From: Alexandre Belloni <alexandre.belloni@bootlin.com>
Date: Fri, 17 Jul 2020 23:36:44 +0000 (+0200)
Subject: ARM: dts: at91: sama5d3_xplained: change phy-mode
X-Git-Tag: v5.10.7~1993^2~5^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7dbf4bbf1c320d82058878bd44805724d171e1e8;p=platform%2Fkernel%2Flinux-rpi.git

ARM: dts: at91: sama5d3_xplained: change phy-mode

Since commit bcf3440c6dd7 ("net: phy: micrel: add phy-mode support for the
KSZ9031 PHY"), networking is broken on sama5d3 xplained.

The device tree has phy-mode = "rgmii" and this worked before, because
KSZ9031 PHY started with default RGMII internal delays configuration (TX
off, RX on 1.2 ns) and MAC provided TX delay. After above commit, the
KSZ9031 PHY starts handling phy mode properly and disables RX delay, as
result networking is become broken.

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

Fixes: bcf3440c6dd78bfe ("net: phy: micrel: add phy-mode support for the KSZ9031 PHY")
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20200717233644.841080-1-alexandre.belloni@bootlin.com
---

diff --git a/arch/arm/boot/dts/at91-sama5d3_xplained.dts b/arch/arm/boot/dts/at91-sama5d3_xplained.dts
index 61f068a..7abf555 100644
--- a/arch/arm/boot/dts/at91-sama5d3_xplained.dts
+++ b/arch/arm/boot/dts/at91-sama5d3_xplained.dts
@@ -128,7 +128,7 @@
 			};
 
 			macb0: ethernet@f0028000 {
-				phy-mode = "rgmii";
+				phy-mode = "rgmii-rxid";
 				#address-cells = <1>;
 				#size-cells = <0>;
 				status = "okay";