[PATCH net-next v11 4/7] net: stmmac: qcom-ethqos: set serdes mode before powerup
From: Bartosz Golaszewski <hidden>
Date: 2026-06-29 11:29:28
Also in:
imx, linux-amlogic, linux-arm-kernel, linux-arm-msm, linux-devicetree, linux-mips, linux-renesas-soc, linux-riscv, linux-rockchip, linux-sunxi, lkml
Subsystem:
networking drivers, qualcomm ethqos ethernet driver, stmmac ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Mohd Ayaan Anwar, Linus Torvalds
Call phy_set_mode_ext() before phy_power_on() in qcom_ethqos_serdes_powerup(). This is harmless for existing users but on SCMI systems this is required for the PHY driver to select the right performance level - which translates to the link speed. This is done ahead of adding support for the firmware-managed EMAC on Qualcomm sa8255p. Signed-off-by: Bartosz Golaszewski <redacted> --- drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index ac7d6d3e205a1ab5b391def879d6f1033a0961b6..47b70b5e706f221c01f1c0ae3b1acafae6641165 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c@@ -601,10 +601,19 @@ static int qcom_ethqos_serdes_powerup(struct net_device *ndev, void *priv) if (ret) return ret; + ret = phy_set_mode_ext(ethqos->serdes_phy, PHY_MODE_ETHERNET, + ethqos->phy_mode); + if (ret) + goto err_out; + ret = phy_power_on(ethqos->serdes_phy); if (ret) - phy_exit(ethqos->serdes_phy); + goto err_out; + return 0; + +err_out: + phy_exit(ethqos->serdes_phy); return ret; }
--
2.47.3