This board expects the MAC to add the delay. Set `phy-mode = "rgmii-id"`
in DTS to match upstream definition and work correctly with the updated
driver, which switches the semantic handling of 'rgmii' and 'rgmii-id'.

Breaking ABI compatibility is acceptable for this board, as it has no
known users or interest from any users.

Signed-off-by: Yijie Yang <yijie.yang@oss.qualcomm.com>
---
 arch/arm64/boot/dts/qcom/sa8155p-adp.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sa8155p-adp.dts b/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
index 388d5ecee949..4ac1a5b09e30 100644
--- a/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
+++ b/arch/arm64/boot/dts/qcom/sa8155p-adp.dts
@@ -325,7 +325,7 @@ &ethernet {
 	pinctrl-0 = <&ethernet_defaults>;
 
 	phy-handle = <&rgmii_phy>;
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-id";
 
 	mdio {
 		compatible = "snps,dwmac-mdio";

-- 
2.34.1