[openwrt/openwrt] ath79: apply Engenius ECB1750 style to OpenMesh MR900 RGMII cfg

[LEDE Commits]

adrian pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/4fbdadc0bf01196d4e385872cfa805060fb127a6

commit 4fbdadc0bf01196d4e385872cfa805060fb127a6
Author: Sven Eckelmann <sven at narfation.org>
AuthorDate: Wed Dec 30 21:56:55 2020 +0100

    ath79: apply Engenius ECB1750 style to OpenMesh MR900 RGMII cfg
    
    The OpenMesh MR900 is a modified version of the Exx900/Exx1750 family.
    These devices are shipped with an AR803x PHY and had various problems with
    the delay configuration in ar71xx. These problems are now in the past [1]
    and parts of the delay configuration should now be done in the PHY only.
    
    Just switch to the configuration of the ECB1750 to have an already well
    tested configuration for ath79 with the newer kernel versions.
    
    [1] https://github.com/openwrt/openwrt/pull/3505#issuecomment-716050292
    
    Reported-by: Michael Pratt <mcpratt at pm.me>
    Signed-off-by: Sven Eckelmann <sven at narfation.org>
---
 target/linux/ath79/dts/qca9558_openmesh_mr900.dtsi | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/target/linux/ath79/dts/qca9558_openmesh_mr900.dtsi b/target/linux/ath79/dts/qca9558_openmesh_mr900.dtsi
index e506e12c31..8c612042c8 100644
--- a/target/linux/ath79/dts/qca9558_openmesh_mr900.dtsi
+++ b/target/linux/ath79/dts/qca9558_openmesh_mr900.dtsi
@@ -145,20 +145,16 @@
 &eth0 {
 	status = "okay";
 
-	pll-data = <0xae000000 0xa0000101 0xa0001313>;
+	pll-data = <0x82000000 0x80000101 0x80001313>;
 
 	mtd-mac-address = <&art 0x0>;
 
-	phy-mode = "rgmii-rxid";
+	phy-mode = "rgmii-id";
 	phy-handle = <&phy5>;
 
 	gmac-config {
 		device = <&gmac>;
 		rgmii-enabled = <1>;
-		rxd-delay = <3>;
-		rxdv-delay = <3>;
-		txd-delay = <0>;
-		txen-delay = <0>;
 	};
 };