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| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2020-11-20 09:56:36 +0100 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2020-11-30 16:20:59 +0530 |
| commit | 81b534f7e9b27309b99ac2b870518c17381d2912 (patch) | |
| tree | 487f2193b4dd2601c804773b7d8a0c7f1112d472 /drivers/phy/samsung/phy-exynos5250-usb2.c | |
| parent | 53e7c92c7fa0077f507951206bb329aadab785fb (diff) | |
| download | lwn-81b534f7e9b27309b99ac2b870518c17381d2912.tar.gz lwn-81b534f7e9b27309b99ac2b870518c17381d2912.zip | |
phy: samsung: Add support for the Exynos5420 variant of the USB2 PHY
Exynos5420 differs a bit from Exynos5250 in USB2 PHY related registers in
the PMU region. Add a variant for the Exynos5420 case. Till now, USB2 PHY
worked only because the bootloader enabled the PHY, but then driver messed
USB 3.0 DRD related registers during the suspend/resume cycle.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201120085637.7299-2-m.szyprowski@samsung.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/phy/samsung/phy-exynos5250-usb2.c')
| -rw-r--r-- | drivers/phy/samsung/phy-exynos5250-usb2.c | 48 |
1 files changed, 34 insertions, 14 deletions
diff --git a/drivers/phy/samsung/phy-exynos5250-usb2.c b/drivers/phy/samsung/phy-exynos5250-usb2.c index 4f53b711fd6f..e198010e1bfd 100644 --- a/drivers/phy/samsung/phy-exynos5250-usb2.c +++ b/drivers/phy/samsung/phy-exynos5250-usb2.c @@ -117,9 +117,9 @@ /* Isolation, configured in the power management unit */ #define EXYNOS_5250_USB_ISOL_OTG_OFFSET 0x704 -#define EXYNOS_5250_USB_ISOL_OTG BIT(0) #define EXYNOS_5250_USB_ISOL_HOST_OFFSET 0x708 -#define EXYNOS_5250_USB_ISOL_HOST BIT(0) +#define EXYNOS_5420_USB_ISOL_HOST_OFFSET 0x70C +#define EXYNOS_5250_USB_ISOL_ENABLE BIT(0) /* Mode swtich register */ #define EXYNOS_5250_MODE_SWITCH_OFFSET 0x230 @@ -132,7 +132,6 @@ enum exynos4x12_phy_id { EXYNOS5250_HOST, EXYNOS5250_HSIC0, EXYNOS5250_HSIC1, - EXYNOS5250_NUM_PHYS, }; /* @@ -176,20 +175,19 @@ static void exynos5250_isol(struct samsung_usb2_phy_instance *inst, bool on) { struct samsung_usb2_phy_driver *drv = inst->drv; u32 offset; - u32 mask; + u32 mask = EXYNOS_5250_USB_ISOL_ENABLE; - switch (inst->cfg->id) { - case EXYNOS5250_DEVICE: + if (drv->cfg == &exynos5250_usb2_phy_config && + inst->cfg->id == EXYNOS5250_DEVICE) offset = EXYNOS_5250_USB_ISOL_OTG_OFFSET; - mask = EXYNOS_5250_USB_ISOL_OTG; - break; - case EXYNOS5250_HOST: + else if (drv->cfg == &exynos5250_usb2_phy_config && + inst->cfg->id == EXYNOS5250_HOST) offset = EXYNOS_5250_USB_ISOL_HOST_OFFSET; - mask = EXYNOS_5250_USB_ISOL_HOST; - break; - default: + else if (drv->cfg == &exynos5420_usb2_phy_config && + inst->cfg->id == EXYNOS5250_HOST) + offset = EXYNOS_5420_USB_ISOL_HOST_OFFSET; + else return; - } regmap_update_bits(drv->reg_pmu, offset, mask, on ? 0 : mask); } @@ -390,9 +388,31 @@ static const struct samsung_usb2_common_phy exynos5250_phys[] = { }, }; +static const struct samsung_usb2_common_phy exynos5420_phys[] = { + { + .label = "host", + .id = EXYNOS5250_HOST, + .power_on = exynos5250_power_on, + .power_off = exynos5250_power_off, + }, + { + .label = "hsic", + .id = EXYNOS5250_HSIC0, + .power_on = exynos5250_power_on, + .power_off = exynos5250_power_off, + }, +}; + const struct samsung_usb2_phy_config exynos5250_usb2_phy_config = { .has_mode_switch = 1, - .num_phys = EXYNOS5250_NUM_PHYS, + .num_phys = ARRAY_SIZE(exynos5250_phys), .phys = exynos5250_phys, .rate_to_clk = exynos5250_rate_to_clk, }; + +const struct samsung_usb2_phy_config exynos5420_usb2_phy_config = { + .has_mode_switch = 1, + .num_phys = ARRAY_SIZE(exynos5420_phys), + .phys = exynos5420_phys, + .rate_to_clk = exynos5250_rate_to_clk, +}; |