From 94e86ef1b801d213dfb8543633dec86abb1a457d Mon Sep 17 00:00:00 2001 From: Grygorii Strashko Date: Mon, 8 May 2023 12:33:59 +0530 Subject: [PATCH] net: phy: dp83869: support mii mode when rgmii strap cfg is used The DP83869 PHY on TI's k3-am642-evm supports both MII and RGMII interfaces and is configured by default to use RGMII interface (strap). However, the board design allows switching dynamically to MII interface for testing purposes by applying different set of pinmuxes. To support switching to MII interface, update the DP83869 PHY driver to configure OP_MODE_DECODE.RGMII_MII_SEL(bit 5) properly when MII PHY interface mode is requested. Signed-off-by: Grygorii Strashko Signed-off-by: Siddharth Vadapalli Reviewed-by: Andrew Lunn Link: https://lore.kernel.org/r/20230508070359.357474-1-s-vadapalli@ti.com Signed-off-by: Paolo Abeni --- drivers/net/phy/dp83869.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/net/phy/dp83869.c b/drivers/net/phy/dp83869.c index 9ab5eff..fa8c6fd 100644 --- a/drivers/net/phy/dp83869.c +++ b/drivers/net/phy/dp83869.c @@ -692,8 +692,19 @@ static int dp83869_configure_mode(struct phy_device *phydev, /* Below init sequence for each operational mode is defined in * section 9.4.8 of the datasheet. */ + phy_ctrl_val = dp83869->mode; + if (phydev->interface == PHY_INTERFACE_MODE_MII) { + if (dp83869->mode == DP83869_100M_MEDIA_CONVERT || + dp83869->mode == DP83869_RGMII_100_BASE) { + phy_ctrl_val |= DP83869_OP_MODE_MII; + } else { + phydev_err(phydev, "selected op-mode is not valid with MII mode\n"); + return -EINVAL; + } + } + ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_OP_MODE, - dp83869->mode); + phy_ctrl_val); if (ret) return ret; -- 2.7.4