[PATCH] ARM: dts: keystone-k2g-evm: fix rgmii phy-mode for ksz9031 phy

Grygorii Strashko grygorii.strashko at ti.com
Wed Jul 15 04:54:27 EDT 2020


Since commit bcf3440c6dd7 ("net: phy: micrel: add phy-mode support for the
KSZ9031 PHY") the networking is broken on keystone-k2g-evm board.

The above board have phy-mode = "rgmii-id" and it is worked before because
KSZ9031 PHY started with default RGMII internal delays configuration (TX
off, RX on 1.2 ns) and MAC provided TX delay by default.
After above commit, the KSZ9031 PHY starts handling phy mode properly and
enables both RX and TX delays, as result networking is become broken.

Fix it by switching to phy-mode = "rgmii-rxid" to reflect previous
behavior.

Cc: Oleksij Rempel <o.rempel at pengutronix.de>
Cc: Andrew Lunn <andrew at lunn.ch>
Cc: Philippe Schenker <philippe.schenker at toradex.com>
Fixes: bcf3440c6dd7 ("net: phy: micrel: add phy-mode support for the KSZ9031 PHY")
Signed-off-by: Grygorii Strashko <grygorii.strashko at ti.com>
---
Fix for one more broken TI board with KSZ9031 PHY.

 arch/arm/boot/dts/keystone-k2g-evm.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/keystone-k2g-evm.dts b/arch/arm/boot/dts/keystone-k2g-evm.dts
index db640bab8c1d..8b3d64c913d8 100644
--- a/arch/arm/boot/dts/keystone-k2g-evm.dts
+++ b/arch/arm/boot/dts/keystone-k2g-evm.dts
@@ -402,7 +402,7 @@
 
 &gbe0 {
 	phy-handle = <&ethphy0>;
-	phy-mode = "rgmii-id";
+	phy-mode = "rgmii-rxid";
 	status = "okay";
 };
 
-- 
2.17.1




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