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| author | Samuel Holland <samuel@sholland.org> | 2021-09-12 09:22:42 -0500 |
|---|---|---|
| committer | Andre Przywara <andre.przywara@arm.com> | 2021-10-25 14:49:28 +0100 |
| commit | 6fa41cdd19b93b27483f071f96da8b66bebd7a37 (patch) | |
| tree | fc2c4247911e1867af35ca49a0cb4ecb932175df | |
| parent | 1da7b88cade196434b84e701c1dadcd3b37c97bc (diff) | |
| download | u-boot-6fa41cdd19b93b27483f071f96da8b66bebd7a37.zip u-boot-6fa41cdd19b93b27483f071f96da8b66bebd7a37.tar.gz u-boot-6fa41cdd19b93b27483f071f96da8b66bebd7a37.tar.bz2 | |
phy: sun4i-usb: Support VBUS detection via power supply
The device tree binding provides for getting VBUS state from a device
referenced by phandle, as an optional alternative to using a GPIO. In
U-Boot, where there is no power supply class, this VBUS detection will
be implemented using a regulator device and its get_enable method.
Let's hook this up to the PHY driver.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Acked-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
| -rw-r--r-- | drivers/phy/allwinner/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/phy/allwinner/phy-sun4i-usb.c | 7 |
2 files changed, 8 insertions, 0 deletions
diff --git a/drivers/phy/allwinner/Kconfig b/drivers/phy/allwinner/Kconfig index 6bfb79c..d3ff82f 100644 --- a/drivers/phy/allwinner/Kconfig +++ b/drivers/phy/allwinner/Kconfig @@ -4,6 +4,7 @@ config PHY_SUN4I_USB bool "Allwinner Sun4I USB PHY driver" depends on ARCH_SUNXI + select DM_REGULATOR select PHY help Enable this to support the transceiver that is part of Allwinner diff --git a/drivers/phy/allwinner/phy-sun4i-usb.c b/drivers/phy/allwinner/phy-sun4i-usb.c index 827ecd7..ab2a5d1 100644 --- a/drivers/phy/allwinner/phy-sun4i-usb.c +++ b/drivers/phy/allwinner/phy-sun4i-usb.c @@ -26,6 +26,7 @@ #include <linux/bitops.h> #include <linux/delay.h> #include <linux/err.h> +#include <power/regulator.h> #define REG_ISCR 0x00 #define REG_PHYCTL_A10 0x04 @@ -137,6 +138,7 @@ struct sun4i_usb_phy_data { void __iomem *base; const struct sun4i_usb_phy_cfg *cfg; struct sun4i_usb_phy_plat *usb_phy; + struct udevice *vbus_power_supply; }; static int initial_usb_scan_delay = CONFIG_INITIAL_USB_SCAN_DELAY; @@ -404,6 +406,8 @@ int sun4i_usb_phy_vbus_detect(struct phy *phy) mdelay(100); err = gpio_get_value(usb_phy->gpio_vbus_det); } + } else if (data->vbus_power_supply) { + err = regulator_get_enable(data->vbus_power_supply); } return err; @@ -447,6 +451,9 @@ static int sun4i_usb_phy_probe(struct udevice *dev) if (IS_ERR(data->base)) return PTR_ERR(data->base); + device_get_supply_regulator(dev, "usb0_vbus_power-supply", + &data->vbus_power_supply); + data->usb_phy = plat; for (i = 0; i < data->cfg->num_phys; i++) { struct sun4i_usb_phy_plat *phy = &plat[i]; |