| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Vinod Koul | 2393 | 64.00% | 3 | 8.57% |
| Bartosz Golaszewski | 694 | 18.56% | 15 | 42.86% |
| Andrew Halaney | 487 | 13.02% | 7 | 20.00% |
| Bhupesh Sharma | 87 | 2.33% | 2 | 5.71% |
| Sneh Shah | 25 | 0.67% | 1 | 2.86% |
| Björn Andersson | 22 | 0.59% | 2 | 5.71% |
| Andrey Konovalov | 12 | 0.32% | 1 | 2.86% |
| Wei Yongjun | 10 | 0.27% | 1 | 2.86% |
| shenwei.wang at nxp.com | 4 | 0.11% | 1 | 2.86% |
| Dejin Zheng | 3 | 0.08% | 1 | 2.86% |
| Yang Yingliang | 2 | 0.05% | 1 | 2.86% |
| Total | 3739 | 35 |
// SPDX-License-Identifier: GPL-2.0 // Copyright (c) 2018-19, Linaro Limited #include <linux/module.h> #include <linux/of.h> #include <linux/of_net.h> #include <linux/platform_device.h> #include <linux/phy.h> #include <linux/phy/phy.h> #include "stmmac.h" #include "stmmac_platform.h" #define RGMII_IO_MACRO_CONFIG 0x0 #define SDCC_HC_REG_DLL_CONFIG 0x4 #define SDCC_TEST_CTL 0x8 #define SDCC_HC_REG_DDR_CONFIG 0xC #define SDCC_HC_REG_DLL_CONFIG2 0x10 #define SDC4_STATUS 0x14 #define SDCC_USR_CTL 0x18 #define RGMII_IO_MACRO_CONFIG2 0x1C #define RGMII_IO_MACRO_DEBUG1 0x20 #define EMAC_SYSTEM_LOW_POWER_DEBUG 0x28 /* RGMII_IO_MACRO_CONFIG fields */ #define RGMII_CONFIG_FUNC_CLK_EN BIT(30) #define RGMII_CONFIG_POS_NEG_DATA_SEL BIT(23) #define RGMII_CONFIG_GPIO_CFG_RX_INT GENMASK(21, 20) #define RGMII_CONFIG_GPIO_CFG_TX_INT GENMASK(19, 17) #define RGMII_CONFIG_MAX_SPD_PRG_9 GENMASK(16, 8) #define RGMII_CONFIG_MAX_SPD_PRG_2 GENMASK(7, 6) #define RGMII_CONFIG_INTF_SEL GENMASK(5, 4) #define RGMII_CONFIG_BYPASS_TX_ID_EN BIT(3) #define RGMII_CONFIG_LOOPBACK_EN BIT(2) #define RGMII_CONFIG_PROG_SWAP BIT(1) #define RGMII_CONFIG_DDR_MODE BIT(0) #define RGMII_CONFIG_SGMII_CLK_DVDR GENMASK(18, 10) /* SDCC_HC_REG_DLL_CONFIG fields */ #define SDCC_DLL_CONFIG_DLL_RST BIT(30) #define SDCC_DLL_CONFIG_PDN BIT(29) #define SDCC_DLL_CONFIG_MCLK_FREQ GENMASK(26, 24) #define SDCC_DLL_CONFIG_CDR_SELEXT GENMASK(23, 20) #define SDCC_DLL_CONFIG_CDR_EXT_EN BIT(19) #define SDCC_DLL_CONFIG_CK_OUT_EN BIT(18) #define SDCC_DLL_CONFIG_CDR_EN BIT(17) #define SDCC_DLL_CONFIG_DLL_EN BIT(16) #define SDCC_DLL_MCLK_GATING_EN BIT(5) #define SDCC_DLL_CDR_FINE_PHASE GENMASK(3, 2) /* SDCC_HC_REG_DDR_CONFIG fields */ #define SDCC_DDR_CONFIG_PRG_DLY_EN BIT(31) #define SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY GENMASK(26, 21) #define SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_CODE GENMASK(29, 27) #define SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN BIT(30) #define SDCC_DDR_CONFIG_TCXO_CYCLES_CNT GENMASK(11, 9) #define SDCC_DDR_CONFIG_PRG_RCLK_DLY GENMASK(8, 0) /* SDCC_HC_REG_DLL_CONFIG2 fields */ #define SDCC_DLL_CONFIG2_DLL_CLOCK_DIS BIT(21) #define SDCC_DLL_CONFIG2_MCLK_FREQ_CALC GENMASK(17, 10) #define SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SEL GENMASK(3, 2) #define SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SW BIT(1) #define SDCC_DLL_CONFIG2_DDR_CAL_EN BIT(0) /* SDC4_STATUS bits */ #define SDC4_STATUS_DLL_LOCK BIT(7) /* RGMII_IO_MACRO_CONFIG2 fields */ #define RGMII_CONFIG2_RSVD_CONFIG15 GENMASK(31, 17) #define RGMII_CONFIG2_RGMII_CLK_SEL_CFG BIT(16) #define RGMII_CONFIG2_TX_TO_RX_LOOPBACK_EN BIT(13) #define RGMII_CONFIG2_CLK_DIVIDE_SEL BIT(12) #define RGMII_CONFIG2_RX_PROG_SWAP BIT(7) #define RGMII_CONFIG2_DATA_DIVIDE_CLK_SEL BIT(6) #define RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN BIT(5) /* MAC_CTRL_REG bits */ #define ETHQOS_MAC_CTRL_SPEED_MODE BIT(14) #define ETHQOS_MAC_CTRL_PORT_SEL BIT(15) #define SGMII_10M_RX_CLK_DVDR 0x31 struct ethqos_emac_por { unsigned int offset; unsigned int value; }; struct ethqos_emac_driver_data { const struct ethqos_emac_por *por; unsigned int num_por; bool rgmii_config_loopback_en; bool has_emac_ge_3; const char *link_clk_name; bool has_integrated_pcs; struct dwmac4_addrs dwmac4_addrs; }; struct qcom_ethqos { struct platform_device *pdev; void __iomem *rgmii_base; void __iomem *mac_base; int (*configure_func)(struct qcom_ethqos *ethqos); unsigned int link_clk_rate; struct clk *link_clk; struct phy *serdes_phy; unsigned int speed; phy_interface_t phy_mode; const struct ethqos_emac_por *por; unsigned int num_por; bool rgmii_config_loopback_en; bool has_emac_ge_3; }; static int rgmii_readl(struct qcom_ethqos *ethqos, unsigned int offset) { return readl(ethqos->rgmii_base + offset); } static void rgmii_writel(struct qcom_ethqos *ethqos, int value, unsigned int offset) { writel(value, ethqos->rgmii_base + offset); } static void rgmii_updatel(struct qcom_ethqos *ethqos, int mask, int val, unsigned int offset) { unsigned int temp; temp = rgmii_readl(ethqos, offset); temp = (temp & ~(mask)) | val; rgmii_writel(ethqos, temp, offset); } static void rgmii_dump(void *priv) { struct qcom_ethqos *ethqos = priv; struct device *dev = ðqos->pdev->dev; dev_dbg(dev, "Rgmii register dump\n"); dev_dbg(dev, "RGMII_IO_MACRO_CONFIG: %x\n", rgmii_readl(ethqos, RGMII_IO_MACRO_CONFIG)); dev_dbg(dev, "SDCC_HC_REG_DLL_CONFIG: %x\n", rgmii_readl(ethqos, SDCC_HC_REG_DLL_CONFIG)); dev_dbg(dev, "SDCC_HC_REG_DDR_CONFIG: %x\n", rgmii_readl(ethqos, SDCC_HC_REG_DDR_CONFIG)); dev_dbg(dev, "SDCC_HC_REG_DLL_CONFIG2: %x\n", rgmii_readl(ethqos, SDCC_HC_REG_DLL_CONFIG2)); dev_dbg(dev, "SDC4_STATUS: %x\n", rgmii_readl(ethqos, SDC4_STATUS)); dev_dbg(dev, "SDCC_USR_CTL: %x\n", rgmii_readl(ethqos, SDCC_USR_CTL)); dev_dbg(dev, "RGMII_IO_MACRO_CONFIG2: %x\n", rgmii_readl(ethqos, RGMII_IO_MACRO_CONFIG2)); dev_dbg(dev, "RGMII_IO_MACRO_DEBUG1: %x\n", rgmii_readl(ethqos, RGMII_IO_MACRO_DEBUG1)); dev_dbg(dev, "EMAC_SYSTEM_LOW_POWER_DEBUG: %x\n", rgmii_readl(ethqos, EMAC_SYSTEM_LOW_POWER_DEBUG)); } /* Clock rates */ #define RGMII_1000_NOM_CLK_FREQ (250 * 1000 * 1000UL) #define RGMII_ID_MODE_100_LOW_SVS_CLK_FREQ (50 * 1000 * 1000UL) #define RGMII_ID_MODE_10_LOW_SVS_CLK_FREQ (5 * 1000 * 1000UL) static void ethqos_update_link_clk(struct qcom_ethqos *ethqos, unsigned int speed) { switch (speed) { case SPEED_1000: ethqos->link_clk_rate = RGMII_1000_NOM_CLK_FREQ; break; case SPEED_100: ethqos->link_clk_rate = RGMII_ID_MODE_100_LOW_SVS_CLK_FREQ; break; case SPEED_10: ethqos->link_clk_rate = RGMII_ID_MODE_10_LOW_SVS_CLK_FREQ; break; } clk_set_rate(ethqos->link_clk, ethqos->link_clk_rate); } static void ethqos_set_func_clk_en(struct qcom_ethqos *ethqos) { rgmii_updatel(ethqos, RGMII_CONFIG_FUNC_CLK_EN, RGMII_CONFIG_FUNC_CLK_EN, RGMII_IO_MACRO_CONFIG); } static const struct ethqos_emac_por emac_v2_3_0_por[] = { { .offset = RGMII_IO_MACRO_CONFIG, .value = 0x00C01343 }, { .offset = SDCC_HC_REG_DLL_CONFIG, .value = 0x2004642C }, { .offset = SDCC_HC_REG_DDR_CONFIG, .value = 0x00000000 }, { .offset = SDCC_HC_REG_DLL_CONFIG2, .value = 0x00200000 }, { .offset = SDCC_USR_CTL, .value = 0x00010800 }, { .offset = RGMII_IO_MACRO_CONFIG2, .value = 0x00002060 }, }; static const struct ethqos_emac_driver_data emac_v2_3_0_data = { .por = emac_v2_3_0_por, .num_por = ARRAY_SIZE(emac_v2_3_0_por), .rgmii_config_loopback_en = true, .has_emac_ge_3 = false, }; static const struct ethqos_emac_por emac_v2_1_0_por[] = { { .offset = RGMII_IO_MACRO_CONFIG, .value = 0x40C01343 }, { .offset = SDCC_HC_REG_DLL_CONFIG, .value = 0x2004642C }, { .offset = SDCC_HC_REG_DDR_CONFIG, .value = 0x00000000 }, { .offset = SDCC_HC_REG_DLL_CONFIG2, .value = 0x00200000 }, { .offset = SDCC_USR_CTL, .value = 0x00010800 }, { .offset = RGMII_IO_MACRO_CONFIG2, .value = 0x00002060 }, }; static const struct ethqos_emac_driver_data emac_v2_1_0_data = { .por = emac_v2_1_0_por, .num_por = ARRAY_SIZE(emac_v2_1_0_por), .rgmii_config_loopback_en = false, .has_emac_ge_3 = false, }; static const struct ethqos_emac_por emac_v3_0_0_por[] = { { .offset = RGMII_IO_MACRO_CONFIG, .value = 0x40c01343 }, { .offset = SDCC_HC_REG_DLL_CONFIG, .value = 0x2004642c }, { .offset = SDCC_HC_REG_DDR_CONFIG, .value = 0x80040800 }, { .offset = SDCC_HC_REG_DLL_CONFIG2, .value = 0x00200000 }, { .offset = SDCC_USR_CTL, .value = 0x00010800 }, { .offset = RGMII_IO_MACRO_CONFIG2, .value = 0x00002060 }, }; static const struct ethqos_emac_driver_data emac_v3_0_0_data = { .por = emac_v3_0_0_por, .num_por = ARRAY_SIZE(emac_v3_0_0_por), .rgmii_config_loopback_en = false, .has_emac_ge_3 = true, .dwmac4_addrs = { .dma_chan = 0x00008100, .dma_chan_offset = 0x1000, .mtl_chan = 0x00008000, .mtl_chan_offset = 0x1000, .mtl_ets_ctrl = 0x00008010, .mtl_ets_ctrl_offset = 0x1000, .mtl_txq_weight = 0x00008018, .mtl_txq_weight_offset = 0x1000, .mtl_send_slp_cred = 0x0000801c, .mtl_send_slp_cred_offset = 0x1000, .mtl_high_cred = 0x00008020, .mtl_high_cred_offset = 0x1000, .mtl_low_cred = 0x00008024, .mtl_low_cred_offset = 0x1000, }, }; static const struct ethqos_emac_por emac_v4_0_0_por[] = { { .offset = RGMII_IO_MACRO_CONFIG, .value = 0x40c01343 }, { .offset = SDCC_HC_REG_DLL_CONFIG, .value = 0x2004642c }, { .offset = SDCC_HC_REG_DDR_CONFIG, .value = 0x80040800 }, { .offset = SDCC_HC_REG_DLL_CONFIG2, .value = 0x00200000 }, { .offset = SDCC_USR_CTL, .value = 0x00010800 }, { .offset = RGMII_IO_MACRO_CONFIG2, .value = 0x00002060 }, }; static const struct ethqos_emac_driver_data emac_v4_0_0_data = { .por = emac_v4_0_0_por, .num_por = ARRAY_SIZE(emac_v3_0_0_por), .rgmii_config_loopback_en = false, .has_emac_ge_3 = true, .link_clk_name = "phyaux", .has_integrated_pcs = true, .dwmac4_addrs = { .dma_chan = 0x00008100, .dma_chan_offset = 0x1000, .mtl_chan = 0x00008000, .mtl_chan_offset = 0x1000, .mtl_ets_ctrl = 0x00008010, .mtl_ets_ctrl_offset = 0x1000, .mtl_txq_weight = 0x00008018, .mtl_txq_weight_offset = 0x1000, .mtl_send_slp_cred = 0x0000801c, .mtl_send_slp_cred_offset = 0x1000, .mtl_high_cred = 0x00008020, .mtl_high_cred_offset = 0x1000, .mtl_low_cred = 0x00008024, .mtl_low_cred_offset = 0x1000, }, }; static int ethqos_dll_configure(struct qcom_ethqos *ethqos) { struct device *dev = ðqos->pdev->dev; unsigned int val; int retry = 1000; /* Set CDR_EN */ rgmii_updatel(ethqos, SDCC_DLL_CONFIG_CDR_EN, SDCC_DLL_CONFIG_CDR_EN, SDCC_HC_REG_DLL_CONFIG); /* Set CDR_EXT_EN */ rgmii_updatel(ethqos, SDCC_DLL_CONFIG_CDR_EXT_EN, SDCC_DLL_CONFIG_CDR_EXT_EN, SDCC_HC_REG_DLL_CONFIG); /* Clear CK_OUT_EN */ rgmii_updatel(ethqos, SDCC_DLL_CONFIG_CK_OUT_EN, 0, SDCC_HC_REG_DLL_CONFIG); /* Set DLL_EN */ rgmii_updatel(ethqos, SDCC_DLL_CONFIG_DLL_EN, SDCC_DLL_CONFIG_DLL_EN, SDCC_HC_REG_DLL_CONFIG); if (!ethqos->has_emac_ge_3) { rgmii_updatel(ethqos, SDCC_DLL_MCLK_GATING_EN, 0, SDCC_HC_REG_DLL_CONFIG); rgmii_updatel(ethqos, SDCC_DLL_CDR_FINE_PHASE, 0, SDCC_HC_REG_DLL_CONFIG); } /* Wait for CK_OUT_EN clear */ do { val = rgmii_readl(ethqos, SDCC_HC_REG_DLL_CONFIG); val &= SDCC_DLL_CONFIG_CK_OUT_EN; if (!val) break; mdelay(1); retry--; } while (retry > 0); if (!retry) dev_err(dev, "Clear CK_OUT_EN timedout\n"); /* Set CK_OUT_EN */ rgmii_updatel(ethqos, SDCC_DLL_CONFIG_CK_OUT_EN, SDCC_DLL_CONFIG_CK_OUT_EN, SDCC_HC_REG_DLL_CONFIG); /* Wait for CK_OUT_EN set */ retry = 1000; do { val = rgmii_readl(ethqos, SDCC_HC_REG_DLL_CONFIG); val &= SDCC_DLL_CONFIG_CK_OUT_EN; if (val) break; mdelay(1); retry--; } while (retry > 0); if (!retry) dev_err(dev, "Set CK_OUT_EN timedout\n"); /* Set DDR_CAL_EN */ rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DDR_CAL_EN, SDCC_DLL_CONFIG2_DDR_CAL_EN, SDCC_HC_REG_DLL_CONFIG2); if (!ethqos->has_emac_ge_3) { rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DLL_CLOCK_DIS, 0, SDCC_HC_REG_DLL_CONFIG2); rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_MCLK_FREQ_CALC, 0x1A << 10, SDCC_HC_REG_DLL_CONFIG2); rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SEL, BIT(2), SDCC_HC_REG_DLL_CONFIG2); rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SW, SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SW, SDCC_HC_REG_DLL_CONFIG2); } return 0; } static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos) { struct device *dev = ðqos->pdev->dev; int phase_shift; int loopback; /* Determine if the PHY adds a 2 ns TX delay or the MAC handles it */ if (ethqos->phy_mode == PHY_INTERFACE_MODE_RGMII_ID || ethqos->phy_mode == PHY_INTERFACE_MODE_RGMII_TXID) phase_shift = 0; else phase_shift = RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN; /* Disable loopback mode */ rgmii_updatel(ethqos, RGMII_CONFIG2_TX_TO_RX_LOOPBACK_EN, 0, RGMII_IO_MACRO_CONFIG2); /* Determine if this platform wants loopback enabled after programming */ if (ethqos->rgmii_config_loopback_en) loopback = RGMII_CONFIG_LOOPBACK_EN; else loopback = 0; /* Select RGMII, write 0 to interface select */ rgmii_updatel(ethqos, RGMII_CONFIG_INTF_SEL, 0, RGMII_IO_MACRO_CONFIG); switch (ethqos->speed) { case SPEED_1000: rgmii_updatel(ethqos, RGMII_CONFIG_DDR_MODE, RGMII_CONFIG_DDR_MODE, RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG_BYPASS_TX_ID_EN, 0, RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG_POS_NEG_DATA_SEL, RGMII_CONFIG_POS_NEG_DATA_SEL, RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG_PROG_SWAP, RGMII_CONFIG_PROG_SWAP, RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG2_DATA_DIVIDE_CLK_SEL, 0, RGMII_IO_MACRO_CONFIG2); rgmii_updatel(ethqos, RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN, phase_shift, RGMII_IO_MACRO_CONFIG2); rgmii_updatel(ethqos, RGMII_CONFIG2_RSVD_CONFIG15, 0, RGMII_IO_MACRO_CONFIG2); rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP, RGMII_CONFIG2_RX_PROG_SWAP, RGMII_IO_MACRO_CONFIG2); /* PRG_RCLK_DLY = TCXO period * TCXO_CYCLES_CNT / 2 * RX delay ns, * in practice this becomes PRG_RCLK_DLY = 52 * 4 / 2 * RX delay ns */ if (ethqos->has_emac_ge_3) { /* 0.9 ns */ rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_RCLK_DLY, 115, SDCC_HC_REG_DDR_CONFIG); } else { /* 1.8 ns */ rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_RCLK_DLY, 57, SDCC_HC_REG_DDR_CONFIG); } rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_DLY_EN, SDCC_DDR_CONFIG_PRG_DLY_EN, SDCC_HC_REG_DDR_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN, loopback, RGMII_IO_MACRO_CONFIG); break; case SPEED_100: rgmii_updatel(ethqos, RGMII_CONFIG_DDR_MODE, RGMII_CONFIG_DDR_MODE, RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG_BYPASS_TX_ID_EN, RGMII_CONFIG_BYPASS_TX_ID_EN, RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG_POS_NEG_DATA_SEL, 0, RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG_PROG_SWAP, 0, RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG2_DATA_DIVIDE_CLK_SEL, 0, RGMII_IO_MACRO_CONFIG2); rgmii_updatel(ethqos, RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN, phase_shift, RGMII_IO_MACRO_CONFIG2); rgmii_updatel(ethqos, RGMII_CONFIG_MAX_SPD_PRG_2, BIT(6), RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG2_RSVD_CONFIG15, 0, RGMII_IO_MACRO_CONFIG2); if (ethqos->has_emac_ge_3) rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP, RGMII_CONFIG2_RX_PROG_SWAP, RGMII_IO_MACRO_CONFIG2); else rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP, 0, RGMII_IO_MACRO_CONFIG2); /* Write 0x5 to PRG_RCLK_DLY_CODE */ rgmii_updatel(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_CODE, (BIT(29) | BIT(27)), SDCC_HC_REG_DDR_CONFIG); rgmii_updatel(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY, SDCC_HC_REG_DDR_CONFIG); rgmii_updatel(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN, SDCC_HC_REG_DDR_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN, loopback, RGMII_IO_MACRO_CONFIG); break; case SPEED_10: rgmii_updatel(ethqos, RGMII_CONFIG_DDR_MODE, RGMII_CONFIG_DDR_MODE, RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG_BYPASS_TX_ID_EN, RGMII_CONFIG_BYPASS_TX_ID_EN, RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG_POS_NEG_DATA_SEL, 0, RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG_PROG_SWAP, 0, RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG2_DATA_DIVIDE_CLK_SEL, 0, RGMII_IO_MACRO_CONFIG2); rgmii_updatel(ethqos, RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN, phase_shift, RGMII_IO_MACRO_CONFIG2); rgmii_updatel(ethqos, RGMII_CONFIG_MAX_SPD_PRG_9, BIT(12) | GENMASK(9, 8), RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG2_RSVD_CONFIG15, 0, RGMII_IO_MACRO_CONFIG2); if (ethqos->has_emac_ge_3) rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP, RGMII_CONFIG2_RX_PROG_SWAP, RGMII_IO_MACRO_CONFIG2); else rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP, 0, RGMII_IO_MACRO_CONFIG2); /* Write 0x5 to PRG_RCLK_DLY_CODE */ rgmii_updatel(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_CODE, (BIT(29) | BIT(27)), SDCC_HC_REG_DDR_CONFIG); rgmii_updatel(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY, SDCC_HC_REG_DDR_CONFIG); rgmii_updatel(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN, SDCC_HC_REG_DDR_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG_LOOPBACK_EN, loopback, RGMII_IO_MACRO_CONFIG); break; default: dev_err(dev, "Invalid speed %d\n", ethqos->speed); return -EINVAL; } return 0; } static int ethqos_configure_rgmii(struct qcom_ethqos *ethqos) { struct device *dev = ðqos->pdev->dev; volatile unsigned int dll_lock; unsigned int i, retry = 1000; /* Reset to POR values and enable clk */ for (i = 0; i < ethqos->num_por; i++) rgmii_writel(ethqos, ethqos->por[i].value, ethqos->por[i].offset); ethqos_set_func_clk_en(ethqos); /* Initialize the DLL first */ /* Set DLL_RST */ rgmii_updatel(ethqos, SDCC_DLL_CONFIG_DLL_RST, SDCC_DLL_CONFIG_DLL_RST, SDCC_HC_REG_DLL_CONFIG); /* Set PDN */ rgmii_updatel(ethqos, SDCC_DLL_CONFIG_PDN, SDCC_DLL_CONFIG_PDN, SDCC_HC_REG_DLL_CONFIG); if (ethqos->has_emac_ge_3) { if (ethqos->speed == SPEED_1000) { rgmii_writel(ethqos, 0x1800000, SDCC_TEST_CTL); rgmii_writel(ethqos, 0x2C010800, SDCC_USR_CTL); rgmii_writel(ethqos, 0xA001, SDCC_HC_REG_DLL_CONFIG2); } else { rgmii_writel(ethqos, 0x40010800, SDCC_USR_CTL); rgmii_writel(ethqos, 0xA001, SDCC_HC_REG_DLL_CONFIG2); } } /* Clear DLL_RST */ rgmii_updatel(ethqos, SDCC_DLL_CONFIG_DLL_RST, 0, SDCC_HC_REG_DLL_CONFIG); /* Clear PDN */ rgmii_updatel(ethqos, SDCC_DLL_CONFIG_PDN, 0, SDCC_HC_REG_DLL_CONFIG); if (ethqos->speed != SPEED_100 && ethqos->speed != SPEED_10) { /* Set DLL_EN */ rgmii_updatel(ethqos, SDCC_DLL_CONFIG_DLL_EN, SDCC_DLL_CONFIG_DLL_EN, SDCC_HC_REG_DLL_CONFIG); /* Set CK_OUT_EN */ rgmii_updatel(ethqos, SDCC_DLL_CONFIG_CK_OUT_EN, SDCC_DLL_CONFIG_CK_OUT_EN, SDCC_HC_REG_DLL_CONFIG); /* Set USR_CTL bit 26 with mask of 3 bits */ if (!ethqos->has_emac_ge_3) rgmii_updatel(ethqos, GENMASK(26, 24), BIT(26), SDCC_USR_CTL); /* wait for DLL LOCK */ do { mdelay(1); dll_lock = rgmii_readl(ethqos, SDC4_STATUS); if (dll_lock & SDC4_STATUS_DLL_LOCK) break; retry--; } while (retry > 0); if (!retry) dev_err(dev, "Timeout while waiting for DLL lock\n"); } if (ethqos->speed == SPEED_1000) ethqos_dll_configure(ethqos); ethqos_rgmii_macro_init(ethqos); return 0; } /* On interface toggle MAC registers gets reset. * Configure MAC block for SGMII on ethernet phy link up */ static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos) { int val; val = readl(ethqos->mac_base + MAC_CTRL_REG); switch (ethqos->speed) { case SPEED_1000: val &= ~ETHQOS_MAC_CTRL_PORT_SEL; rgmii_updatel(ethqos, RGMII_CONFIG2_RGMII_CLK_SEL_CFG, RGMII_CONFIG2_RGMII_CLK_SEL_CFG, RGMII_IO_MACRO_CONFIG2); break; case SPEED_100: val |= ETHQOS_MAC_CTRL_PORT_SEL | ETHQOS_MAC_CTRL_SPEED_MODE; break; case SPEED_10: val |= ETHQOS_MAC_CTRL_PORT_SEL; val &= ~ETHQOS_MAC_CTRL_SPEED_MODE; rgmii_updatel(ethqos, RGMII_CONFIG_SGMII_CLK_DVDR, FIELD_PREP(RGMII_CONFIG_SGMII_CLK_DVDR, SGMII_10M_RX_CLK_DVDR), RGMII_IO_MACRO_CONFIG); break; } writel(val, ethqos->mac_base + MAC_CTRL_REG); return val; } static int ethqos_configure(struct qcom_ethqos *ethqos) { return ethqos->configure_func(ethqos); } static void ethqos_fix_mac_speed(void *priv, unsigned int speed, unsigned int mode) { struct qcom_ethqos *ethqos = priv; ethqos->speed = speed; ethqos_update_link_clk(ethqos, speed); ethqos_configure(ethqos); } static int qcom_ethqos_serdes_powerup(struct net_device *ndev, void *priv) { struct qcom_ethqos *ethqos = priv; int ret; ret = phy_init(ethqos->serdes_phy); if (ret) return ret; ret = phy_power_on(ethqos->serdes_phy); if (ret) return ret; return phy_set_speed(ethqos->serdes_phy, ethqos->speed); } static void qcom_ethqos_serdes_powerdown(struct net_device *ndev, void *priv) { struct qcom_ethqos *ethqos = priv; phy_power_off(ethqos->serdes_phy); phy_exit(ethqos->serdes_phy); } static int ethqos_clks_config(void *priv, bool enabled) { struct qcom_ethqos *ethqos = priv; int ret = 0; if (enabled) { ret = clk_prepare_enable(ethqos->link_clk); if (ret) { dev_err(ðqos->pdev->dev, "link_clk enable failed\n"); return ret; } /* Enable functional clock to prevent DMA reset to timeout due * to lacking PHY clock after the hardware block has been power * cycled. The actual configuration will be adjusted once * ethqos_fix_mac_speed() is invoked. */ ethqos_set_func_clk_en(ethqos); } else { clk_disable_unprepare(ethqos->link_clk); } return ret; } static void ethqos_clks_disable(void *data) { ethqos_clks_config(data, false); } static void ethqos_ptp_clk_freq_config(struct stmmac_priv *priv) { struct plat_stmmacenet_data *plat_dat = priv->plat; int err; if (!plat_dat->clk_ptp_ref) return; /* Max the PTP ref clock out to get the best resolution possible */ err = clk_set_rate(plat_dat->clk_ptp_ref, ULONG_MAX); if (err) netdev_err(priv->dev, "Failed to max out clk_ptp_ref: %d\n", err); plat_dat->clk_ptp_rate = clk_get_rate(plat_dat->clk_ptp_ref); netdev_dbg(priv->dev, "PTP rate %d\n", plat_dat->clk_ptp_rate); } static int qcom_ethqos_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; const struct ethqos_emac_driver_data *data; struct plat_stmmacenet_data *plat_dat; struct stmmac_resources stmmac_res; struct device *dev = &pdev->dev; struct qcom_ethqos *ethqos; int ret; ret = stmmac_get_platform_resources(pdev, &stmmac_res); if (ret) return dev_err_probe(dev, ret, "Failed to get platform resources\n"); plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac); if (IS_ERR(plat_dat)) { return dev_err_probe(dev, PTR_ERR(plat_dat), "dt configuration failed\n"); } plat_dat->clks_config = ethqos_clks_config; ethqos = devm_kzalloc(dev, sizeof(*ethqos), GFP_KERNEL); if (!ethqos) return -ENOMEM; ret = of_get_phy_mode(np, ðqos->phy_mode); if (ret) return dev_err_probe(dev, ret, "Failed to get phy mode\n"); switch (ethqos->phy_mode) { case PHY_INTERFACE_MODE_RGMII: case PHY_INTERFACE_MODE_RGMII_ID: case PHY_INTERFACE_MODE_RGMII_RXID: case PHY_INTERFACE_MODE_RGMII_TXID: ethqos->configure_func = ethqos_configure_rgmii; break; case PHY_INTERFACE_MODE_SGMII: ethqos->configure_func = ethqos_configure_sgmii; break; default: dev_err(dev, "Unsupported phy mode %s\n", phy_modes(ethqos->phy_mode)); return -EINVAL; } ethqos->pdev = pdev; ethqos->rgmii_base = devm_platform_ioremap_resource_byname(pdev, "rgmii"); if (IS_ERR(ethqos->rgmii_base)) return dev_err_probe(dev, PTR_ERR(ethqos->rgmii_base), "Failed to map rgmii resource\n"); ethqos->mac_base = stmmac_res.addr; data = of_device_get_match_data(dev); ethqos->por = data->por; ethqos->num_por = data->num_por; ethqos->rgmii_config_loopback_en = data->rgmii_config_loopback_en; ethqos->has_emac_ge_3 = data->has_emac_ge_3; ethqos->link_clk = devm_clk_get(dev, data->link_clk_name ?: "rgmii"); if (IS_ERR(ethqos->link_clk)) return dev_err_probe(dev, PTR_ERR(ethqos->link_clk), "Failed to get link_clk\n"); ret = ethqos_clks_config(ethqos, true); if (ret) return ret; ret = devm_add_action_or_reset(dev, ethqos_clks_disable, ethqos); if (ret) return ret; ethqos->serdes_phy = devm_phy_optional_get(dev, "serdes"); if (IS_ERR(ethqos->serdes_phy)) return dev_err_probe(dev, PTR_ERR(ethqos->serdes_phy), "Failed to get serdes phy\n"); ethqos->speed = SPEED_1000; ethqos_update_link_clk(ethqos, SPEED_1000); ethqos_set_func_clk_en(ethqos); plat_dat->bsp_priv = ethqos; plat_dat->fix_mac_speed = ethqos_fix_mac_speed; plat_dat->dump_debug_regs = rgmii_dump; plat_dat->ptp_clk_freq_config = ethqos_ptp_clk_freq_config; plat_dat->has_gmac4 = 1; if (ethqos->has_emac_ge_3) plat_dat->dwmac4_addrs = &data->dwmac4_addrs; plat_dat->pmt = 1; if (of_property_read_bool(np, "snps,tso")) plat_dat->flags |= STMMAC_FLAG_TSO_EN; if (of_device_is_compatible(np, "qcom,qcs404-ethqos")) plat_dat->flags |= STMMAC_FLAG_RX_CLK_RUNS_IN_LPI; if (data->has_integrated_pcs) plat_dat->flags |= STMMAC_FLAG_HAS_INTEGRATED_PCS; if (ethqos->serdes_phy) { plat_dat->serdes_powerup = qcom_ethqos_serdes_powerup; plat_dat->serdes_powerdown = qcom_ethqos_serdes_powerdown; } return devm_stmmac_pltfr_probe(pdev, plat_dat, &stmmac_res); } static const struct of_device_id qcom_ethqos_match[] = { { .compatible = "qcom,qcs404-ethqos", .data = &emac_v2_3_0_data}, { .compatible = "qcom,sa8775p-ethqos", .data = &emac_v4_0_0_data}, { .compatible = "qcom,sc8280xp-ethqos", .data = &emac_v3_0_0_data}, { .compatible = "qcom,sm8150-ethqos", .data = &emac_v2_1_0_data}, { } }; MODULE_DEVICE_TABLE(of, qcom_ethqos_match); static struct platform_driver qcom_ethqos_driver = { .probe = qcom_ethqos_probe, .driver = { .name = "qcom-ethqos", .pm = &stmmac_pltfr_pm_ops, .of_match_table = qcom_ethqos_match, }, }; module_platform_driver(qcom_ethqos_driver); MODULE_DESCRIPTION("Qualcomm ETHQOS driver"); MODULE_LICENSE("GPL v2");
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