The patch adds a pair of APIs that allow the generic PHY subsystem to provide information on the maximum value of link rate supported by the PHY. The PHY provider driver may use phy_set_max_link_rate() to set the maximum link rate that the PHY supports. The controller driver may then use phy_get_max_link_rate() to fetch the PHY link rate in order to properly configure the controller.
Signed-off-by: Yuti Amonkar <[email protected]> --- include/linux/phy/phy.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index bcee8eba62b3..a8b7b4a2b8de 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -119,6 +119,7 @@ struct phy_ops { */ struct phy_attrs { u32 bus_width; + u32 max_link_rate; enum phy_mode mode; }; @@ -231,6 +232,16 @@ static inline void phy_set_bus_width(struct phy *phy, int bus_width) { phy->attrs.bus_width = bus_width; } + +static inline int phy_get_max_link_rate(struct phy *phy) +{ + return phy->attrs.max_link_rate; +} + +static inline void phy_set_max_link_rate(struct phy *phy, int link_rate) +{ + phy->attrs.max_link_rate = link_rate; +} struct phy *phy_get(struct device *dev, const char *string); struct phy *phy_optional_get(struct device *dev, const char *string); struct phy *devm_phy_get(struct device *dev, const char *string); @@ -389,6 +400,16 @@ static inline void phy_set_bus_width(struct phy *phy, int bus_width) return; } +static inline int phy_get_max_link_rate(struct phy *phy) +{ + return -ENOSYS; +} + +static inline void phy_set_max_link_rate(struct phy *phy, int link_rate) +{ + return; +} + static inline struct phy *phy_get(struct device *dev, const char *string) { return ERR_PTR(-ENOSYS); -- 2.26.1
