u-boot/0011-net-bcmgenet-Don-t-set-ID_MODE_DIS-.patch

From bf743c28432ba1eea23e0b05c582762b4b6fe1b7 Mon Sep 17 00:00:00 2001
From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Date: Thu, 20 Feb 2020 17:36:31 +0100
Subject: [PATCH] net: bcmgenet: Don't set ID_MODE_DIS when not using RGMII

As per Linux's driver, ID_MODE_DIS is only set when the PHY interface is
RGMII. Don't enable it for the rest of setups.

This has been seen to misconfigure RPi4's PHY when booting Linux.

Upstream submission:
https://patchwork.ozlabs.org/patch/1241570/

Fixes: d53e3fa385 ("net: Add support for Broadcom GENETv5 Ethernet
controller")
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Matthias Brugger <mbrugger@suse.com>
---
 drivers/net/bcmgenet.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/bcmgenet.c b/drivers/net/bcmgenet.c
index 8f4848aec6..e971b556ac 100644
--- a/drivers/net/bcmgenet.c
+++ b/drivers/net/bcmgenet.c
@@ -448,7 +448,10 @@ static int bcmgenet_adjust_link(struct bcmgenet_eth_priv *priv)
 	}
 
 	clrsetbits_32(priv->mac_reg + EXT_RGMII_OOB_CTRL, OOB_DISABLE,
-			RGMII_LINK | RGMII_MODE_EN | ID_MODE_DIS);
+			RGMII_LINK | RGMII_MODE_EN);
+
+	if (phy_dev->interface == PHY_INTERFACE_MODE_RGMII)
+		setbits_32(priv->mac_reg + EXT_RGMII_OOB_CTRL, ID_MODE_DIS);
 
 	writel(speed << CMD_SPEED_SHIFT, (priv->mac_reg + UMAC_CMD));