Besides giving pointers to the relevant functions for PHY mode and submode configuration, this clarifies the need to set them before powering on the PHY.
Signed-off-by: Paul Kocialkowski <paul.kocialkow...@bootlin.com> --- Documentation/driver-api/phy/phy.rst | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/Documentation/driver-api/phy/phy.rst b/Documentation/driver-api/phy/phy.rst index 8fc1ce0bb905..6cbc72707a49 100644 --- a/Documentation/driver-api/phy/phy.rst +++ b/Documentation/driver-api/phy/phy.rst @@ -195,3 +195,21 @@ DeviceTree Binding The documentation for PHY dt binding can be found @ Documentation/devicetree/bindings/phy/phy-bindings.txt + +PHY Mode and Submode +==================== + +Once a reference to a PHY is obtained by a controller, the PHY can be configured +to a PHY mode and submode. PHY modes are described in the `phy_mode` enum while +submodes are specific to the selected PHY mode. + +Mode and submode configuration is done by calling:: + + int phy_set_mode_ext(struct phy *phy, enum phy_mode mode, int submode); + +If no submode is to be configured, users can call:: + + int phy_set_mode(struct phy *phy, enum phy_mode mode); + +The PHY mode and submode must not be configured after the PHY has already been +powered on. -- 2.29.2 -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to linux-sunxi+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/20201128142839.517949-2-paul.kocialkowski%40bootlin.com.
