[PATCH net-next v2 20/22] net: stmmac: rk: rk3528: gmac0 only supports RMII
From: Russell King (Oracle) <hidden>
Date: 2026-01-26 11:47:08
Also in:
linux-arm-kernel, linux-rockchip
Subsystem:
arm/rockchip soc support, networking drivers, stmmac ethernet driver, the rest · Maintainers:
Heiko Stuebner, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
RK3528 gmac0 dtsi contains:
gmac0: ethernet@ffbd0000 {
phy-handle = <&rmii0_phy>;
phy-mode = "rmii";
mdio0: mdio {
rmii0_phy: ethernet-phy@2 {
phy-is-integrated;
};
};
};
This follows the same pattern as rk3328, where this gmac instance
only supports RMII. Disable RGMII in phylink's supported_interfaces
mask for this gmac instance.
Signed-off-by: Russell King (Oracle) <redacted>
---
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 ae9df91a018d..26fc93854cb0 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c@@ -728,6 +728,7 @@ static int rk3528_init(struct rk_priv_data *bsp_priv) case 0: bsp_priv->clock_grf_reg = RK3528_VO_GRF_GMAC_CON; bsp_priv->clock.rmii_clk_sel_mask = BIT_U16(3); + bsp_priv->supports_rgmii = false; return 0; case 1:
--
2.47.3