[PATCH v3 05/10] ARM: dts: aspeed: system1: Add RGMII support

Ninad Palsule
2025-01-08T16:37:40Z

system1 has 2 transceiver connected through the RGMII interfaces. Added
device tree entry to enable RGMII support.

ASPEED AST2600 documentation recommends using 'rgmii-rxid' as a
'phy-mode' for mac0 and mac1 to enable the RX interface delay from the
PHY chip.

Signed-off-by: Ninad Palsule <ninad@linux.ibm.com>
---
.../dts/aspeed/aspeed-bmc-ibm-system1.dts | 38 ++++++++++++++++---
1 file changed, 33 insertions(+), 5 deletions(-)

diff --git a/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts b/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts
index d11a922c9d44..0f4658074709 100644
--- a/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts
+++ b/arch/arm/boot/dts/aspeed/aspeed-bmc-ibm-system1.dts
@@ -425,14 +425,42 @@ &lpc_ctrl {
memory-region = <&flash_memory>;
};

+&mdio0 {
+ status = "okay";
+
+ ethphy0: ethernet-phy@0 {
+ compatible = "ethernet-phy-ieee802.3-c22";
+ reg = <0>;
+ };
+};
+
+&mdio2 {
+ status = "okay";
+
+ ethphy2: ethernet-phy@0 {
+ compatible = "ethernet-phy-ieee802.3-c22";
+ reg = <0>;
+ };
+};
+
+&mac0 {
+ status = "okay";
+
+ phy-mode = "rgmii-rxid";
+ phy-handle = <&ethphy0>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_rgmii1_default>;
+};
+
&mac2 {
status = "okay";
+
+ phy-mode = "rgmii";
+ phy-handle = <&ethphy2>;
+
pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_rmii3_default>;
- clocks = <&syscon ASPEED_CLK_GATE_MAC3CLK>,
- <&syscon ASPEED_CLK_MAC3RCLK>;
- clock-names = "MACCLK", "RCLK";
- use-ncsi;
+ pinctrl-0 = <&pinctrl_rgmii3_default>;
};

&mac3 {
--
2.43.0