diff mbox series

[net-next,2/4] ARM: dts: ast2600-evb: add default RGMII delay

Message ID 20250317025922.1526937-3-jacky_chou@aspeedtech.com (mailing list archive)
State New
Headers show
Series Add AST2600 RGMII delay into ftgmac100 | expand

Commit Message

Jacky Chou March 17, 2025, 2:59 a.m. UTC 
Use tx-internal-delay-ps and rx-internal-delay-ps to
configure the RGMII delay on MAC.
And add default value for AST2600 MAC in dts.
Refer to faraday,ftgmac100yaml to know how to configure
the RGMII delay.

Signed-off-by: Jacky Chou <jacky_chou@aspeedtech.com>
---
 arch/arm/boot/dts/aspeed/aspeed-ast2600-evb.dts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

Comments

Andrew Lunn March 17, 2025, 1:08 p.m. UTC | #1 
> @@ -147,6 +153,9 @@ &mac2 {
>  	phy-mode = "rgmii";
>  	phy-handle = <&ethphy2>;
>  
> +	tx-internal-delay-ps = <8>;
> +	rx-internal-delay-ps = <4>;
> +

Ideally you want:

	phy-mode = "rgmii-id";
	tx-internal-delay-ps = <0>;
	rx-internal-delay-ps = <0>;

Since 'rgmii-id' correctly describes the hardware.

	Andrew
diff mbox series

Patch

diff --git a/arch/arm/boot/dts/aspeed/aspeed-ast2600-evb.dts b/arch/arm/boot/dts/aspeed/aspeed-ast2600-evb.dts
index de83c0eb1d6e..1db1f2a02d91 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-ast2600-evb.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-ast2600-evb.dts
@@ -126,6 +126,9 @@  &mac0 {
 	phy-mode = "rgmii-rxid";
 	phy-handle = <&ethphy0>;
 
+	tx-internal-delay-ps = <16>;
+	rx-internal-delay-ps = <10>;
+
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_rgmii1_default>;
 };
@@ -137,6 +140,9 @@  &mac1 {
 	phy-mode = "rgmii-rxid";
 	phy-handle = <&ethphy1>;
 
+	tx-internal-delay-ps = <16>;
+	rx-internal-delay-ps = <10>;
+
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_rgmii2_default>;
 };
@@ -147,6 +153,9 @@  &mac2 {
 	phy-mode = "rgmii";
 	phy-handle = <&ethphy2>;
 
+	tx-internal-delay-ps = <8>;
+	rx-internal-delay-ps = <4>;
+
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_rgmii3_default>;
 };
@@ -157,6 +166,9 @@  &mac3 {
 	phy-mode = "rgmii";
 	phy-handle = <&ethphy3>;
 
+	tx-internal-delay-ps = <8>;
+	rx-internal-delay-ps = <4>;
+
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_rgmii4_default>;
 };