[PATCH net-next v16 3/7] net: stmmac: qcom-ethqos: set serdes mode before powerup
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IN NET-NEXT
From: Bartosz Golaszewski <hidden>
Date: 2026-10-14 12:37:19
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, Maxime Chevallier, Linus Torvalds
Revision v16 of 12 in this series; queued in net-next as 7af44cb9e447 on 2026-10-21.
Revisions (12)
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 | 14 +++++++++++++- 1 file changed, 13 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..e2e611a4d2c06bd567e9d5e353b3a4893623de6c 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c@@ -601,10 +601,22 @@ static int qcom_ethqos_serdes_powerup(struct net_device *ndev, void *priv) if (ret) return ret; + if (ethqos->phy_mode == PHY_INTERFACE_MODE_SGMII || + ethqos->phy_mode == PHY_INTERFACE_MODE_2500BASEX) { + 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; }
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2.47.3