diff --git a/drivers/phy/samsung/phy-exynos5-usbdrd.c b/drivers/phy/samsung/phy-exynos5-usbdrd.c index 7416d2e1e358..5bbf78d44a74 100644 --- a/drivers/phy/samsung/phy-exynos5-usbdrd.c +++ b/drivers/phy/samsung/phy-exynos5-usbdrd.c @@ -41,6 +41,13 @@ #define EXYNOS2200_CLKRST_LINK_PCLK_SEL BIT(1) #define EXYNOS2200_DRD_UTMI 0x10 + +/* ExynosAutov920 bits */ +#define UTMICTL_FORCE_UTMI_SUSPEND BIT(13) +#define UTMICTL_FORCE_UTMI_SLEEP BIT(12) +#define UTMICTL_FORCE_DPPULLDOWN BIT(9) +#define UTMICTL_FORCE_DMPULLDOWN BIT(8) + #define EXYNOS2200_UTMI_FORCE_VBUSVALID BIT(1) #define EXYNOS2200_UTMI_FORCE_BVALID BIT(0) @@ -250,6 +257,22 @@ #define EXYNOS850_DRD_HSP_TEST 0x5c #define HSP_TEST_SIDDQ BIT(24) +#define EXYNOSAUTOV920_DRD_HSP_CLKRST 0x100 +#define HSPCLKRST_PHY20_SW_PORTRESET BIT(3) +#define HSPCLKRST_PHY20_SW_POR BIT(1) +#define HSPCLKRST_PHY20_SW_POR_SEL BIT(0) + +#define EXYNOSAUTOV920_DRD_HSPCTL 0x104 +#define HSPCTRL_VBUSVLDEXTSEL BIT(13) +#define HSPCTRL_VBUSVLDEXT BIT(12) +#define HSPCTRL_EN_UTMISUSPEND BIT(9) +#define HSPCTRL_COMMONONN BIT(8) + +#define EXYNOSAUTOV920_DRD_HSP_TEST 0x10c + +#define EXYNOSAUTOV920_DRD_HSPPLLTUNE 0x110 +#define HSPPLLTUNE_FSEL GENMASK(18, 16) + /* Exynos9 - GS101 */ #define EXYNOS850_DRD_SECPMACTL 0x48 #define SECPMACTL_PMA_ROPLL_REF_CLK_SEL GENMASK(13, 12) @@ -2054,6 +2077,140 @@ static const struct exynos5_usbdrd_phy_drvdata exynos990_usbdrd_phy = { .n_regulators = ARRAY_SIZE(exynos5_regulator_names), }; +static void +exynosautov920_usbdrd_utmi_init(struct exynos5_usbdrd_phy *phy_drd) +{ + void __iomem *reg_phy = phy_drd->reg_phy; + u32 reg; + + /* + * Disable HWACG (hardware auto clock gating control). This + * forces QACTIVE signal in Q-Channel interface to HIGH level, + * to make sure the PHY clock is not gated by the hardware. + */ + reg = readl(reg_phy + EXYNOS850_DRD_LINKCTRL); + reg |= LINKCTRL_FORCE_QACT; + writel(reg, reg_phy + EXYNOS850_DRD_LINKCTRL); + + /* De-assert link reset */ + reg = readl(reg_phy + EXYNOS2200_DRD_CLKRST); + reg &= ~CLKRST_LINK_SW_RST; + writel(reg, reg_phy + EXYNOS2200_DRD_CLKRST); + + /* Set PHY POR High */ + reg = readl(reg_phy + EXYNOSAUTOV920_DRD_HSP_CLKRST); + reg |= HSPCLKRST_PHY20_SW_POR | HSPCLKRST_PHY20_SW_POR_SEL; + writel(reg, reg_phy + EXYNOSAUTOV920_DRD_HSP_CLKRST); + + /* Enable UTMI+ */ + reg = readl(reg_phy + EXYNOS2200_DRD_UTMI); + reg &= ~(UTMICTL_FORCE_UTMI_SUSPEND | UTMICTL_FORCE_UTMI_SLEEP | + UTMICTL_FORCE_DPPULLDOWN | UTMICTL_FORCE_DMPULLDOWN); + writel(reg, reg_phy + EXYNOS2200_DRD_UTMI); + + /* set phy clock & control HS phy */ + reg = readl(reg_phy + EXYNOSAUTOV920_DRD_HSPCTL); + reg |= HSPCTRL_EN_UTMISUSPEND | HSPCTRL_COMMONONN; + writel(reg, reg_phy + EXYNOSAUTOV920_DRD_HSPCTL); + + fsleep(100); + + /* Set VBUS Valid and DP-Pull up control by VBUS pad usage */ + reg = readl(reg_phy + EXYNOS850_DRD_LINKCTRL); + reg |= FIELD_PREP_CONST(LINKCTRL_BUS_FILTER_BYPASS, 0xf); + writel(reg, reg_phy + EXYNOS850_DRD_LINKCTRL); + + reg = readl(reg_phy + EXYNOS2200_DRD_UTMI); + reg |= EXYNOS2200_UTMI_FORCE_VBUSVALID | EXYNOS2200_UTMI_FORCE_BVALID; + writel(reg, reg_phy + EXYNOS2200_DRD_UTMI); + + reg = readl(reg_phy + EXYNOSAUTOV920_DRD_HSPCTL); + reg |= HSPCTRL_VBUSVLDEXTSEL | HSPCTRL_VBUSVLDEXT; + writel(reg, reg_phy + EXYNOSAUTOV920_DRD_HSPCTL); + + /* Setting FSEL for refference clock */ + reg = readl(reg_phy + EXYNOSAUTOV920_DRD_HSPPLLTUNE); + reg &= ~HSPPLLTUNE_FSEL; + + switch (phy_drd->extrefclk) { + case EXYNOS5_FSEL_50MHZ: + reg |= FIELD_PREP(HSPPLLTUNE_FSEL, 7); + break; + case EXYNOS5_FSEL_26MHZ: + reg |= FIELD_PREP(HSPPLLTUNE_FSEL, 6); + break; + case EXYNOS5_FSEL_24MHZ: + reg |= FIELD_PREP(HSPPLLTUNE_FSEL, 2); + break; + case EXYNOS5_FSEL_20MHZ: + reg |= FIELD_PREP(HSPPLLTUNE_FSEL, 1); + break; + case EXYNOS5_FSEL_19MHZ2: + reg |= FIELD_PREP(HSPPLLTUNE_FSEL, 0); + break; + default: + dev_warn(phy_drd->dev, "unsupported ref clk: %#.2x\n", + phy_drd->extrefclk); + break; + } + writel(reg, reg_phy + EXYNOSAUTOV920_DRD_HSPPLLTUNE); + + /* Enable PHY Power Mode */ + reg = readl(reg_phy + EXYNOSAUTOV920_DRD_HSP_TEST); + reg &= ~HSP_TEST_SIDDQ; + writel(reg, reg_phy + EXYNOSAUTOV920_DRD_HSP_TEST); + + /* before POR low, 10us delay is needed to Finish PHY reset */ + fsleep(10); + + /* Set PHY POR Low */ + reg = readl(reg_phy + EXYNOSAUTOV920_DRD_HSP_CLKRST); + reg |= HSPCLKRST_PHY20_SW_POR_SEL; + reg &= ~(HSPCLKRST_PHY20_SW_POR | HSPCLKRST_PHY20_SW_PORTRESET); + writel(reg, reg_phy + EXYNOSAUTOV920_DRD_HSP_CLKRST); + + /* after POR low and delay 75us, PHYCLOCK is guaranteed. */ + fsleep(75); + + /* force pipe3 signal for link */ + reg = readl(reg_phy + EXYNOS850_DRD_LINKCTRL); + reg |= LINKCTRL_FORCE_PIPE_EN; + reg &= ~LINKCTRL_FORCE_PHYSTATUS; + reg |= LINKCTRL_FORCE_RXELECIDLE; + writel(reg, reg_phy + EXYNOS850_DRD_LINKCTRL); +} + +static void +exynosautov920_usbdrd_hsphy_disable(struct exynos5_usbdrd_phy *phy_drd) +{ + u32 reg; + void __iomem *reg_phy = phy_drd->reg_phy; + + /* set phy clock & control HS phy */ + reg = readl(reg_phy + EXYNOS2200_DRD_UTMI); + reg |= UTMICTL_FORCE_UTMI_SUSPEND | UTMICTL_FORCE_UTMI_SLEEP; + reg &= ~(UTMICTL_FORCE_DPPULLDOWN | UTMICTL_FORCE_DMPULLDOWN); + writel(reg, reg_phy + EXYNOS2200_DRD_UTMI); + + /* Disable PHY Power Mode */ + reg = readl(reg_phy + EXYNOSAUTOV920_DRD_HSP_TEST); + reg |= HSP_TEST_SIDDQ; + writel(reg, reg_phy + EXYNOSAUTOV920_DRD_HSP_TEST); + + /* clear force q-channel */ + reg = readl(reg_phy + EXYNOS850_DRD_LINKCTRL); + reg &= ~LINKCTRL_FORCE_QACT; + writel(reg, reg_phy + EXYNOS850_DRD_LINKCTRL); + + /* link sw reset is need for USB_DP/DM high-z in host mode */ + reg = readl(reg_phy + EXYNOS2200_DRD_CLKRST); + reg |= CLKRST_LINK_SW_RST; + writel(reg, reg_phy + EXYNOS2200_DRD_CLKRST); + fsleep(10); + reg &= ~CLKRST_LINK_SW_RST; + writel(reg, reg_phy + EXYNOS2200_DRD_CLKRST); +} + static int exynosautov920_usbdrd_phy_init(struct phy *phy) { struct phy_usb_instance *inst = phy_get_drvdata(phy); @@ -2095,6 +2252,27 @@ static int exynosautov920_usbdrd_phy_exit(struct phy *phy) return 0; } +static int exynosautov920_usbdrd_combo_phy_exit(struct phy *phy) +{ + struct phy_usb_instance *inst = phy_get_drvdata(phy); + struct exynos5_usbdrd_phy *phy_drd = to_usbdrd_phy(inst); + int ret = 0; + + ret = clk_bulk_prepare_enable(phy_drd->drv_data->n_clks, phy_drd->clks); + if (ret) + return ret; + + if (inst->phy_cfg->id == EXYNOS5_DRDPHY_UTMI) + exynosautov920_usbdrd_hsphy_disable(phy_drd); + + /* enable PHY isol */ + inst->phy_cfg->phy_isol(inst, true); + + clk_bulk_disable_unprepare(phy_drd->drv_data->n_clks, phy_drd->clks); + + return 0; +} + static int exynosautov920_usbdrd_phy_power_on(struct phy *phy) { struct phy_usb_instance *inst = phy_get_drvdata(phy); @@ -2146,6 +2324,36 @@ static const char * const exynosautov920_usb20_regulators[] = { "dvdd", "vdd18", "vdd33", }; +static const struct phy_ops exynosautov920_usbdrd_combo_hsphy_ops = { + .init = exynosautov920_usbdrd_phy_init, + .exit = exynosautov920_usbdrd_combo_phy_exit, + .power_on = exynosautov920_usbdrd_phy_power_on, + .power_off = exynosautov920_usbdrd_phy_power_off, + .owner = THIS_MODULE, +}; + +static const struct +exynos5_usbdrd_phy_config usbdrd_hsphy_cfg_exynosautov920[] = { + { + .id = EXYNOS5_DRDPHY_UTMI, + .phy_isol = exynos5_usbdrd_phy_isol, + .phy_init = exynosautov920_usbdrd_utmi_init, + }, +}; + +static const +struct exynos5_usbdrd_phy_drvdata exynosautov920_usbdrd_combo_hsphy = { + .phy_cfg = usbdrd_hsphy_cfg_exynosautov920, + .phy_ops = &exynosautov920_usbdrd_combo_hsphy_ops, + .pmu_offset_usbdrd0_phy = EXYNOSAUTOV920_PHY_CTRL_USB20, + .clk_names = exynos5_clk_names, + .n_clks = ARRAY_SIZE(exynos5_clk_names), + .core_clk_names = exynos5_core_clk_names, + .n_core_clks = ARRAY_SIZE(exynos5_core_clk_names), + .regulator_names = exynosautov920_usb20_regulators, + .n_regulators = ARRAY_SIZE(exynosautov920_usb20_regulators), +}; + static const struct phy_ops exynosautov920_usbdrd_phy_ops = { .init = exynosautov920_usbdrd_phy_init, .exit = exynosautov920_usbdrd_phy_exit, @@ -2380,6 +2588,9 @@ static const struct of_device_id exynos5_usbdrd_phy_of_match[] = { }, { .compatible = "samsung,exynos990-usbdrd-phy", .data = &exynos990_usbdrd_phy + }, { + .compatible = "samsung,exynosautov920-usbdrd-combo-hsphy", + .data = &exynosautov920_usbdrd_combo_hsphy }, { .compatible = "samsung,exynosautov920-usbdrd-phy", .data = &exynosautov920_usbdrd_phy