[PATCH net-next 6/9] net: stmmac: qcom-ethqos: warn about legacy RGMII PHY modes

[Mohd Ayaan Anwar]

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@xxxxxxxxxxxxxxxx>
---
 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