netdev - [PATCH RFC net-next 14/15] net: stmmac: rk: rk3328: gmac2phy only supports RMII

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Message-Id: <E1vQ5Fq-0000000GNwl-1aSe@rmk-PC.armlinux.org.uk>
Date: Mon, 01 Dec 2025 14:51:54 +0000
From: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
To: Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>
Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>,
	Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Heiko Stuebner <heiko@...ech.de>,
	Jakub Kicinski <kuba@...nel.org>,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-stm32@...md-mailman.stormreply.com,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	netdev@...r.kernel.org,
	Paolo Abeni <pabeni@...hat.com>
Subject: [PATCH RFC net-next 14/15] net: stmmac: rk: rk3328: gmac2phy only
 supports RMII

As detailed in a previous commit ("net: stmmac: rk: convert rk3328 to
use bsp_priv->id") rk3328 gmac2phy only supports RMII, whereas gmac2io
supports both RMII and RGMII. Clear supports_rgmii for gmac2phy.

Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index c9a915b2cb84..c04a115beb98 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -438,6 +438,7 @@ static int rk3328_init(struct rk_priv_data *bsp_priv)
 	case 1: /* gmac2phy */
 		bsp_priv->phy_intf_sel_grf_reg = RK3328_GRF_MAC_CON2;
 		bsp_priv->speed_grf_reg = RK3328_GRF_MAC_CON2;
+		bsp_priv->supports_rgmii = false;
 		return 0;
 
 	default:
-- 
2.47.3