Re: [PATCH v4 2/2] arm64: dts: rockchip: Add rk3576 evb2 board

Hi Andrew,

On 1/21/2026 9:15 PM, Andrew Lunn wrote:

quoted

+&mdio0 {
+	rgmii_phy0: ethernet-phy@1 {
+		compatible = "ethernet-phy-ieee802.3-c22";
+		reg = <0x1>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&rgmii_phy0_rst>;
+		reset-assert-us = <20000>;
+		reset-deassert-us = <100000>;
+		reset-gpios = <&gpio3 RK_PD3 GPIO_ACTIVE_LOW>;
+		tx-internal-delay-ps = <1900>;

What PHY is this? Does it actually implement this property?

It is also close to the 2000ps default. Have you put the board in an
environment chamber and run tests at -20C to +70C to see if it will
work with the default 2000ps?

It is MotorComm yt8xxx PHY. I chose 1950 here because I find that
the MotorComm PHY binding only offer the options of 1950 or 2100. 

-- 
Best, 
Chaoyi