[PATCH 1/4] ARM: dts: imx6qdl-sabrelite: add mdio phy address 0

[Frank Li]

According to IEEE 802.3 Clause 22.2.4.5.5 PHYAD (PHY Address), A PHY that
is connected to the station management entity via the mechanical interface
defined in 22.6 shall always respond to transactions addressed to PHY
Address zero <00000>.

Use address 0 is safe because only one MDIO phy under mdio bus.

Fix below CHECK_DTBS warnings:
arm/boot/dts/nxp/imx/imx6dl-sabrelite.dtb: ethernet at 2188000 (fsl,imx6q-fec): mdio: Unevaluated properties are not allowed ('ethernet-phy' was unexpected)
        from schema $id: http://devicetree.org/schemas/net/fsl,fec.yaml
/home/lizhi/source/linux-upstream-pci/arch/arm/boot/dts/nxp/imx/imx6dl-sabrelite.dtb: ethernet-phy (ethernet-phy-ieee802.3-c22): 'reg' is a required property
        from schema $id: http://devicetree.org/schemas/net/ethernet-phy.yaml

Signed-off-by: Frank Li <Frank.Li at nxp.com>
---
 arch/arm/boot/dts/nxp/imx/imx6qdl-sabrelite.dtsi | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/nxp/imx/imx6qdl-sabrelite.dtsi b/arch/arm/boot/dts/nxp/imx/imx6qdl-sabrelite.dtsi
index 3b7d01065e87b2587a87f97438eea205be3222f8..d936732db46f07806ca07de4353ff47fe26e23b6 100644
--- a/arch/arm/boot/dts/nxp/imx/imx6qdl-sabrelite.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx6qdl-sabrelite.dtsi
@@ -291,8 +291,9 @@ mdio {
 		#address-cells = <1>;
 		#size-cells = <0>;
 
-		ethphy: ethernet-phy {
+		ethphy: ethernet-phy at 0 {
 			compatible = "ethernet-phy-ieee802.3-c22";
+			reg = <0>;
 			txen-skew-ps = <0>;
 			txc-skew-ps = <3000>;
 			rxdv-skew-ps = <0>;

-- 
2.43.0