linux-kernel - [PATCH] MIPS: loongson32: Fix the validation failure of LS1B & LS1C Ethernet PHY

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Message-Id: <20220818050019.1924408-1-keguang.zhang@gmail.com>
Date:   Thu, 18 Aug 2022 13:00:19 +0800
From:   Keguang Zhang <keguang.zhang@...il.com>
To:     linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        "David S . Miller" <davem@...emloft.net>,
        Kelvin Cheung <keguang.zhang@...il.com>
Subject: [PATCH] MIPS: loongson32: Fix the validation failure of LS1B & LS1C Ethernet PHY

From: Kelvin Cheung <keguang.zhang@...il.com>

The Ethernet of LS1B/LS1C doesn't work due to the stmmac driver
using phylink_generic_validate() instead of stmmac_validate().
Moreover the driver assumes the PHY interface mode
passed in platform data is always supported.

stmmaceth stmmaceth.0 eth0: validation of gmii with support 00000000,00000000,000062cf and advertisement 00000000,00000000,000062cf failed: -EINVAL
stmmaceth stmmaceth.0 eth0: stmmac_open: Cannot attach to PHY (error: -22)

This patch sets phy_interface field of platform data.

Fixes: 04a0683f7db4 ("net: stmmac: convert to phylink_generic_validate()")
Fixes: d194923d51c9 ("net: stmmac: fill in supported_interfaces")
Signed-off-by: Kelvin Cheung <keguang.zhang@...il.com>
---
 arch/mips/loongson32/common/platform.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/mips/loongson32/common/platform.c b/arch/mips/loongson32/common/platform.c
index 794c96c2a4cd..741aace80b80 100644
--- a/arch/mips/loongson32/common/platform.c
+++ b/arch/mips/loongson32/common/platform.c
@@ -147,8 +147,10 @@ static struct plat_stmmacenet_data ls1x_eth0_pdata = {
 	.phy_addr		= -1,
 #if defined(CONFIG_LOONGSON1_LS1B)
 	.interface		= PHY_INTERFACE_MODE_MII,
+	.phy_interface		= PHY_INTERFACE_MODE_MII,
 #elif defined(CONFIG_LOONGSON1_LS1C)
 	.interface		= PHY_INTERFACE_MODE_RMII,
+	.phy_interface		= PHY_INTERFACE_MODE_RMII,
 #endif
 	.mdio_bus_data		= &ls1x_mdio_bus_data,
 	.dma_cfg		= &ls1x_eth_dma_cfg,

base-commit: 568035b01cfb107af8d2e4bd2fb9aea22cf5b868
-- 
2.34.1