[PATCH net-next 6/9] net: stmmac: qcom-ethqos: warn about legacy RGMII PHY modes
From: Mohd Ayaan Anwar <mohd.anwar@oss.qualcomm.com>
Date: 2026-09-03 18:54:59
Also in:
linux-arm-kernel, linux-arm-msm, linux-devicetree, 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
The qcom-ethqos driver is moving towards using "rgmii-id" together with PHY-provided delays. However, existing DTBs use "rgmii" and "rgmii-txid" and must remain supported for backwards compatibility. Warn when either of these legacy PHY modes is used to encourage users to migrate to updated DTBs using "rgmii-id". Signed-off-by: Mohd Ayaan Anwar <mohd.anwar@oss.qualcomm.com> --- drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
index 67738c1598c50ade22f2d548a6d66911c348af51..2ca2f03de30174c9771fdc517c0e21e3b392ad76 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c@@ -554,6 +554,8 @@ static void ethqos_fix_mac_speed_rgmii(void *bsp_priv, return; } + dev_warn(dev, "legacy RGMII phy-mode detected; consider upgrading to a newer DTB\n"); + /* Initialize the DLL first */ /* Set DLL_RST */
--
2.34.1