From 365e649361cde842c720ffa4b6a22fe092287990 Mon Sep 17 00:00:00 2001 From: Yao Zi Date: Fri, 9 Jan 2026 09:34:44 +0000 Subject: [PATCH] net: phy: motorcomm: Support YT8531S PHY in YT6801 Ethernet controller YT6801's internal PHY is confirmed as a GMII-capable variant of YT8531S by a previous series[1] and reading PHY ID. Add support for PHY_INTERFACE_MODE_GMII for YT8531S to allow the Ethernet driver to reuse the PHY code for its internal PHY. Link: https://lore.kernel.org/all/a48d76ac-db08-46d5-9528-f046a7b541dc@motor-comm.com/ # [1] Co-developed-by: Frank Sae Signed-off-by: Frank Sae Signed-off-by: Yao Zi Reviewed-by: Andrew Lunn Reviewed-by: Russell King (Oracle) Link: https://patch.msgid.link/20260109093445.46791-3-me@ziyao.cc Signed-off-by: Jakub Kicinski --- drivers/net/phy/motorcomm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/net/phy/motorcomm.c b/drivers/net/phy/motorcomm.c index 89b5b19a9bd28..dc9569a39cb49 100644 --- a/drivers/net/phy/motorcomm.c +++ b/drivers/net/phy/motorcomm.c @@ -910,6 +910,10 @@ static int ytphy_rgmii_clk_delay_config(struct phy_device *phydev) val |= FIELD_PREP(YT8521_RC1R_RX_DELAY_MASK, rx_reg) | FIELD_PREP(YT8521_RC1R_GE_TX_DELAY_MASK, tx_reg); break; + case PHY_INTERFACE_MODE_GMII: + if (phydev->drv->phy_id != PHY_ID_YT8531S) + return -EOPNOTSUPP; + return 0; default: /* do not support other modes */ return -EOPNOTSUPP; } -- 2.47.3