linux-kernel - [PATCH V2] ARM: dts: am5729: beaglebone-ai: fix rgmii phy-mode

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Date:   Mon, 15 Jun 2020 17:57:01 +0200
From:   Drew Fustini <drew@...gleboard.org>
To:     Tony Lindgren <tony@...mide.com>, Rob Herring <robh+dt@...nel.org>,
        Linux-OMAP <linux-omap@...r.kernel.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Grygorii Strashko <grygorii.strashko@...com>
Cc:     Jason Kridner <jkridner@...gleboard.org>,
        Robert Nelson <robertcnelson@...il.com>,
        Vinod Koul <vkoul@...nel.org>
Subject: [PATCH V2] ARM: dts: am5729: beaglebone-ai: fix rgmii phy-mode  

Since commit cd28d1d6e52e ("net: phy: at803x: Disable phy delay for
RGMII mode") the networking is broken on the BeagleBone AI which has
the AR8035 PHY for Gigabit Ethernet [0].  The fix is to switch from
phy-mode = "rgmii" to phy-mode = "rgmii-rxid".

Note: Grygorii made a similar DT fix for other AM57xx boards with a
different phy in commit 820f8a870f65 ("ARM: dts: am57xx: fix networking
on boards with ksz9031 phy").

[0] https://git.io/Jf7PX

Fixes: 520557d4854b ("ARM: dts: am5729: beaglebone-ai: adding device tree")
Cc: Vinod Koul <vkoul@...nel.org>
Reviewed-by: Grygorii Strashko <grygorii.strashko@...com>
Signed-off-by: Robert Nelson <robertcnelson@...il.com>
Signed-off-by: Drew Fustini <drew@...gleboard.org>
---
V2:
- fix formatting of commit reference
- add Review-by: from Grygorii

 arch/arm/boot/dts/am5729-beagleboneai.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/am5729-beagleboneai.dts b/arch/arm/boot/dts/am5729-beagleboneai.dts
index 9877d7709d41..4c51c6b05e64 100644
--- a/arch/arm/boot/dts/am5729-beagleboneai.dts
+++ b/arch/arm/boot/dts/am5729-beagleboneai.dts
@@ -505,7 +505,7 @@ &mac {
 
 &cpsw_emac0 {
 	phy-handle = <&phy0>;
-	phy-mode = "rgmii";
+	phy-mode = "rgmii-rxid";
 };
 
 &ocp {
-- 
2.25.1