From 10d7fac4c52618d94a42d701d28f114147291ecc Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Wed, 29 Aug 2018 08:00:23 -0700 Subject: dt-bindings: net: cpsw: Document cpsw-phy-sel usage but prefer phandle The current cpsw usage for cpsw-phy-sel is undocumented but is used for all the boards using cpsw. And cpsw-phy-sel is not really a child of the cpsw device, it lives in the system control module instead. Let's document the existing usage, and improve it a bit where we prefer to use a phandle instead of a child device for it. That way we can properly describe the hardware in dts files for things like genpd. Cc: devicetree@vger.kernel.org Cc: Andrew Lunn Cc: Grygorii Strashko Cc: Ivan Khoronzhuk Cc: Mark Rutland Cc: Murali Karicheri Cc: Rob Herring Signed-off-by: Tony Lindgren Signed-off-by: David S. Miller --- Documentation/devicetree/bindings/net/cpsw.txt | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/net/cpsw.txt b/Documentation/devicetree/bindings/net/cpsw.txt index 41089369f891..b3acebe08eb0 100644 --- a/Documentation/devicetree/bindings/net/cpsw.txt +++ b/Documentation/devicetree/bindings/net/cpsw.txt @@ -19,6 +19,10 @@ Required properties: - slaves : Specifies number for slaves - active_slave : Specifies the slave to use for time stamping, ethtool and SIOCGMIIPHY +- cpsw-phy-sel : Specifies the phandle to the CPSW phy mode selection + device. See also cpsw-phy-sel.txt for it's binding. + Note that in legacy cases cpsw-phy-sel may be + a child device instead of a phandle. Optional properties: - ti,hwmods : Must be "cpgmac0" @@ -75,6 +79,7 @@ Examples: cpts_clock_mult = <0x80000000>; cpts_clock_shift = <29>; syscon = <&cm>; + cpsw-phy-sel = <&phy_sel>; cpsw_emac0: slave@0 { phy_id = <&davinci_mdio>, <0>; phy-mode = "rgmii-txid"; @@ -103,6 +108,7 @@ Examples: cpts_clock_mult = <0x80000000>; cpts_clock_shift = <29>; syscon = <&cm>; + cpsw-phy-sel = <&phy_sel>; cpsw_emac0: slave@0 { phy_id = <&davinci_mdio>, <0>; phy-mode = "rgmii-txid"; -- cgit v1.2.3