| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Neil Armstrong | 1375 | 89.87% | 1 | 25.00% |
| Hanjie Lin | 152 | 9.93% | 1 | 25.00% |
| Chunfeng Yun | 2 | 0.13% | 1 | 25.00% |
| Joe Perches | 1 | 0.07% | 1 | 25.00% |
| Total | 1530 | 4 |
// SPDX-License-Identifier: GPL-2.0 /* * Meson G12A USB2 PHY driver * * Copyright (C) 2017 Martin Blumenstingl <martin.blumenstingl@googlemail.com> * Copyright (C) 2017 Amlogic, Inc. All rights reserved * Copyright (C) 2019 BayLibre, SAS * Author: Neil Armstrong <narmstrong@baylibre.com> */ #include <linux/bitfield.h> #include <linux/bitops.h> #include <linux/clk.h> #include <linux/delay.h> #include <linux/io.h> #include <linux/module.h> #include <linux/of_device.h> #include <linux/regmap.h> #include <linux/reset.h> #include <linux/phy/phy.h> #include <linux/platform_device.h> #define PHY_CTRL_R0 0x0 #define PHY_CTRL_R1 0x4 #define PHY_CTRL_R2 0x8 #define PHY_CTRL_R3 0xc #define PHY_CTRL_R3_SQUELCH_REF GENMASK(1, 0) #define PHY_CTRL_R3_HSDIC_REF GENMASK(3, 2) #define PHY_CTRL_R3_DISC_THRESH GENMASK(7, 4) #define PHY_CTRL_R4 0x10 #define PHY_CTRL_R4_CALIB_CODE_7_0 GENMASK(7, 0) #define PHY_CTRL_R4_CALIB_CODE_15_8 GENMASK(15, 8) #define PHY_CTRL_R4_CALIB_CODE_23_16 GENMASK(23, 16) #define PHY_CTRL_R4_I_C2L_CAL_EN BIT(24) #define PHY_CTRL_R4_I_C2L_CAL_RESET_N BIT(25) #define PHY_CTRL_R4_I_C2L_CAL_DONE BIT(26) #define PHY_CTRL_R4_TEST_BYPASS_MODE_EN BIT(27) #define PHY_CTRL_R4_I_C2L_BIAS_TRIM_1_0 GENMASK(29, 28) #define PHY_CTRL_R4_I_C2L_BIAS_TRIM_3_2 GENMASK(31, 30) #define PHY_CTRL_R5 0x14 #define PHY_CTRL_R6 0x18 #define PHY_CTRL_R7 0x1c #define PHY_CTRL_R8 0x20 #define PHY_CTRL_R9 0x24 #define PHY_CTRL_R10 0x28 #define PHY_CTRL_R11 0x2c #define PHY_CTRL_R12 0x30 #define PHY_CTRL_R13 0x34 #define PHY_CTRL_R13_CUSTOM_PATTERN_19 GENMASK(7, 0) #define PHY_CTRL_R13_LOAD_STAT BIT(14) #define PHY_CTRL_R13_UPDATE_PMA_SIGNALS BIT(15) #define PHY_CTRL_R13_MIN_COUNT_FOR_SYNC_DET GENMASK(20, 16) #define PHY_CTRL_R13_CLEAR_HOLD_HS_DISCONNECT BIT(21) #define PHY_CTRL_R13_BYPASS_HOST_DISCONNECT_VAL BIT(22) #define PHY_CTRL_R13_BYPASS_HOST_DISCONNECT_EN BIT(23) #define PHY_CTRL_R13_I_C2L_HS_EN BIT(24) #define PHY_CTRL_R13_I_C2L_FS_EN BIT(25) #define PHY_CTRL_R13_I_C2L_LS_EN BIT(26) #define PHY_CTRL_R13_I_C2L_HS_OE BIT(27) #define PHY_CTRL_R13_I_C2L_FS_OE BIT(28) #define PHY_CTRL_R13_I_C2L_HS_RX_EN BIT(29) #define PHY_CTRL_R13_I_C2L_FSLS_RX_EN BIT(30) #define PHY_CTRL_R14 0x38 #define PHY_CTRL_R14_I_RDP_EN BIT(0) #define PHY_CTRL_R14_I_RPU_SW1_EN BIT(1) #define PHY_CTRL_R14_I_RPU_SW2_EN GENMASK(3, 2) #define PHY_CTRL_R14_PG_RSTN BIT(4) #define PHY_CTRL_R14_I_C2L_DATA_16_8 BIT(5) #define PHY_CTRL_R14_I_C2L_ASSERT_SINGLE_EN_ZERO BIT(6) #define PHY_CTRL_R14_BYPASS_CTRL_7_0 GENMASK(15, 8) #define PHY_CTRL_R14_BYPASS_CTRL_15_8 GENMASK(23, 16) #define PHY_CTRL_R15 0x3c #define PHY_CTRL_R16 0x40 #define PHY_CTRL_R16_MPLL_M GENMASK(8, 0) #define PHY_CTRL_R16_MPLL_N GENMASK(14, 10) #define PHY_CTRL_R16_MPLL_TDC_MODE BIT(20) #define PHY_CTRL_R16_MPLL_SDM_EN BIT(21) #define PHY_CTRL_R16_MPLL_LOAD BIT(22) #define PHY_CTRL_R16_MPLL_DCO_SDM_EN BIT(23) #define PHY_CTRL_R16_MPLL_LOCK_LONG GENMASK(25, 24) #define PHY_CTRL_R16_MPLL_LOCK_F BIT(26) #define PHY_CTRL_R16_MPLL_FAST_LOCK BIT(27) #define PHY_CTRL_R16_MPLL_EN BIT(28) #define PHY_CTRL_R16_MPLL_RESET BIT(29) #define PHY_CTRL_R16_MPLL_LOCK BIT(30) #define PHY_CTRL_R16_MPLL_LOCK_DIG BIT(31) #define PHY_CTRL_R17 0x44 #define PHY_CTRL_R17_MPLL_FRAC_IN GENMASK(13, 0) #define PHY_CTRL_R17_MPLL_FIX_EN BIT(16) #define PHY_CTRL_R17_MPLL_LAMBDA1 GENMASK(19, 17) #define PHY_CTRL_R17_MPLL_LAMBDA0 GENMASK(22, 20) #define PHY_CTRL_R17_MPLL_FILTER_MODE BIT(23) #define PHY_CTRL_R17_MPLL_FILTER_PVT2 GENMASK(27, 24) #define PHY_CTRL_R17_MPLL_FILTER_PVT1 GENMASK(31, 28) #define PHY_CTRL_R18 0x48 #define PHY_CTRL_R18_MPLL_LKW_SEL GENMASK(1, 0) #define PHY_CTRL_R18_MPLL_LK_W GENMASK(5, 2) #define PHY_CTRL_R18_MPLL_LK_S GENMASK(11, 6) #define PHY_CTRL_R18_MPLL_DCO_M_EN BIT(12) #define PHY_CTRL_R18_MPLL_DCO_CLK_SEL BIT(13) #define PHY_CTRL_R18_MPLL_PFD_GAIN GENMASK(15, 14) #define PHY_CTRL_R18_MPLL_ROU GENMASK(18, 16) #define PHY_CTRL_R18_MPLL_DATA_SEL GENMASK(21, 19) #define PHY_CTRL_R18_MPLL_BIAS_ADJ GENMASK(23, 22) #define PHY_CTRL_R18_MPLL_BB_MODE GENMASK(25, 24) #define PHY_CTRL_R18_MPLL_ALPHA GENMASK(28, 26) #define PHY_CTRL_R18_MPLL_ADJ_LDO GENMASK(30, 29) #define PHY_CTRL_R18_MPLL_ACG_RANGE BIT(31) #define PHY_CTRL_R19 0x4c #define PHY_CTRL_R20 0x50 #define PHY_CTRL_R20_USB2_IDDET_EN BIT(0) #define PHY_CTRL_R20_USB2_OTG_VBUS_TRIM_2_0 GENMASK(3, 1) #define PHY_CTRL_R20_USB2_OTG_VBUSDET_EN BIT(4) #define PHY_CTRL_R20_USB2_AMON_EN BIT(5) #define PHY_CTRL_R20_USB2_CAL_CODE_R5 BIT(6) #define PHY_CTRL_R20_BYPASS_OTG_DET BIT(7) #define PHY_CTRL_R20_USB2_DMON_EN BIT(8) #define PHY_CTRL_R20_USB2_DMON_SEL_3_0 GENMASK(12, 9) #define PHY_CTRL_R20_USB2_EDGE_DRV_EN BIT(13) #define PHY_CTRL_R20_USB2_EDGE_DRV_TRIM_1_0 GENMASK(15, 14) #define PHY_CTRL_R20_USB2_BGR_ADJ_4_0 GENMASK(20, 16) #define PHY_CTRL_R20_USB2_BGR_START BIT(21) #define PHY_CTRL_R20_USB2_BGR_VREF_4_0 GENMASK(28, 24) #define PHY_CTRL_R20_USB2_BGR_DBG_1_0 GENMASK(30, 29) #define PHY_CTRL_R20_BYPASS_CAL_DONE_R5 BIT(31) #define PHY_CTRL_R21 0x54 #define PHY_CTRL_R21_USB2_BGR_FORCE BIT(0) #define PHY_CTRL_R21_USB2_CAL_ACK_EN BIT(1) #define PHY_CTRL_R21_USB2_OTG_ACA_EN BIT(2) #define PHY_CTRL_R21_USB2_TX_STRG_PD BIT(3) #define PHY_CTRL_R21_USB2_OTG_ACA_TRIM_1_0 GENMASK(5, 4) #define PHY_CTRL_R21_BYPASS_UTMI_CNTR GENMASK(15, 6) #define PHY_CTRL_R21_BYPASS_UTMI_REG GENMASK(25, 20) #define PHY_CTRL_R22 0x58 #define PHY_CTRL_R23 0x5c #define RESET_COMPLETE_TIME 1000 #define PLL_RESET_COMPLETE_TIME 100 enum meson_soc_id { MESON_SOC_G12A = 0, MESON_SOC_A1, }; struct phy_meson_g12a_usb2_priv { struct device *dev; struct regmap *regmap; struct clk *clk; struct reset_control *reset; int soc_id; }; static const struct regmap_config phy_meson_g12a_usb2_regmap_conf = { .reg_bits = 8, .val_bits = 32, .reg_stride = 4, .max_register = PHY_CTRL_R23, }; static int phy_meson_g12a_usb2_init(struct phy *phy) { struct phy_meson_g12a_usb2_priv *priv = phy_get_drvdata(phy); int ret; unsigned int value; ret = reset_control_reset(priv->reset); if (ret) return ret; udelay(RESET_COMPLETE_TIME); /* usb2_otg_aca_en == 0 */ regmap_update_bits(priv->regmap, PHY_CTRL_R21, PHY_CTRL_R21_USB2_OTG_ACA_EN, 0); /* PLL Setup : 24MHz * 20 / 1 = 480MHz */ regmap_write(priv->regmap, PHY_CTRL_R16, FIELD_PREP(PHY_CTRL_R16_MPLL_M, 20) | FIELD_PREP(PHY_CTRL_R16_MPLL_N, 1) | PHY_CTRL_R16_MPLL_LOAD | FIELD_PREP(PHY_CTRL_R16_MPLL_LOCK_LONG, 1) | PHY_CTRL_R16_MPLL_FAST_LOCK | PHY_CTRL_R16_MPLL_EN | PHY_CTRL_R16_MPLL_RESET); regmap_write(priv->regmap, PHY_CTRL_R17, FIELD_PREP(PHY_CTRL_R17_MPLL_FRAC_IN, 0) | FIELD_PREP(PHY_CTRL_R17_MPLL_LAMBDA1, 7) | FIELD_PREP(PHY_CTRL_R17_MPLL_LAMBDA0, 7) | FIELD_PREP(PHY_CTRL_R17_MPLL_FILTER_PVT2, 2) | FIELD_PREP(PHY_CTRL_R17_MPLL_FILTER_PVT1, 9)); value = FIELD_PREP(PHY_CTRL_R18_MPLL_LKW_SEL, 1) | FIELD_PREP(PHY_CTRL_R18_MPLL_LK_W, 9) | FIELD_PREP(PHY_CTRL_R18_MPLL_LK_S, 0x27) | FIELD_PREP(PHY_CTRL_R18_MPLL_PFD_GAIN, 1) | FIELD_PREP(PHY_CTRL_R18_MPLL_ROU, 7) | FIELD_PREP(PHY_CTRL_R18_MPLL_DATA_SEL, 3) | FIELD_PREP(PHY_CTRL_R18_MPLL_BIAS_ADJ, 1) | FIELD_PREP(PHY_CTRL_R18_MPLL_BB_MODE, 0) | FIELD_PREP(PHY_CTRL_R18_MPLL_ALPHA, 3) | FIELD_PREP(PHY_CTRL_R18_MPLL_ADJ_LDO, 1) | PHY_CTRL_R18_MPLL_ACG_RANGE; if (priv->soc_id == MESON_SOC_A1) value |= PHY_CTRL_R18_MPLL_DCO_CLK_SEL; regmap_write(priv->regmap, PHY_CTRL_R18, value); udelay(PLL_RESET_COMPLETE_TIME); /* UnReset PLL */ regmap_write(priv->regmap, PHY_CTRL_R16, FIELD_PREP(PHY_CTRL_R16_MPLL_M, 20) | FIELD_PREP(PHY_CTRL_R16_MPLL_N, 1) | PHY_CTRL_R16_MPLL_LOAD | FIELD_PREP(PHY_CTRL_R16_MPLL_LOCK_LONG, 1) | PHY_CTRL_R16_MPLL_FAST_LOCK | PHY_CTRL_R16_MPLL_EN); /* PHY Tuning */ regmap_write(priv->regmap, PHY_CTRL_R20, FIELD_PREP(PHY_CTRL_R20_USB2_OTG_VBUS_TRIM_2_0, 4) | PHY_CTRL_R20_USB2_OTG_VBUSDET_EN | FIELD_PREP(PHY_CTRL_R20_USB2_DMON_SEL_3_0, 15) | PHY_CTRL_R20_USB2_EDGE_DRV_EN | FIELD_PREP(PHY_CTRL_R20_USB2_EDGE_DRV_TRIM_1_0, 3) | FIELD_PREP(PHY_CTRL_R20_USB2_BGR_ADJ_4_0, 0) | FIELD_PREP(PHY_CTRL_R20_USB2_BGR_VREF_4_0, 0) | FIELD_PREP(PHY_CTRL_R20_USB2_BGR_DBG_1_0, 0)); if (priv->soc_id == MESON_SOC_G12A) regmap_write(priv->regmap, PHY_CTRL_R4, FIELD_PREP(PHY_CTRL_R4_CALIB_CODE_7_0, 0xf) | FIELD_PREP(PHY_CTRL_R4_CALIB_CODE_15_8, 0xf) | FIELD_PREP(PHY_CTRL_R4_CALIB_CODE_23_16, 0xf) | PHY_CTRL_R4_TEST_BYPASS_MODE_EN | FIELD_PREP(PHY_CTRL_R4_I_C2L_BIAS_TRIM_1_0, 0) | FIELD_PREP(PHY_CTRL_R4_I_C2L_BIAS_TRIM_3_2, 0)); else if (priv->soc_id == MESON_SOC_A1) { regmap_write(priv->regmap, PHY_CTRL_R21, PHY_CTRL_R21_USB2_CAL_ACK_EN | PHY_CTRL_R21_USB2_TX_STRG_PD | FIELD_PREP(PHY_CTRL_R21_USB2_OTG_ACA_TRIM_1_0, 2)); /* Analog Settings */ regmap_write(priv->regmap, PHY_CTRL_R13, FIELD_PREP(PHY_CTRL_R13_MIN_COUNT_FOR_SYNC_DET, 7)); } /* Tuning Disconnect Threshold */ regmap_write(priv->regmap, PHY_CTRL_R3, FIELD_PREP(PHY_CTRL_R3_SQUELCH_REF, 0) | FIELD_PREP(PHY_CTRL_R3_HSDIC_REF, 1) | FIELD_PREP(PHY_CTRL_R3_DISC_THRESH, 3)); if (priv->soc_id == MESON_SOC_G12A) { /* Analog Settings */ regmap_write(priv->regmap, PHY_CTRL_R14, 0); regmap_write(priv->regmap, PHY_CTRL_R13, PHY_CTRL_R13_UPDATE_PMA_SIGNALS | FIELD_PREP(PHY_CTRL_R13_MIN_COUNT_FOR_SYNC_DET, 7)); } return 0; } static int phy_meson_g12a_usb2_exit(struct phy *phy) { struct phy_meson_g12a_usb2_priv *priv = phy_get_drvdata(phy); return reset_control_reset(priv->reset); } /* set_mode is not needed, mode setting is handled via the UTMI bus */ static const struct phy_ops phy_meson_g12a_usb2_ops = { .init = phy_meson_g12a_usb2_init, .exit = phy_meson_g12a_usb2_exit, .owner = THIS_MODULE, }; static int phy_meson_g12a_usb2_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct phy_provider *phy_provider; struct phy_meson_g12a_usb2_priv *priv; struct phy *phy; void __iomem *base; int ret; priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; priv->dev = dev; platform_set_drvdata(pdev, priv); base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(base)) return PTR_ERR(base); priv->soc_id = (enum meson_soc_id)of_device_get_match_data(&pdev->dev); priv->regmap = devm_regmap_init_mmio(dev, base, &phy_meson_g12a_usb2_regmap_conf); if (IS_ERR(priv->regmap)) return PTR_ERR(priv->regmap); priv->clk = devm_clk_get(dev, "xtal"); if (IS_ERR(priv->clk)) return PTR_ERR(priv->clk); priv->reset = devm_reset_control_get(dev, "phy"); if (IS_ERR(priv->reset)) return PTR_ERR(priv->reset); ret = reset_control_deassert(priv->reset); if (ret) return ret; phy = devm_phy_create(dev, NULL, &phy_meson_g12a_usb2_ops); if (IS_ERR(phy)) { ret = PTR_ERR(phy); if (ret != -EPROBE_DEFER) dev_err(dev, "failed to create PHY\n"); return ret; } phy_set_bus_width(phy, 8); phy_set_drvdata(phy, priv); phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); return PTR_ERR_OR_ZERO(phy_provider); } static const struct of_device_id phy_meson_g12a_usb2_of_match[] = { { .compatible = "amlogic,g12a-usb2-phy", .data = (void *)MESON_SOC_G12A, }, { .compatible = "amlogic,a1-usb2-phy", .data = (void *)MESON_SOC_A1, }, { /* Sentinel */ } }; MODULE_DEVICE_TABLE(of, phy_meson_g12a_usb2_of_match); static struct platform_driver phy_meson_g12a_usb2_driver = { .probe = phy_meson_g12a_usb2_probe, .driver = { .name = "phy-meson-g12a-usb2", .of_match_table = phy_meson_g12a_usb2_of_match, }, }; module_platform_driver(phy_meson_g12a_usb2_driver); MODULE_AUTHOR("Martin Blumenstingl <martin.blumenstingl@googlemail.com>"); MODULE_AUTHOR("Neil Armstrong <narmstrong@baylibre.com>"); MODULE_DESCRIPTION("Meson G12A USB2 PHY driver"); MODULE_LICENSE("GPL v2");
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