p->params->sdm_ctrl_en_mask #define divm_shift(p) (p)->params->div_nmp->divm_shift #define divn_shift(p) (p)->params->div_nmp->divn_shift #define divp_shift(p) (p)->params->div_nmp->divp_shift #define divm_mask_shifted(p) (divm_mask(p) << divm_shift(p)) #define divn_mask_shifted(p) (divn_mask(p) << divn_shift(p)) #define divp_mask_shifted(p) (divp_mask(p) << divp_shift(p)) #define divm_max(p) (divm_mask(p)) #define divn_max(p) (divn_mask(p)) #define divp_max(p) (1 << (divp_mask(p))) #define sdin_din_to_data(din) ((u16)((din) ? : 0xFFFFU)) #define sdin_data_to_din(dat) (((dat) == 0xFFFFU) ? 0 : (s16)dat) static struct div_nmp default_nmp = { .divn_shift = PLL_BASE_DIVN_SHIFT, .divn_width = PLL_BASE_DIVN_WIDTH, .divm_shift = PLL_BASE_DIVM_SHIFT, .divm_width = PLL_BASE_DIVM_WIDTH, .divp_shift = PLL_BASE_DIVP_SHIFT, .divp_width = PLL_BASE_DIVP_WIDTH, }; static void clk_pll_enable_lock(struct tegra_clk_pll *pll) { u32 val; if (!(pll->params->flags & TEGRA_PLL_USE_LOCK)) return; if (!(pll->params->flags & TEGRA_PLL_HAS_LOCK_ENABLE)) return; val = pll_readl_misc(pll); val |= BIT(pll->params->lock_enable_bit_idx); pll_writel_misc(val, pll); } static int clk_pll_wait_for_lock(struct tegra_clk_pll *pll) { int i; u32 val, lock_mask; void __iomem *lock_addr; if (!(pll->params->flags & TEGRA_PLL_USE_LOCK)) { udelay(pll->params->lock_delay); return 0; } lock_addr = pll->clk_base; if (pll->params->flags & TEGRA_PLL_LOCK_MISC) lock_addr += pll->params->misc_reg; else lock_addr += pll->params->base_reg; lock_mask = pll->params->lock_mask; for (i = 0; i < pll->params->lock_delay; i++) { val = readl_relaxed(lock_addr); if ((val & lock_mask) == lock_mask) { udelay(PLL_POST_LOCK_DELAY); return 0; } udelay(2); /* timeout = 2 * lock time */ } pr_err("%s: Timed out waiting for pll %s lock\n", __func__, clk_hw_get_name(&pll->hw)); return -1; } int tegra_pll_wait_for_lock(struct tegra_clk_pll *pll) { return clk_pll_wait_for_lock(pll); } static bool pllm_clk_is_gated_by_pmc(struct tegra_clk_pll *pll) { u32 val = readl_relaxed(pll->pmc + PMC_PLLP_WB0_OVERRIDE); return (val & PMC_PLLP_WB0_OVERRIDE_PLLM_OVERRIDE) && !(val & PMC_PLLP_WB0_OVERRIDE_PLLM_ENABLE); } static int clk_pll_is_enabled(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); u32 val; /* * Power Management Controller (PMC) can override the PLLM clock * settings, including the enable-state. The PLLM is enabled when * PLLM's CaR state is ON and when PLLM isn't gated by PMC. */ if ((pll->params->flags & TEGRA_PLLM) && pllm_clk_is_gated_by_pmc(pll)) return 0; val = pll_readl_base(pll); return val & PLL_BASE_ENABLE ? 1 : 0; } static void _clk_pll_enable(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); u32 val; if (pll->params->iddq_reg) { val = pll_readl(pll->params->iddq_reg, pll); val &= ~BIT(pll->params->iddq_bit_idx); pll_writel(val, pll->params->iddq_reg, pll); udelay(5); } if (pll->params->reset_reg) { val = pll_readl(pll->params->reset_reg, pll); val &= ~BIT(pll->params->reset_bit_idx); pll_writel(val, pll->params->reset_reg, pll); } clk_pll_enable_lock(pll); val = pll_readl_base(pll); if (pll->params->flags & TEGRA_PLL_BYPASS) val &= ~PLL_BASE_BYPASS; val |= PLL_BASE_ENABLE; pll_writel_base(val, pll); if (pll->params->flags & TEGRA_PLLM) { val = readl_relaxed(pll->pmc + PMC_PLLP_WB0_OVERRIDE); val |= PMC_PLLP_WB0_OVERRIDE_PLLM_ENABLE; writel_relaxed(val, pll->pmc + PMC_PLLP_WB0_OVERRIDE); } } static void _clk_pll_disable(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); u32 val; val = pll_readl_base(pll); if (pll->params->flags & TEGRA_PLL_BYPASS) val &= ~PLL_BASE_BYPASS; val &= ~PLL_BASE_ENABLE; pll_writel_base(val, pll); if (pll->params->flags & TEGRA_PLLM) { val = readl_relaxed(pll->pmc + PMC_PLLP_WB0_OVERRIDE); val &= ~PMC_PLLP_WB0_OVERRIDE_PLLM_ENABLE; writel_relaxed(val, pll->pmc + PMC_PLLP_WB0_OVERRIDE); } if (pll->params->reset_reg) { val = pll_readl(pll->params->reset_reg, pll); val |= BIT(pll->params->reset_bit_idx); pll_writel(val, pll->params->reset_reg, pll); } if (pll->params->iddq_reg) { val = pll_readl(pll->params->iddq_reg, pll); val |= BIT(pll->params->iddq_bit_idx); pll_writel(val, pll->params->iddq_reg, pll); udelay(2); } } static void pll_clk_start_ss(struct tegra_clk_pll *pll) { if (pll->params->defaults_set && pll->params->ssc_ctrl_reg) { u32 val = pll_readl(pll->params->ssc_ctrl_reg, pll); val |= pll->params->ssc_ctrl_en_mask; pll_writel(val, pll->params->ssc_ctrl_reg, pll); } } static void pll_clk_stop_ss(struct tegra_clk_pll *pll) { if (pll->params->defaults_set && pll->params->ssc_ctrl_reg) { u32 val = pll_readl(pll->params->ssc_ctrl_reg, pll); val &= ~pll->params->ssc_ctrl_en_mask; pll_writel(val, pll->params->ssc_ctrl_reg, pll); } } static int clk_pll_enable(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); unsigned long flags = 0; int ret; if (clk_pll_is_enabled(hw)) return 0; if (pll->lock) spin_lock_irqsave(pll->lock, flags); _clk_pll_enable(hw); ret = clk_pll_wait_for_lock(pll); pll_clk_start_ss(pll); if (pll->lock) spin_unlock_irqrestore(pll->lock, flags); return ret; } static void clk_pll_disable(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); unsigned long flags = 0; if (pll->lock) spin_lock_irqsave(pll->lock, flags); pll_clk_stop_ss(pll); _clk_pll_disable(hw); if (pll->lock) spin_unlock_irqrestore(pll->lock, flags); } static int _p_div_to_hw(struct clk_hw *hw, u8 p_div) { struct tegra_clk_pll *pll = to_clk_pll(hw); const struct pdiv_map *p_tohw = pll->params->pdiv_tohw; if (p_tohw) { while (p_tohw->pdiv) { if (p_div <= p_tohw->pdiv) return p_tohw->hw_val; p_tohw++; } return -EINVAL; } return -EINVAL; } int tegra_pll_p_div_to_hw(struct tegra_clk_pll *pll, u8 p_div) { return _p_div_to_hw(&pll->hw, p_div); } static int _hw_to_p_div(struct clk_hw *hw, u8 p_div_hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); const struct pdiv_map *p_tohw = pll->params->pdiv_tohw; if (p_tohw) { while (p_tohw->pdiv) { if (p_div_hw == p_tohw->hw_val) return p_tohw->pdiv; p_tohw++; } return -EINVAL; } return 1 << p_div_hw; } static int _get_table_rate(struct clk_hw *hw, struct tegra_clk_pll_freq_table *cfg, unsigned long rate, unsigned long parent_rate) { struct tegra_clk_pll *pll = to_clk_pll(hw); struct tegra_clk_pll_freq_table *sel; int p; for (sel = pll->params->freq_table; sel->input_rate != 0; sel++) if (sel->input_rate == parent_rate && sel->output_rate == rate) break; if (sel->input_rate == 0) return -EINVAL; if (pll->params->pdiv_tohw) { p = _p_div_to_hw(hw, sel->p); if (p < 0) return p; } else { p = ilog2(sel->p); } cfg->input_rate = sel->input_rate; cfg->output_rate = sel->output_rate; cfg->m = sel->m; cfg->n = sel->n; cfg->p = p; cfg->cpcon = sel->cpcon; cfg->sdm_data = sel->sdm_data; return 0; } static int _calc_rate(struct clk_hw *hw, struct tegra_clk_pll_freq_table *cfg, unsigned long rate, unsigned long parent_rate) { struct tegra_clk_pll *pll = to_clk_pll(hw); unsigned long cfreq; u32 p_div = 0; int ret; if (!rate) return -EINVAL; switch (parent_rate) { case 12000000: case 26000000: cfreq = (rate <= 1000000 * 1000) ? 1000000 : 2000000; break; case 13000000: cfreq = (rate <= 1000000 * 1000) ? 1000000 : 2600000; break; case 16800000: case 19200000: cfreq = (rate <= 1200000 * 1000) ? 1200000 : 2400000; break; case 9600000: case 28800000: /* * PLL_P_OUT1 rate is not listed in PLLA table */ cfreq = parent_rate / (parent_rate / 1000000); break; default: pr_err("%s Unexpected reference rate %lu\n", __func__, parent_rate); BUG(); } /* Raise VCO to guarantee 0.5% accuracy */ for (cfg->output_rate = rate; cfg->output_rate < 200 * cfreq; cfg->output_rate <<= 1) p_div++; cfg->m = parent_rate / cfreq; cfg->n = cfg->output_rate / cfreq; cfg->cpcon = OUT_OF_TABLE_CPCON; if (cfg->m == 0 || cfg->m > divm_max(pll) || cfg->n > divn_max(pll) || (1 << p_div) > divp_max(pll) || cfg->output_rate > pll->params->vco_max) { return -EINVAL; } cfg->output_rate = cfg->n * DIV_ROUND_UP(parent_rate, cfg->m); cfg->output_rate >>= p_div; if (pll->params->pdiv_tohw) { ret = _p_div_to_hw(hw, 1 << p_div); if (ret < 0) return ret; else cfg->p = ret; } else cfg->p = p_div; return 0; } /* * SDM (Sigma Delta Modulator) divisor is 16-bit 2's complement signed number * within (-2^12 ... 2^12-1) range. Represented in PLL data structure as * unsigned 16-bit value, with "0" divisor mapped to 0xFFFF. Data "0" is used * to indicate that SDM is disabled. * * Effective ndiv value when SDM is enabled: ndiv + 1/2 + sdm_din/2^13 */ static void clk_pll_set_sdm_data(struct clk_hw *hw, struct tegra_clk_pll_freq_table *cfg) { struct tegra_clk_pll *pll = to_clk_pll(hw); u32 val; bool enabled; if (!pll->params->sdm_din_reg) return; if (cfg->sdm_data) { val = pll_readl_sdm_din(pll) & (~sdm_din_mask(pll)); val |= sdin_data_to_din(cfg->sdm_data) & sdm_din_mask(pll); pll_writel_sdm_din(val, pll); } val = pll_readl_sdm_ctrl(pll); enabled = (val & sdm_en_mask(pll)); if (cfg->sdm_data == 0 && enabled) val &= ~pll->params->sdm_ctrl_en_mask; if (cfg->sdm_data != 0 && !enabled) val |= pll->params->sdm_ctrl_en_mask; pll_writel_sdm_ctrl(val, pll); } static void _update_pll_mnp(struct tegra_clk_pll *pll, struct tegra_clk_pll_freq_table *cfg) { u32 val; struct tegra_clk_pll_params *params = pll->params; struct div_nmp *div_nmp = params->div_nmp; if ((params->flags & (TEGRA_PLLM | TEGRA_PLLMB)) && (pll_override_readl(PMC_PLLP_WB0_OVERRIDE, pll) & PMC_PLLP_WB0_OVERRIDE_PLLM_OVERRIDE)) { val = pll_override_readl(params->pmc_divp_reg, pll); val &= ~(divp_mask(pll) << div_nmp->override_divp_shift); val |= cfg->p << div_nmp->override_divp_shift; pll_override_writel(val, params->pmc_divp_reg, pll); val = pll_override_readl(params->pmc_divnm_reg, pll); val &= ~((divm_mask(pll) << div_nmp->override_divm_shift) | (divn_mask(pll) << div_nmp->override_divn_shift)); val |= (cfg->m << div_nmp->override_divm_shift) | (cfg->n << div_nmp->override_divn_shift); pll_override_writel(val, params->pmc_divnm_reg, pll); } else { val = pll_readl_base(pll); val &= ~(divm_mask_shifted(pll) | divn_mask_shifted(pll) | divp_mask_shifted(pll)); val |= (cfg->m << divm_shift(pll)) | (cfg->n << divn_shift(pll)) | (cfg->p << divp_shift(pll)); pll_writel_base(val, pll); clk_pll_set_sdm_data(&pll->hw, cfg); } } static void _get_pll_mnp(struct tegra_clk_pll *pll, struct tegra_clk_pll_freq_table *cfg) { u32 val; struct tegra_clk_pll_params *params = pll->params; struct div_nmp *div_nmp = params->div_nmp; *cfg = (struct tegra_clk_pll_freq_table) { }; if ((params->flags & (TEGRA_PLLM | TEGRA_PLLMB)) && (pll_override_readl(PMC_PLLP_WB0_OVERRIDE, pll) & PMC_PLLP_WB0_OVERRIDE_PLLM_OVERRIDE)) { val = pll_override_readl(params->pmc_divp_reg, pll); cfg->p = (val >> div_nmp->override_divp_shift) & divp_mask(pll); val = pll_override_readl(params->pmc_divnm_reg, pll); cfg->m = (val >> div_nmp->override_divm_shift) & divm_mask(pll); cfg->n = (val >> div_nmp->override_divn_shift) & divn_mask(pll); } else { val = pll_readl_base(pll); cfg->m = (val >> div_nmp->divm_shift) & divm_mask(pll); cfg->n = (val >> div_nmp->divn_shift) & divn_mask(pll); cfg->p = (val >> div_nmp->divp_shift) & divp_mask(pll); if (pll->params->sdm_din_reg) { if (sdm_en_mask(pll) & pll_readl_sdm_ctrl(pll)) { val = pll_readl_sdm_din(pll); val &= sdm_din_mask(pll); cfg->sdm_data = sdin_din_to_data(val); } } } } static void _update_pll_cpcon(struct tegra_clk_pll *pll, struct tegra_clk_pll_freq_table *cfg, unsigned long rate) { u32 val; val = pll_readl_misc(pll); val &= ~(PLL_MISC_CPCON_MASK << PLL_MISC_CPCON_SHIFT); val |= cfg->cpcon << PLL_MISC_CPCON_SHIFT; if (pll->params->flags & TEGRA_PLL_SET_LFCON) { val &= ~(PLL_MISC_LFCON_MASK << PLL_MISC_LFCON_SHIFT); if (cfg->n >= PLLDU_LFCON_SET_DIVN) val |= 1 << PLL_MISC_LFCON_SHIFT; } else if (pll->params->flags & TEGRA_PLL_SET_DCCON) { val &= ~(1 << PLL_MISC_DCCON_SHIFT); if (rate >= (pll->params->vco_max >> 1)) val |= 1 << PLL_MISC_DCCON_SHIFT; } pll_writel_misc(val, pll); } static int _program_pll(struct clk_hw *hw, struct tegra_clk_pll_freq_table *cfg, unsigned long rate) { struct tegra_clk_pll *pll = to_clk_pll(hw); struct tegra_clk_pll_freq_table old_cfg; int state, ret = 0; state = clk_pll_is_enabled(hw); if (state && pll->params->pre_rate_change) { ret = pll->params->pre_rate_change(); if (WARN_ON(ret)) return ret; } _get_pll_mnp(pll, &old_cfg); if (state && pll->params->defaults_set && pll->params->dyn_ramp && (cfg->m == old_cfg.m) && (cfg->p == old_cfg.p)) { ret = pll->params->dyn_ramp(pll, cfg); if (!ret) goto done; } if (state) { pll_clk_stop_ss(pll); _clk_pll_disable(hw); } if (!pll->params->defaults_set && pll->params->set_defaults) pll->params->set_defaults(pll); _update_pll_mnp(pll, cfg); if (pll->params->flags & TEGRA_PLL_HAS_CPCON) _update_pll_cpcon(pll, cfg, rate); if (state) { _clk_pll_enable(hw); ret = clk_pll_wait_for_lock(pll); pll_clk_start_ss(pll); } done: if (state && pll->params->post_rate_change) pll->params->post_rate_change(); return ret; } static int clk_pll_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { struct tegra_clk_pll *pll = to_clk_pll(hw); struct tegra_clk_pll_freq_table cfg, old_cfg; unsigned long flags = 0; int ret = 0; if (pll->params->flags & TEGRA_PLL_FIXED) { if (rate != pll->params->fixed_rate) { pr_err("%s: Can not change %s fixed rate %lu to %lu\n", __func__, clk_hw_get_name(hw), pll->params->fixed_rate, rate); return -EINVAL; } return 0; } if (_get_table_rate(hw, &cfg, rate, parent_rate) && pll->params->calc_rate(hw, &cfg, rate, parent_rate)) { pr_err("%s: Failed to set %s rate %lu\n", __func__, clk_hw_get_name(hw), rate); WARN_ON(1); return -EINVAL; } if (pll->lock) spin_lock_irqsave(pll->lock, flags); _get_pll_mnp(pll, &old_cfg); if (pll->params->flags & TEGRA_PLL_VCO_OUT) cfg.p = old_cfg.p; if (old_cfg.m != cfg.m || old_cfg.n != cfg.n || old_cfg.p != cfg.p || old_cfg.sdm_data != cfg.sdm_data) ret = _program_pll(hw, &cfg, rate); if (pll->lock) spin_unlock_irqrestore(pll->lock, flags); return ret; } static long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate, unsigned long *prate) { struct tegra_clk_pll *pll = to_clk_pll(hw); struct tegra_clk_pll_freq_table cfg; if (pll->params->flags & TEGRA_PLL_FIXED) { /* PLLM/MB are used for memory; we do not change rate */ if (pll->params->flags & (TEGRA_PLLM | TEGRA_PLLMB)) return clk_hw_get_rate(hw); return pll->params->fixed_rate; } if (_get_table_rate(hw, &cfg, rate, *prate) && pll->params->calc_rate(hw, &cfg, rate, *prate)) return -EINVAL; return cfg.output_rate; } static unsigned long clk_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { struct tegra_clk_pll *pll = to_clk_pll(hw); struct tegra_clk_pll_freq_table cfg; u32 val; u64 rate = parent_rate; int pdiv; val = pll_readl_base(pll); if ((pll->params->flags & TEGRA_PLL_BYPASS) && (val & PLL_BASE_BYPASS)) return parent_rate; if ((pll->params->flags & TEGRA_PLL_FIXED) && !(pll->params->flags & (TEGRA_PLLM | TEGRA_PLLMB)) && !(val & PLL_BASE_OVERRIDE)) { struct tegra_clk_pll_freq_table sel; if (_get_table_rate(hw, &sel, pll->params->fixed_rate, parent_rate)) { pr_err("Clock %s has unknown fixed frequency\n", clk_hw_get_name(hw)); BUG(); } return pll->params->fixed_rate; } _get_pll_mnp(pll, &cfg); if (pll->params->flags & TEGRA_PLL_VCO_OUT) { pdiv = 1; } else { pdiv = _hw_to_p_div(hw, cfg.p); if (pdiv < 0) { WARN(1, "Clock %s has invalid pdiv value : 0x%x\n", clk_hw_get_name(hw), cfg.p); pdiv = 1; } } if (pll->params->set_gain) pll->params->set_gain(&cfg); cfg.m *= pdiv; rate *= cfg.n; do_div(rate, cfg.m); return rate; } static int clk_plle_training(struct tegra_clk_pll *pll) { u32 val; unsigned long timeout; if (!pll->pmc) return -ENOSYS; /* * PLLE is already disabled, and setup cleared; * create falling edge on PLLE IDDQ input. */ val = readl(pll->pmc + PMC_SATA_PWRGT); val |= PMC_SATA_PWRGT_PLLE_IDDQ_VALUE; writel(val, pll->pmc + PMC_SATA_PWRGT); val = readl(pll->pmc + PMC_SATA_PWRGT); val |= PMC_SATA_PWRGT_PLLE_IDDQ_SWCTL; writel(val, pll->pmc + PMC_SATA_PWRGT); val = readl(pll->pmc + PMC_SATA_PWRGT); val &= ~PMC_SATA_PWRGT_PLLE_IDDQ_VALUE; writel(val, pll->pmc + PMC_SATA_PWRGT); val = pll_readl_misc(pll); timeout = jiffies + msecs_to_jiffies(100); while (1) { val = pll_readl_misc(pll); if (val & PLLE_MISC_READY) break; if (time_after(jiffies, timeout)) { pr_err("%s: timeout waiting for PLLE\n", __func__); return -EBUSY; } udelay(300); } return 0; } static int clk_plle_enable(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); struct tegra_clk_pll_freq_table sel; unsigned long input_rate; u32 val; int err; if (clk_pll_is_enabled(hw)) return 0; input_rate = clk_hw_get_rate(clk_hw_get_parent(hw)); if (_get_table_rate(hw, &sel, pll->params->fixed_rate, input_rate)) return -EINVAL; clk_pll_disable(hw); val = pll_readl_misc(pll); val &= ~(PLLE_MISC_LOCK_ENABLE | PLLE_MISC_SETUP_MASK); pll_writel_misc(val, pll); val = pll_readl_misc(pll); if (!(val & PLLE_MISC_READY)) { err = clk_plle_training(pll); if (err) return err; } if (pll->params->flags & TEGRA_PLLE_CONFIGURE) { /* configure dividers */ val = pll_readl_base(pll); val &= ~(divp_mask_shifted(pll) | divn_mask_shifted(pll) | divm_mask_shifted(pll)); val &= ~(PLLE_BASE_DIVCML_MASK << PLLE_BASE_DIVCML_SHIFT); val |= sel.m << divm_shift(pll); val |= sel.n << divn_shift(pll); val |= sel.p << divp_shift(pll); val |= sel.cpcon << PLLE_BASE_DIVCML_SHIFT; pll_writel_base(val, pll); } val = pll_readl_misc(pll); val |= PLLE_MISC_SETUP_VALUE; val |= PLLE_MISC_LOCK_ENABLE; pll_writel_misc(val, pll); val = readl(pll->clk_base + PLLE_SS_CTRL); val &= ~PLLE_SS_COEFFICIENTS_MASK; val |= PLLE_SS_DISABLE; writel(val, pll->clk_base + PLLE_SS_CTRL); val = pll_readl_base(pll); val |= (PLL_BASE_BYPASS | PLL_BASE_ENABLE); pll_writel_base(val, pll); clk_pll_wait_for_lock(pll); return 0; } static unsigned long clk_plle_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { struct tegra_clk_pll *pll = to_clk_pll(hw); u32 val = pll_readl_base(pll); u32 divn = 0, divm = 0, divp = 0; u64 rate = parent_rate; divp = (val >> pll->params->div_nmp->divp_shift) & (divp_mask(pll)); divn = (val >> pll->params->div_nmp->divn_shift) & (divn_mask(pll)); divm = (val >> pll->params->div_nmp->divm_shift) & (divm_mask(pll)); divm *= divp; rate *= divn; do_div(rate, divm); return rate; } static void tegra_clk_pll_restore_context(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); struct clk_hw *parent = clk_hw_get_parent(hw); unsigned long parent_rate = clk_hw_get_rate(parent); unsigned long rate = clk_hw_get_rate(hw); if (clk_pll_is_enabled(hw)) return; if (pll->params->set_defaults) pll->params->set_defaults(pll); clk_pll_set_rate(hw, rate, parent_rate); if (!__clk_get_enable_count(hw->clk)) clk_pll_disable(hw); else clk_pll_enable(hw); } const struct clk_ops tegra_clk_pll_ops = { .is_enabled = clk_pll_is_enabled, .enable = clk_pll_enable, .disable = clk_pll_disable, .recalc_rate = clk_pll_recalc_rate, .round_rate = clk_pll_round_rate, .set_rate = clk_pll_set_rate, .restore_context = tegra_clk_pll_restore_context, }; const struct clk_ops tegra_clk_plle_ops = { .recalc_rate = clk_plle_recalc_rate, .is_enabled = clk_pll_is_enabled, .disable = clk_pll_disable, .enable = clk_plle_enable, }; /* * Structure defining the fields for USB UTMI clocks Parameters. */ struct utmi_clk_param { /* Oscillator Frequency in Hz */ u32 osc_frequency; /* UTMIP PLL Enable Delay Count */ u8 enable_delay_count; /* UTMIP PLL Stable count */ u8 stable_count; /* UTMIP PLL Active delay count */ u8 active_delay_count; /* UTMIP PLL Xtal frequency count */ u8 xtal_freq_count; }; static const struct utmi_clk_param utmi_parameters[] = { { .osc_frequency = 13000000, .enable_delay_count = 0x02, .stable_count = 0x33, .active_delay_count = 0x05, .xtal_freq_count = 0x7f }, { .osc_frequency = 19200000, .enable_delay_count = 0x03, .stable_count = 0x4b, .active_delay_count = 0x06, .xtal_freq_count = 0xbb }, { .osc_frequency = 12000000, .enable_delay_count = 0x02, .stable_count = 0x2f, .active_delay_count = 0x04, .xtal_freq_count = 0x76 }, { .osc_frequency = 26000000, .enable_delay_count = 0x04, .stable_count = 0x66, .active_delay_count = 0x09, .xtal_freq_count = 0xfe }, { .osc_frequency = 16800000, .enable_delay_count = 0x03, .stable_count = 0x41, .active_delay_count = 0x0a, .xtal_freq_count = 0xa4 }, { .osc_frequency = 38400000, .enable_delay_count = 0x0, .stable_count = 0x0, .active_delay_count = 0x6, .xtal_freq_count = 0x80 }, }; static int clk_pllu_enable(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); struct clk_hw *pll_ref = clk_hw_get_parent(hw); struct clk_hw *osc = clk_hw_get_parent(pll_ref); const struct utmi_clk_param *params = NULL; unsigned long flags = 0, input_rate; unsigned int i; int ret = 0; u32 value; if (!osc) { pr_err("%s: failed to get OSC clock\n", __func__); return -EINVAL; } input_rate = clk_hw_get_rate(osc); if (pll->lock) spin_lock_irqsave(pll->lock, flags); if (!clk_pll_is_enabled(hw)) _clk_pll_enable(hw); ret = clk_pll_wait_for_lock(pll); if (ret < 0) goto out; for (i = 0; i < ARRAY_SIZE(utmi_parameters); i++) { if (input_rate == utmi_parameters[i].osc_frequency) { params = &utmi_parameters[i]; break; } } if (!params) { pr_err("%s: unexpected input rate %lu Hz\n", __func__, input_rate); ret = -EINVAL; goto out; } value = pll_readl_base(pll); value &= ~PLLU_BASE_OVERRIDE; pll_writel_base(value, pll); value = readl_relaxed(pll->clk_base + UTMIP_PLL_CFG2); /* Program UTMIP PLL stable and active counts */ value &= ~UTMIP_PLL_CFG2_STABLE_COUNT(~0); value |= UTMIP_PLL_CFG2_STABLE_COUNT(params->stable_count); value &= ~UTMIP_PLL_CFG2_ACTIVE_DLY_COUNT(~0); value |= UTMIP_PLL_CFG2_ACTIVE_DLY_COUNT(params->active_delay_count); /* Remove power downs from UTMIP PLL control bits */ value &= ~UTMIP_PLL_CFG2_FORCE_PD_SAMP_A_POWERDOWN; value &= ~UTMIP_PLL_CFG2_FORCE_PD_SAMP_B_POWERDOWN; value &= ~UTMIP_PLL_CFG2_FORCE_PD_SAMP_C_POWERDOWN; writel_relaxed(value, pll->clk_base + UTMIP_PLL_CFG2); value = readl_relaxed(pll->clk_base + UTMIP_PLL_CFG1); /* Program UTMIP PLL delay and oscillator frequency counts */ value &= ~UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(~0); value |= UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(params->enable_delay_count); value &= ~UTMIP_PLL_CFG1_XTAL_FREQ_COUNT(~0); value |= UTMIP_PLL_CFG1_XTAL_FREQ_COUNT(params->xtal_freq_count); /* Remove power downs from UTMIP PLL control bits */ value &= ~UTMIP_PLL_CFG1_FORCE_PLL_ENABLE_POWERDOWN; value &= ~UTMIP_PLL_CFG1_FORCE_PLL_ACTIVE_POWERDOWN; value &= ~UTMIP_PLL_CFG1_FORCE_PLLU_POWERDOWN; writel_relaxed(value, pll->clk_base + UTMIP_PLL_CFG1); out: if (pll->lock) spin_unlock_irqrestore(pll->lock, flags); return ret; } static const struct clk_ops tegra_clk_pllu_ops = { .is_enabled = clk_pll_is_enabled, .enable = clk_pllu_enable, .disable = clk_pll_disable, .recalc_rate = clk_pll_recalc_rate, .round_rate = clk_pll_round_rate, .set_rate = clk_pll_set_rate, }; static int _pll_fixed_mdiv(struct tegra_clk_pll_params *pll_params, unsigned long parent_rate) { u16 mdiv = parent_rate / pll_params->cf_min; if (pll_params->flags & TEGRA_MDIV_NEW) return (!pll_params->mdiv_default ? mdiv : min(mdiv, pll_params->mdiv_default)); if (pll_params->mdiv_default) return pll_params->mdiv_default; if (parent_rate > pll_params->cf_max) return 2; else return 1; } static int _calc_dynamic_ramp_rate(struct clk_hw *hw, struct tegra_clk_pll_freq_table *cfg, unsigned long rate, unsigned long parent_rate) { struct tegra_clk_pll *pll = to_clk_pll(hw); unsigned int p; int p_div; if (!rate) return -EINVAL; p = DIV_ROUND_UP(pll->params->vco_min, rate); cfg->m = _pll_fixed_mdiv(pll->params, parent_rate); cfg->output_rate = rate * p; cfg->n = cfg->output_rate * cfg->m / parent_rate; cfg->input_rate = parent_rate; p_div = _p_div_to_hw(hw, p); if (p_div < 0) return p_div; cfg->p = p_div; if (cfg->n > divn_max(pll) || cfg->output_rate > pll->params->vco_max) return -EINVAL; return 0; } #if defined(CONFIG_ARCH_TEGRA_114_SOC) || \ defined(CONFIG_ARCH_TEGRA_124_SOC) || \ defined(CONFIG_ARCH_TEGRA_132_SOC) || \ defined(CONFIG_ARCH_TEGRA_210_SOC) u16 tegra_pll_get_fixed_mdiv(struct clk_hw *hw, unsigned long input_rate) { struct tegra_clk_pll *pll = to_clk_pll(hw); return (u16)_pll_fixed_mdiv(pll->params, input_rate); } static unsigned long _clip_vco_min(unsigned long vco_min, unsigned long parent_rate) { return DIV_ROUND_UP(vco_min, parent_rate) * parent_rate; } static int _setup_dynamic_ramp(struct tegra_clk_pll_params *pll_params, void __iomem *clk_base, unsigned long parent_rate) { u32 val; u32 step_a, step_b; switch (parent_rate) { case 12000000: case 13000000: case 26000000: step_a = 0x2B; step_b = 0x0B; break; case 16800000: step_a = 0x1A; step_b = 0x09; break; case 19200000: step_a = 0x12; step_b = 0x08; break; default: pr_err("%s: Unexpected reference rate %lu\n", __func__, parent_rate); WARN_ON(1); return -EINVAL; } val = step_a << pll_params->stepa_shift; val |= step_b << pll_params->stepb_shift; writel_relaxed(val, clk_base + pll_params->dyn_ramp_reg); return 0; } static int _pll_ramp_calc_pll(struct clk_hw *hw, struct tegra_clk_pll_freq_table *cfg, unsigned long rate, unsigned long parent_rate) { struct tegra_clk_pll *pll = to_clk_pll(hw); int err = 0; err = _get_table_rate(hw, cfg, rate, parent_rate); if (err < 0) err = _calc_dynamic_ramp_rate(hw, cfg, rate, parent_rate); else { if (cfg->m != _pll_fixed_mdiv(pll->params, parent_rate)) { WARN_ON(1); err = -EINVAL; goto out; } } if (cfg->p > pll->params->max_p) err = -EINVAL; out: return err; } static int clk_pllxc_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { struct tegra_clk_pll *pll = to_clk_pll(hw); struct tegra_clk_pll_freq_table cfg, old_cfg; unsigned long flags = 0; int ret; ret = _pll_ramp_calc_pll(hw, &cfg, rate, parent_rate); if (ret < 0) return ret; if (pll->lock) spin_lock_irqsave(pll->lock, flags); _get_pll_mnp(pll, &old_cfg); if (pll->params->flags & TEGRA_PLL_VCO_OUT) cfg.p = old_cfg.p; if (old_cfg.m != cfg.m || old_cfg.n != cfg.n || old_cfg.p != cfg.p) ret = _program_pll(hw, &cfg, rate); if (pll->lock) spin_unlock_irqrestore(pll->lock, flags); return ret; } static long clk_pll_ramp_round_rate(struct clk_hw *hw, unsigned long rate, unsigned long *prate) { struct tegra_clk_pll *pll = to_clk_pll(hw); struct tegra_clk_pll_freq_table cfg; int ret, p_div; u64 output_rate = *prate; ret = _pll_ramp_calc_pll(hw, &cfg, rate, *prate); if (ret < 0) return ret; p_div = _hw_to_p_div(hw, cfg.p); if (p_div < 0) return p_div; if (pll->params->set_gain) pll->params->set_gain(&cfg); output_rate *= cfg.n; do_div(output_rate, cfg.m * p_div); return output_rate; } static void _pllcx_strobe(struct tegra_clk_pll *pll) { u32 val; val = pll_readl_misc(pll); val |= PLLCX_MISC_STROBE; pll_writel_misc(val, pll); udelay(2); val &= ~PLLCX_MISC_STROBE; pll_writel_misc(val, pll); } static int clk_pllc_enable(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); u32 val; int ret; unsigned long flags = 0; if (clk_pll_is_enabled(hw)) return 0; if (pll->lock) spin_lock_irqsave(pll->lock, flags); _clk_pll_enable(hw); udelay(2); val = pll_readl_misc(pll); val &= ~PLLCX_MISC_RESET; pll_writel_misc(val, pll); udelay(2); _pllcx_strobe(pll); ret = clk_pll_wait_for_lock(pll); if (pll->lock) spin_unlock_irqrestore(pll->lock, flags); return ret; } static void _clk_pllc_disable(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); u32 val; _clk_pll_disable(hw); val = pll_readl_misc(pll); val |= PLLCX_MISC_RESET; pll_writel_misc(val, pll); udelay(2); } static void clk_pllc_disable(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); unsigned long flags = 0; if (pll->lock) spin_lock_irqsave(pll->lock, flags); _clk_pllc_disable(hw); if (pll->lock) spin_unlock_irqrestore(pll->lock, flags); } static int _pllcx_update_dynamic_coef(struct tegra_clk_pll *pll, unsigned long input_rate, u32 n) { u32 val, n_threshold; switch (input_rate) { case 12000000: n_threshold = 70; break; case 13000000: case 26000000: n_threshold = 71; break; case 16800000: n_threshold = 55; break; case 19200000: n_threshold = 48; break; default: pr_err("%s: Unexpected reference rate %lu\n", __func__, input_rate); return -EINVAL; } val = pll_readl_misc(pll); val &= ~(PLLCX_MISC_SDM_DIV_MASK | PLLCX_MISC_FILT_DIV_MASK); val |= n <= n_threshold ? PLLCX_MISC_DIV_LOW_RANGE : PLLCX_MISC_DIV_HIGH_RANGE; pll_writel_misc(val, pll); return 0; } static int clk_pllc_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { struct tegra_clk_pll_freq_table cfg, old_cfg; struct tegra_clk_pll *pll = to_clk_pll(hw); unsigned long flags = 0; int state, ret = 0; if (pll->lock) spin_lock_irqsave(pll->lock, flags); ret = _pll_ramp_calc_pll(hw, &cfg, rate, parent_rate); if (ret < 0) goto out; _get_pll_mnp(pll, &old_cfg); if (cfg.m != old_cfg.m) { WARN_ON(1); goto out; } if (old_cfg.n == cfg.n && old_cfg.p == cfg.p) goto out; state = clk_pll_is_enabled(hw); if (state) _clk_pllc_disable(hw); ret = _pllcx_update_dynamic_coef(pll, parent_rate, cfg.n); if (ret < 0) goto out; _update_pll_mnp(pll, &cfg); if (state) ret = clk_pllc_enable(hw); out: if (pll->lock) spin_unlock_irqrestore(pll->lock, flags); return ret; } static long _pllre_calc_rate(struct tegra_clk_pll *pll, struct tegra_clk_pll_freq_table *cfg, unsigned long rate, unsigned long parent_rate) { u16 m, n; u64 output_rate = parent_rate; m = _pll_fixed_mdiv(pll->params, parent_rate); n = rate * m / parent_rate; output_rate *= n; do_div(output_rate, m); if (cfg) { cfg->m = m; cfg->n = n; } return output_rate; } static int clk_pllre_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { struct tegra_clk_pll_freq_table cfg, old_cfg; struct tegra_clk_pll *pll = to_clk_pll(hw); unsigned long flags = 0; int state, ret = 0; if (pll->lock) spin_lock_irqsave(pll->lock, flags); _pllre_calc_rate(pll, &cfg, rate, parent_rate); _get_pll_mnp(pll, &old_cfg); cfg.p = old_cfg.p; if (cfg.m != old_cfg.m || cfg.n != old_cfg.n) { state = clk_pll_is_enabled(hw); if (state) _clk_pll_disable(hw); _update_pll_mnp(pll, &cfg); if (state) { _clk_pll_enable(hw); ret = clk_pll_wait_for_lock(pll); } } if (pll->lock) spin_unlock_irqrestore(pll->lock, flags); return ret; } static unsigned long clk_pllre_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { struct tegra_clk_pll_freq_table cfg; struct tegra_clk_pll *pll = to_clk_pll(hw); u64 rate = parent_rate; _get_pll_mnp(pll, &cfg); rate *= cfg.n; do_div(rate, cfg.m); return rate; } static long clk_pllre_round_rate(struct clk_hw *hw, unsigned long rate, unsigned long *prate) { struct tegra_clk_pll *pll = to_clk_pll(hw); return _pllre_calc_rate(pll, NULL, rate, *prate); } static int clk_plle_tegra114_enable(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); struct tegra_clk_pll_freq_table sel; u32 val; int ret; unsigned long flags = 0; unsigned long input_rate; input_rate = clk_hw_get_rate(clk_hw_get_parent(hw)); if (_get_table_rate(hw, &sel, pll->params->fixed_rate, input_rate)) return -EINVAL; if (pll->lock) spin_lock_irqsave(pll->lock, flags); val = pll_readl_base(pll); val &= ~BIT(29); /* Disable lock override */ pll_writel_base(val, pll); val = pll_readl(pll->params->aux_reg, pll); val |= PLLE_AUX_ENABLE_SWCTL; val &= ~PLLE_AUX_SEQ_ENABLE; pll_writel(val, pll->params->aux_reg, pll); udelay(1); val = pll_readl_misc(pll); val |= PLLE_MISC_LOCK_ENABLE; val |= PLLE_MISC_IDDQ_SW_CTRL; val &= ~PLLE_MISC_IDDQ_SW_VALUE; val |= PLLE_MISC_PLLE_PTS; val &= ~(PLLE_MISC_VREG_BG_CTRL_MASK | PLLE_MISC_VREG_CTRL_MASK); pll_writel_misc(val, pll); udelay(5); val = pll_readl(PLLE_SS_CTRL, pll); val |= PLLE_SS_DISABLE; pll_writel(val, PLLE_SS_CTRL, pll); val = pll_readl_base(pll); val &= ~(divp_mask_shifted(pll) | divn_mask_shifted(pll) | divm_mask_shifted(pll)); val &= ~(PLLE_BASE_DIVCML_MASK << PLLE_BASE_DIVCML_SHIFT); val |= sel.m << divm_shift(pll); val |= sel.n << divn_shift(pll); val |= sel.cpcon << PLLE_BASE_DIVCML_SHIFT; pll_writel_base(val, pll); udelay(1); _clk_pll_enable(hw); ret = clk_pll_wait_for_lock(pll); if (ret < 0) goto out; val = pll_readl(PLLE_SS_CTRL, pll); val &= ~(PLLE_SS_CNTL_CENTER | PLLE_SS_CNTL_INVERT); val &= ~PLLE_SS_COEFFICIENTS_MASK; val |= PLLE_SS_COEFFICIENTS_VAL_TEGRA114; pll_writel(val, PLLE_SS_CTRL, pll); val &= ~(PLLE_SS_CNTL_SSC_BYP | PLLE_SS_CNTL_BYPASS_SS); pll_writel(val, PLLE_SS_CTRL, pll); udelay(1); val &= ~PLLE_SS_CNTL_INTERP_RESET; pll_writel(val, PLLE_SS_CTRL, pll); udelay(1); /* Enable HW control of XUSB brick PLL */ val = pll_readl_misc(pll); val &= ~PLLE_MISC_IDDQ_SW_CTRL; pll_writel_misc(val, pll); val = pll_readl(pll->params->aux_reg, pll); val |= (PLLE_AUX_USE_LOCKDET | PLLE_AUX_SEQ_START_STATE); val &= ~(PLLE_AUX_ENABLE_SWCTL | PLLE_AUX_SS_SWCTL); pll_writel(val, pll->params->aux_reg, pll); udelay(1); val |= PLLE_AUX_SEQ_ENABLE; pll_writel(val, pll->params->aux_reg, pll); val = pll_readl(XUSBIO_PLL_CFG0, pll); val |= (XUSBIO_PLL_CFG0_PADPLL_USE_LOCKDET | XUSBIO_PLL_CFG0_SEQ_START_STATE); val &= ~(XUSBIO_PLL_CFG0_CLK_ENABLE_SWCTL | XUSBIO_PLL_CFG0_PADPLL_RESET_SWCTL); pll_writel(val, XUSBIO_PLL_CFG0, pll); udelay(1); val |= XUSBIO_PLL_CFG0_SEQ_ENABLE; pll_writel(val, XUSBIO_PLL_CFG0, pll); /* Enable HW control of SATA PLL */ val = pll_readl(SATA_PLL_CFG0, pll); val &= ~SATA_PLL_CFG0_PADPLL_RESET_SWCTL; val |= SATA_PLL_CFG0_PADPLL_USE_LOCKDET; val |= SATA_PLL_CFG0_SEQ_START_STATE; pll_writel(val, SATA_PLL_CFG0, pll); udelay(1); val = pll_readl(SATA_PLL_CFG0, pll); val |= SATA_PLL_CFG0_SEQ_ENABLE; pll_writel(val, SATA_PLL_CFG0, pll); out: if (pll->lock) spin_unlock_irqrestore(pll->lock, flags); return ret; } static void clk_plle_tegra114_disable(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); unsigned long flags = 0; u32 val; if (pll->lock) spin_lock_irqsave(pll->lock, flags); _clk_pll_disable(hw); val = pll_readl_misc(pll); val |= PLLE_MISC_IDDQ_SW_CTRL | PLLE_MISC_IDDQ_SW_VALUE; pll_writel_misc(val, pll); udelay(1); if (pll->lock) spin_unlock_irqrestore(pll->lock, flags); } static int clk_pllu_tegra114_enable(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); const struct utmi_clk_param *params = NULL; struct clk *osc = __clk_lookup("osc"); unsigned long flags = 0, input_rate; unsigned int i; int ret = 0; u32 value; if (!osc) { pr_err("%s: failed to get OSC clock\n", __func__); return -EINVAL; } input_rate = clk_hw_get_rate(__clk_get_hw(osc)); if (pll->lock) spin_lock_irqsave(pll->lock, flags); if (!clk_pll_is_enabled(hw)) _clk_pll_enable(hw); ret = clk_pll_wait_for_lock(pll); if (ret < 0) goto out; for (i = 0; i < ARRAY_SIZE(utmi_parameters); i++) { if (input_rate == utmi_parameters[i].osc_frequency) { params = &utmi_parameters[i]; break; } } if (!params) { pr_err("%s: unexpected input rate %lu Hz\n", __func__, input_rate); ret = -EINVAL; goto out; } value = pll_readl_base(pll); value &= ~PLLU_BASE_OVERRIDE; pll_writel_base(value, pll); value = readl_relaxed(pll->clk_base + UTMIP_PLL_CFG2); /* Program UTMIP PLL stable and active counts */ value &= ~UTMIP_PLL_CFG2_STABLE_COUNT(~0); value |= UTMIP_PLL_CFG2_STABLE_COUNT(params->stable_count); value &= ~UTMIP_PLL_CFG2_ACTIVE_DLY_COUNT(~0); value |= UTMIP_PLL_CFG2_ACTIVE_DLY_COUNT(params->active_delay_count); /* Remove power downs from UTMIP PLL control bits */ value &= ~UTMIP_PLL_CFG2_FORCE_PD_SAMP_A_POWERDOWN; value &= ~UTMIP_PLL_CFG2_FORCE_PD_SAMP_B_POWERDOWN; value &= ~UTMIP_PLL_CFG2_FORCE_PD_SAMP_C_POWERDOWN; writel_relaxed(value, pll->clk_base + UTMIP_PLL_CFG2); value = readl_relaxed(pll->clk_base + UTMIP_PLL_CFG1); /* Program UTMIP PLL delay and oscillator frequency counts */ value &= ~UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(~0); value |= UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(params->enable_delay_count); value &= ~UTMIP_PLL_CFG1_XTAL_FREQ_COUNT(~0); value |= UTMIP_PLL_CFG1_XTAL_FREQ_COUNT(params->xtal_freq_count); /* Remove power downs from UTMIP PLL control bits */ value &= ~UTMIP_PLL_CFG1_FORCE_PLL_ENABLE_POWERDOWN; value &= ~UTMIP_PLL_CFG1_FORCE_PLL_ACTIVE_POWERDOWN; value &= ~UTMIP_PLL_CFG1_FORCE_PLLU_POWERUP; value &= ~UTMIP_PLL_CFG1_FORCE_PLLU_POWERDOWN; writel_relaxed(value, pll->clk_base + UTMIP_PLL_CFG1); /* Setup HW control of UTMIPLL */ value = readl_relaxed(pll->clk_base + UTMIPLL_HW_PWRDN_CFG0); value |= UTMIPLL_HW_PWRDN_CFG0_USE_LOCKDET; value &= ~UTMIPLL_HW_PWRDN_CFG0_CLK_ENABLE_SWCTL; value |= UTMIPLL_HW_PWRDN_CFG0_SEQ_START_STATE; writel_relaxed(value, pll->clk_base + UTMIPLL_HW_PWRDN_CFG0); value = readl_relaxed(pll->clk_base + UTMIP_PLL_CFG1); value &= ~UTMIP_PLL_CFG1_FORCE_PLL_ENABLE_POWERUP; value &= ~UTMIP_PLL_CFG1_FORCE_PLL_ENABLE_POWERDOWN; writel_relaxed(value, pll->clk_base + UTMIP_PLL_CFG1); udelay(1); /* * Setup SW override of UTMIPLL assuming USB2.0 ports are assigned * to USB2 */ value = readl_relaxed(pll->clk_base + UTMIPLL_HW_PWRDN_CFG0); value |= UTMIPLL_HW_PWRDN_CFG0_IDDQ_SWCTL; value &= ~UTMIPLL_HW_PWRDN_CFG0_IDDQ_OVERRIDE; writel_relaxed(value, pll->clk_base + UTMIPLL_HW_PWRDN_CFG0); udelay(1); /* Enable HW control of UTMIPLL */ value = readl_relaxed(pll->clk_base + UTMIPLL_HW_PWRDN_CFG0); value |= UTMIPLL_HW_PWRDN_CFG0_SEQ_ENABLE; writel_relaxed(value, pll->clk_base + UTMIPLL_HW_PWRDN_CFG0); out: if (pll->lock) spin_unlock_irqrestore(pll->lock, flags); return ret; } static void _clk_plle_tegra_init_parent(struct tegra_clk_pll *pll) { u32 val, val_aux; /* ensure parent is set to pll_ref */ val = pll_readl_base(pll); val_aux = pll_readl(pll->params->aux_reg, pll); if (val & PLL_BASE_ENABLE) { if ((val_aux & PLLE_AUX_PLLRE_SEL) || (val_aux & PLLE_AUX_PLLP_SEL)) WARN(1, "pll_e enabled with unsupported parent %s\n", (val_aux & PLLE_AUX_PLLP_SEL) ? "pllp_out0" : "pll_re_vco"); } else { val_aux &= ~(PLLE_AUX_PLLRE_SEL | PLLE_AUX_PLLP_SEL); pll_writel(val_aux, pll->params->aux_reg, pll); fence_udelay(1, pll->clk_base); } } #endif static struct tegra_clk_pll *_tegra_init_pll(void __iomem *clk_base, void __iomem *pmc, struct tegra_clk_pll_params *pll_params, spinlock_t *lock) { struct tegra_clk_pll *pll; pll = kzalloc(sizeof(*pll), GFP_KERNEL); if (!pll) return ERR_PTR(-ENOMEM); pll->clk_base = clk_base; pll->pmc = pmc; pll->params = pll_params; pll->lock = lock; if (!pll_params->div_nmp) pll_params->div_nmp = &default_nmp; return pll; } static struct clk *_tegra_clk_register_pll(struct tegra_clk_pll *pll, const char *name, const char *parent_name, unsigned long flags, const struct clk_ops *ops) { struct clk_init_data init; init.name = name; init.ops = ops; init.flags = flags; init.parent_names = (parent_name ? &parent_name : NULL); init.num_parents = (parent_name ? 1 : 0); /* Default to _calc_rate if unspecified */ if (!pll->params->calc_rate) { if (pll->params->flags & TEGRA_PLLM) pll->params->calc_rate = _calc_dynamic_ramp_rate; else pll->params->calc_rate = _calc_rate; } if (pll->params->set_defaults) pll->params->set_defaults(pll); /* Data in .init is copied by clk_register(), so stack variable OK */ pll->hw.init = &init; return tegra_clk_dev_register(&pll->hw); } struct clk *tegra_clk_register_pll(const char *name, const char *parent_name, void __iomem *clk_base, void __iomem *pmc, unsigned long flags, struct tegra_clk_pll_params *pll_params, spinlock_t *lock) { struct tegra_clk_pll *pll; struct clk *clk; pll_params->flags |= TEGRA_PLL_BYPASS; pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); if (IS_ERR(pll)) return ERR_CAST(pll); clk = _tegra_clk_register_pll(pll, name, parent_name, flags, &tegra_clk_pll_ops); if (IS_ERR(clk)) kfree(pll); return clk; } static struct div_nmp pll_e_nmp = { .divn_shift = PLLE_BASE_DIVN_SHIFT, .divn_width = PLLE_BASE_DIVN_WIDTH, .divm_shift = PLLE_BASE_DIVM_SHIFT, .divm_width = PLLE_BASE_DIVM_WIDTH, .divp_shift = PLLE_BASE_DIVP_SHIFT, .divp_width = PLLE_BASE_DIVP_WIDTH, }; struct clk *tegra_clk_register_plle(const char *name, const char *parent_name, void __iomem *clk_base, void __iomem *pmc, unsigned long flags, struct tegra_clk_pll_params *pll_params, spinlock_t *lock) { struct tegra_clk_pll *pll; struct clk *clk; pll_params->flags |= TEGRA_PLL_BYPASS; if (!pll_params->div_nmp) pll_params->div_nmp = &pll_e_nmp; pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); if (IS_ERR(pll)) return ERR_CAST(pll); clk = _tegra_clk_register_pll(pll, name, parent_name, flags, &tegra_clk_plle_ops); if (IS_ERR(clk)) kfree(pll); return clk; } struct clk *tegra_clk_register_pllu(const char *name, const char *parent_name, void __iomem *clk_base, unsigned long flags, struct tegra_clk_pll_params *pll_params, spinlock_t *lock) { struct tegra_clk_pll *pll; struct clk *clk; pll_params->flags |= TEGRA_PLLU; pll = _tegra_init_pll(clk_base, NULL, pll_params, lock); if (IS_ERR(pll)) return ERR_CAST(pll); clk = _tegra_clk_register_pll(pll, name, parent_name, flags, &tegra_clk_pllu_ops); if (IS_ERR(clk)) kfree(pll); return clk; } #if defined(CONFIG_ARCH_TEGRA_114_SOC) || \ defined(CONFIG_ARCH_TEGRA_124_SOC) || \ defined(CONFIG_ARCH_TEGRA_132_SOC) || \ defined(CONFIG_ARCH_TEGRA_210_SOC) static const struct clk_ops tegra_clk_pllxc_ops = { .is_enabled = clk_pll_is_enabled, .enable = clk_pll_enable, .disable = clk_pll_disable, .recalc_rate = clk_pll_recalc_rate, .round_rate = clk_pll_ramp_round_rate, .set_rate = clk_pllxc_set_rate, }; static const struct clk_ops tegra_clk_pllc_ops = { .is_enabled = clk_pll_is_enabled, .enable = clk_pllc_enable, .disable = clk_pllc_disable, .recalc_rate = clk_pll_recalc_rate, .round_rate = clk_pll_ramp_round_rate, .set_rate = clk_pllc_set_rate, }; static const struct clk_ops tegra_clk_pllre_ops = { .is_enabled = clk_pll_is_enabled, .enable = clk_pll_enable, .disable = clk_pll_disable, .recalc_rate = clk_pllre_recalc_rate, .round_rate = clk_pllre_round_rate, .set_rate = clk_pllre_set_rate, }; static const struct clk_ops tegra_clk_plle_tegra114_ops = { .is_enabled = clk_pll_is_enabled, .enable = clk_plle_tegra114_enable, .disable = clk_plle_tegra114_disable, .recalc_rate = clk_pll_recalc_rate, }; static const struct clk_ops tegra_clk_pllu_tegra114_ops = { .is_enabled = clk_pll_is_enabled, .enable = clk_pllu_tegra114_enable, .disable = clk_pll_disable, .recalc_rate = clk_pll_recalc_rate, }; struct clk *tegra_clk_register_pllxc(const char *name, const char *parent_name, void __iomem *clk_base, void __iomem *pmc, unsigned long flags, struct tegra_clk_pll_params *pll_params, spinlock_t *lock) { struct tegra_clk_pll *pll; struct clk *clk, *parent; unsigned long parent_rate; u32 val, val_iddq; parent = __clk_lookup(parent_name); if (!parent) { WARN(1, "parent clk %s of %s must be registered first\n", parent_name, name); return ERR_PTR(-EINVAL); } if (!pll_params->pdiv_tohw) return ERR_PTR(-EINVAL); parent_rate = clk_get_rate(parent); pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); if (pll_params->adjust_vco) pll_params->vco_min = pll_params->adjust_vco(pll_params, parent_rate); /* * If the pll has a set_defaults callback, it will take care of * configuring dynamic ramping and setting IDDQ in that path. */ if (!pll_params->set_defaults) { int err; err = _setup_dynamic_ramp(pll_params, clk_base, parent_rate); if (err) return ERR_PTR(err); val = readl_relaxed(clk_base + pll_params->base_reg); val_iddq = readl_relaxed(clk_base + pll_params->iddq_reg); if (val & PLL_BASE_ENABLE) WARN_ON(val_iddq & BIT(pll_params->iddq_bit_idx)); else { val_iddq |= BIT(pll_params->iddq_bit_idx); writel_relaxed(val_iddq, clk_base + pll_params->iddq_reg); } } pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); if (IS_ERR(pll)) return ERR_CAST(pll); clk = _tegra_clk_register_pll(pll, name, parent_name, flags, &tegra_clk_pllxc_ops); if (IS_ERR(clk)) kfree(pll); return clk; } struct clk *tegra_clk_register_pllre(const char *name, const char *parent_name, void __iomem *clk_base, void __iomem *pmc, unsigned long flags, struct tegra_clk_pll_params *pll_params, spinlock_t *lock, unsigned long parent_rate) { u32 val; struct tegra_clk_pll *pll; struct clk *clk; pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); if (pll_params->adjust_vco) pll_params->vco_min = pll_params->adjust_vco(pll_params, parent_rate); pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); if (IS_ERR(pll)) return ERR_CAST(pll); /* program minimum rate by default */ val = pll_readl_base(pll); if (val & PLL_BASE_ENABLE) WARN_ON(readl_relaxed(clk_base + pll_params->iddq_reg) & BIT(pll_params->iddq_bit_idx)); else { int m; m = _pll_fixed_mdiv(pll_params, parent_rate); val = m << divm_shift(pll); val |= (pll_params->vco_min / parent_rate) << divn_shift(pll); pll_writel_base(val, pll); } /* disable lock override */ val = pll_readl_misc(pll); val &= ~BIT(29); pll_writel_misc(val, pll); clk = _tegra_clk_register_pll(pll, name, parent_name, flags, &tegra_clk_pllre_ops); if (IS_ERR(clk)) kfree(pll); return clk; } struct clk *tegra_clk_register_pllm(const char *name, const char *parent_name, void __iomem *clk_base, void __iomem *pmc, unsigned long flags, struct tegra_clk_pll_params *pll_params, spinlock_t *lock) { struct tegra_clk_pll *pll; struct clk *clk, *parent; unsigned long parent_rate; if (!pll_params->pdiv_tohw) return ERR_PTR(-EINVAL); parent = __clk_lookup(parent_name); if (!parent) { WARN(1, "parent clk %s of %s must be registered first\n", parent_name, name); return ERR_PTR(-EINVAL); } parent_rate = clk_get_rate(parent); pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); if (pll_params->adjust_vco) pll_params->vco_min = pll_params->adjust_vco(pll_params, parent_rate); pll_params->flags |= TEGRA_PLL_BYPASS; pll_params->flags |= TEGRA_PLLM; pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); if (IS_ERR(pll)) return ERR_CAST(pll); clk = _tegra_clk_register_pll(pll, name, parent_name, flags, &tegra_clk_pll_ops); if (IS_ERR(clk)) kfree(pll); return clk; } struct clk *tegra_clk_register_pllc(const char *name, const char *parent_name, void __iomem *clk_base, void __iomem *pmc, unsigned long flags, struct tegra_clk_pll_params *pll_params, spinlock_t *lock) { struct clk *parent, *clk; const struct pdiv_map *p_tohw = pll_params->pdiv_tohw; struct tegra_clk_pll *pll; struct tegra_clk_pll_freq_table cfg; unsigned long parent_rate; if (!p_tohw) return ERR_PTR(-EINVAL); parent = __clk_lookup(parent_name); if (!parent) { WARN(1, "parent clk %s of %s must be registered first\n", parent_name, name); return ERR_PTR(-EINVAL); } parent_rate = clk_get_rate(parent); pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); pll_params->flags |= TEGRA_PLL_BYPASS; pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); if (IS_ERR(pll)) return ERR_CAST(pll); /* * Most of PLLC register fields are shadowed, and can not be read * directly from PLL h/w. Hence, actual PLLC boot state is unknown. * Initialize PLL to default state: disabled, reset; shadow registers * loaded with default parameters; dividers are preset for half of * minimum VCO rate (the latter assured that shadowed divider settings * are within supported range). */ cfg.m = _pll_fixed_mdiv(pll_params, parent_rate); cfg.n = cfg.m * pll_params->vco_min / parent_rate; while (p_tohw->pdiv) { if (p_tohw->pdiv == 2) { cfg.p = p_tohw->hw_val; break; } p_tohw++; } if (!p_tohw->pdiv) { WARN_ON(1); return ERR_PTR(-EINVAL); } pll_writel_base(0, pll); _update_pll_mnp(pll, &cfg); pll_writel_misc(PLLCX_MISC_DEFAULT, pll); pll_writel(PLLCX_MISC1_DEFAULT, pll_params->ext_misc_reg[0], pll); pll_writel(PLLCX_MISC2_DEFAULT, pll_params->ext_misc_reg[1], pll); pll_writel(PLLCX_MISC3_DEFAULT, pll_params->ext_misc_reg[2], pll); _pllcx_update_dynamic_coef(pll, parent_rate, cfg.n); clk = _tegra_clk_register_pll(pll, name, parent_name, flags, &tegra_clk_pllc_ops); if (IS_ERR(clk)) kfree(pll); return clk; } struct clk *tegra_clk_register_plle_tegra114(const char *name, const char *parent_name, void __iomem *clk_base, unsigned long flags, struct tegra_clk_pll_params *pll_params, spinlock_t *lock) { struct tegra_clk_pll *pll; struct clk *clk; pll = _tegra_init_pll(clk_base, NULL, pll_params, lock); if (IS_ERR(pll)) return ERR_CAST(pll); _clk_plle_tegra_init_parent(pll); clk = _tegra_clk_register_pll(pll, name, parent_name, flags, &tegra_clk_plle_tegra114_ops); if (IS_ERR(clk)) kfree(pll); return clk; } struct clk * tegra_clk_register_pllu_tegra114(const char *name, const char *parent_name, void __iomem *clk_base, unsigned long flags, struct tegra_clk_pll_params *pll_params, spinlock_t *lock) { struct tegra_clk_pll *pll; struct clk *clk; pll_params->flags |= TEGRA_PLLU; pll = _tegra_init_pll(clk_base, NULL, pll_params, lock); if (IS_ERR(pll)) return ERR_CAST(pll); clk = _tegra_clk_register_pll(pll, name, parent_name, flags, &tegra_clk_pllu_tegra114_ops); if (IS_ERR(clk)) kfree(pll); return clk; } #endif #if defined(CONFIG_ARCH_TEGRA_124_SOC) || defined(CONFIG_ARCH_TEGRA_132_SOC) || defined(CONFIG_ARCH_TEGRA_210_SOC) static const struct clk_ops tegra_clk_pllss_ops = { .is_enabled = clk_pll_is_enabled, .enable = clk_pll_enable, .disable = clk_pll_disable, .recalc_rate = clk_pll_recalc_rate, .round_rate = clk_pll_ramp_round_rate, .set_rate = clk_pllxc_set_rate, .restore_context = tegra_clk_pll_restore_context, }; struct clk *tegra_clk_register_pllss(const char *name, const char *parent_name, void __iomem *clk_base, unsigned long flags, struct tegra_clk_pll_params *pll_params, spinlock_t *lock) { struct tegra_clk_pll *pll; struct clk *clk, *parent; struct tegra_clk_pll_freq_table cfg; unsigned long parent_rate; u32 val, val_iddq; int i; if (!pll_params->div_nmp) return ERR_PTR(-EINVAL); parent = __clk_lookup(parent_name); if (!parent) { WARN(1, "parent clk %s of %s must be registered first\n", parent_name, name); return ERR_PTR(-EINVAL); } pll = _tegra_init_pll(clk_base, NULL, pll_params, lock); if (IS_ERR(pll)) return ERR_CAST(pll); val = pll_readl_base(pll); val &= ~PLLSS_REF_SRC_SEL_MASK; pll_writel_base(val, pll); parent_rate = clk_get_rate(parent); pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); /* initialize PLL to minimum rate */ cfg.m = _pll_fixed_mdiv(pll_params, parent_rate); cfg.n = cfg.m * pll_params->vco_min / parent_rate; for (i = 0; pll_params->pdiv_tohw[i].pdiv; i++) ; if (!i) { kfree(pll); return ERR_PTR(-EINVAL); } cfg.p = pll_params->pdiv_tohw[i-1].hw_val; _update_pll_mnp(pll, &cfg); pll_writel_misc(PLLSS_MISC_DEFAULT, pll); pll_writel(PLLSS_CFG_DEFAULT, pll_params->ext_misc_reg[0], pll); pll_writel(PLLSS_CTRL1_DEFAULT, pll_params->ext_misc_reg[1], pll); pll_writel(PLLSS_CTRL1_DEFAULT, pll_params->ext_misc_reg[2], pll); val = pll_readl_base(pll); val_iddq = readl_relaxed(clk_base + pll_params->iddq_reg); if (val & PLL_BASE_ENABLE) { if (val_iddq & BIT(pll_params->iddq_bit_idx)) { WARN(1, "%s is on but IDDQ set\n", name); kfree(pll); return ERR_PTR(-EINVAL); } } else { val_iddq |= BIT(pll_params->iddq_bit_idx); writel_relaxed(val_iddq, clk_base + pll_params->iddq_reg); } val &= ~PLLSS_LOCK_OVERRIDE; pll_writel_base(val, pll); clk = _tegra_clk_register_pll(pll, name, parent_name, flags, &tegra_clk_pllss_ops); if (IS_ERR(clk)) kfree(pll); return clk; } #endif #if defined(CONFIG_ARCH_TEGRA_210_SOC) struct clk *tegra_clk_register_pllre_tegra210(const char *name, const char *parent_name, void __iomem *clk_base, void __iomem *pmc, unsigned long flags, struct tegra_clk_pll_params *pll_params, spinlock_t *lock, unsigned long parent_rate) { struct tegra_clk_pll *pll; struct clk *clk; pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); if (pll_params->adjust_vco) pll_params->vco_min = pll_params->adjust_vco(pll_params, parent_rate); pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); if (IS_ERR(pll)) return ERR_CAST(pll); clk = _tegra_clk_register_pll(pll, name, parent_name, flags, &tegra_clk_pll_ops); if (IS_ERR(clk)) kfree(pll); return clk; } static int clk_plle_tegra210_is_enabled(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); u32 val; val = pll_readl_base(pll); return val & PLLE_BASE_ENABLE ? 1 : 0; } static int clk_plle_tegra210_enable(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); struct tegra_clk_pll_freq_table sel; u32 val; int ret = 0; unsigned long flags = 0; unsigned long input_rate; if (clk_plle_tegra210_is_enabled(hw)) return 0; input_rate = clk_hw_get_rate(clk_hw_get_parent(hw)); if (_get_table_rate(hw, &sel, pll->params->fixed_rate, input_rate)) return -EINVAL; if (pll->lock) spin_lock_irqsave(pll->lock, flags); val = pll_readl(pll->params->aux_reg, pll); if (val & PLLE_AUX_SEQ_ENABLE) goto out; val = pll_readl_base(pll); val &= ~BIT(30); /* Disable lock override */ pll_writel_base(val, pll); val = pll_readl_misc(pll); val |= PLLE_MISC_LOCK_ENABLE; val |= PLLE_MISC_IDDQ_SW_CTRL; val &= ~PLLE_MISC_IDDQ_SW_VALUE; val |= PLLE_MISC_PLLE_PTS; val &= ~(PLLE_MISC_VREG_BG_CTRL_MASK | PLLE_MISC_VREG_CTRL_MASK); pll_writel_misc(val, pll); udelay(5); val = pll_readl(PLLE_SS_CTRL, pll); val |= PLLE_SS_DISABLE; pll_writel(val, PLLE_SS_CTRL, pll); val = pll_readl_base(pll); val &= ~(divp_mask_shifted(pll) | divn_mask_shifted(pll) | divm_mask_shifted(pll)); val &= ~(PLLE_BASE_DIVCML_MASK << PLLE_BASE_DIVCML_SHIFT); val |= sel.m << divm_shift(pll); val |= sel.n << divn_shift(pll); val |= sel.cpcon << PLLE_BASE_DIVCML_SHIFT; pll_writel_base(val, pll); udelay(1); val = pll_readl_base(pll); val |= PLLE_BASE_ENABLE; pll_writel_base(val, pll); ret = clk_pll_wait_for_lock(pll); if (ret < 0) goto out; val = pll_readl(PLLE_SS_CTRL, pll); val &= ~(PLLE_SS_CNTL_CENTER | PLLE_SS_CNTL_INVERT); val &= ~PLLE_SS_COEFFICIENTS_MASK; val |= PLLE_SS_COEFFICIENTS_VAL_TEGRA210; pll_writel(val, PLLE_SS_CTRL, pll); val &= ~(PLLE_SS_CNTL_SSC_BYP | PLLE_SS_CNTL_BYPASS_SS); pll_writel(val, PLLE_SS_CTRL, pll); udelay(1); val &= ~PLLE_SS_CNTL_INTERP_RESET; pll_writel(val, PLLE_SS_CTRL, pll); udelay(1); out: if (pll->lock) spin_unlock_irqrestore(pll->lock, flags); return ret; } static void clk_plle_tegra210_disable(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); unsigned long flags = 0; u32 val; if (pll->lock) spin_lock_irqsave(pll->lock, flags); /* If PLLE HW sequencer is enabled, SW should not disable PLLE */ val = pll_readl(pll->params->aux_reg, pll); if (val & PLLE_AUX_SEQ_ENABLE) goto out; val = pll_readl_base(pll); val &= ~PLLE_BASE_ENABLE; pll_writel_base(val, pll); val = pll_readl(pll->params->aux_reg, pll); val |= PLLE_AUX_ENABLE_SWCTL | PLLE_AUX_SS_SWCTL; pll_writel(val, pll->params->aux_reg, pll); val = pll_readl_misc(pll); val |= PLLE_MISC_IDDQ_SW_CTRL | PLLE_MISC_IDDQ_SW_VALUE; pll_writel_misc(val, pll); udelay(1); out: if (pll->lock) spin_unlock_irqrestore(pll->lock, flags); } static void tegra_clk_plle_t210_restore_context(struct clk_hw *hw) { struct tegra_clk_pll *pll = to_clk_pll(hw); _clk_plle_tegra_init_parent(pll); } static const struct clk_ops tegra_clk_plle_tegra210_ops = { .is_enabled = clk_plle_tegra210_is_enabled, .enable = clk_plle_tegra210_enable, .disable = clk_plle_tegra210_disable, .recalc_rate = clk_pll_recalc_rate, .restore_context = tegra_clk_plle_t210_restore_context, }; struct clk *tegra_clk_register_plle_tegra210(const char *name, const char *parent_name, void __iomem *clk_base, unsigned long flags, struct tegra_clk_pll_params *pll_params, spinlock_t *lock) { struct tegra_clk_pll *pll; struct clk *clk; pll = _tegra_init_pll(clk_base, NULL, pll_params, lock); if (IS_ERR(pll)) return ERR_CAST(pll); _clk_plle_tegra_init_parent(pll); clk = _tegra_clk_register_pll(pll, name, parent_name, flags, &tegra_clk_plle_tegra210_ops); if (IS_ERR(clk)) kfree(pll); return clk; } struct clk *tegra_clk_register_pllc_tegra210(const char *name, const char *parent_name, void __iomem *clk_base, void __iomem *pmc, unsigned long flags, struct tegra_clk_pll_params *pll_params, spinlock_t *lock) { struct clk *parent, *clk; const struct pdiv_map *p_tohw = pll_params->pdiv_tohw; struct tegra_clk_pll *pll; unsigned long parent_rate; if (!p_tohw) return ERR_PTR(-EINVAL); parent = __clk_lookup(parent_name); if (!parent) { WARN(1, "parent clk %s of %s must be registered first\n", name, parent_name); return ERR_PTR(-EINVAL); } parent_rate = clk_get_rate(parent); pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); if (pll_params->adjust_vco) pll_params->vco_min = pll_params->adjust_vco(pll_params, parent_rate); pll_params->flags |= TEGRA_PLL_BYPASS; pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); if (IS_ERR(pll)) return ERR_CAST(pll); clk = _tegra_clk_register_pll(pll, name, parent_name, flags, &tegra_clk_pll_ops); if (IS_ERR(clk)) kfree(pll); return clk; } struct clk *tegra_clk_register_pllss_tegra210(const char *name, const char *parent_name, void __iomem *clk_base, unsigned long flags, struct tegra_clk_pll_params *pll_params, spinlock_t *lock) { struct tegra_clk_pll *pll; struct clk *clk, *parent; unsigned long parent_rate; u32 val; if (!pll_params->div_nmp) return ERR_PTR(-EINVAL); parent = __clk_lookup(parent_name); if (!parent) { WARN(1, "parent clk %s of %s must be registered first\n", name, parent_name); return ERR_PTR(-EINVAL); } val = readl_relaxed(clk_base + pll_params->base_reg); if (val & PLLSS_REF_SRC_SEL_MASK) { WARN(1, "not supported reference clock for %s\n", name); return ERR_PTR(-EINVAL); } parent_rate = clk_get_rate(parent); pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); if (pll_params->adjust_vco) pll_params->vco_min = pll_params->adjust_vco(pll_params, parent_rate); pll_params->flags |= TEGRA_PLL_BYPASS; pll = _tegra_init_pll(clk_base, NULL, pll_params, lock); if (IS_ERR(pll)) return ERR_CAST(pll); clk = _tegra_clk_register_pll(pll, name, parent_name, flags, &tegra_clk_pll_ops); if (IS_ERR(clk)) kfree(pll); return clk; } struct clk *tegra_clk_register_pllmb(const char *name, const char *parent_name, void __iomem *clk_base, void __iomem *pmc, unsigned long flags, struct tegra_clk_pll_params *pll_params, spinlock_t *lock) { struct tegra_clk_pll *pll; struct clk *clk, *parent; unsigned long parent_rate; if (!pll_params->pdiv_tohw) return ERR_PTR(-EINVAL); parent = __clk_lookup(parent_name); if (!parent) { WARN(1, "parent clk %s of %s must be registered first\n", parent_name, name); return ERR_PTR(-EINVAL); } parent_rate = clk_get_rate(parent); pll_params->vco_min = _clip_vco_min(pll_params->vco_min, parent_rate); if (pll_params->adjust_vco) pll_params->vco_min = pll_params->adjust_vco(pll_params, parent_rate); pll_params->flags |= TEGRA_PLL_BYPASS; pll_params->flags |= TEGRA_PLLMB; pll = _tegra_init_pll(clk_base, pmc, pll_params, lock); if (IS_ERR(pll)) return ERR_CAST(pll); clk = _tegra_clk_register_pll(pll, name, parent_name, flags, &tegra_clk_pll_ops); if (IS_ERR(clk)) kfree(pll); return clk; } #endif
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