Some phys require a phy-supply property that is a phandle to a regulator that needs to be enabled for phy operations. Implement basic supply lookup, enable and disabling, if DM_REGULATOR is available.
Signed-off-by: Eugen Hristev <[email protected]> --- drivers/phy/phy-uclass.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/drivers/phy/phy-uclass.c b/drivers/phy/phy-uclass.c index 3fef5135a9cb..475ac285df05 100644 --- a/drivers/phy/phy-uclass.c +++ b/drivers/phy/phy-uclass.c @@ -12,6 +12,7 @@ #include <dm/devres.h> #include <generic-phy.h> #include <linux/list.h> +#include <power/regulator.h> /** * struct phy_counts - Init and power-on counts of a single PHY port @@ -29,12 +30,14 @@ * without a matching generic_phy_exit() afterwards * @list: Handle for a linked list of these structures corresponding to * ports of the same PHY provider + * @supply: Handle to a phy-supply device */ struct phy_counts { unsigned long id; int power_on_count; int init_count; struct list_head list; + struct udevice *supply; }; static inline struct phy_ops *phy_dev_ops(struct udevice *dev) @@ -224,6 +227,12 @@ int generic_phy_init(struct phy *phy) return 0; } +#if CONFIG_IS_ENABLED(DM_REGULATOR) + device_get_supply_regulator(phy->dev, "phy-supply", &counts->supply); + if (IS_ERR(counts->supply)) + dev_dbg(phy->dev, "no phy-supply property found\n"); +#endif + ret = ops->init(phy); if (ret) dev_err(phy->dev, "PHY: Failed to init %s: %d.\n", @@ -272,6 +281,12 @@ int generic_phy_exit(struct phy *phy) return 0; } +#if CONFIG_IS_ENABLED(DM_REGULATOR) + if (!IS_ERR_OR_NULL(counts->supply)) { + ret = regulator_set_enable(counts->supply, false); + dev_dbg(phy->dev, "supply disable status: %d\n", ret); + } +#endif ret = ops->exit(phy); if (ret) dev_err(phy->dev, "PHY: Failed to exit %s: %d.\n", @@ -300,6 +315,13 @@ int generic_phy_power_on(struct phy *phy) return 0; } +#if CONFIG_IS_ENABLED(DM_REGULATOR) + if (!IS_ERR_OR_NULL(counts->supply)) { + ret = regulator_set_enable(counts->supply, true); + dev_dbg(phy->dev, "supply enable status: %d\n", ret); + } +#endif + ret = ops->power_on(phy); if (ret) dev_err(phy->dev, "PHY: Failed to power on %s: %d.\n", -- 2.34.1
