Patch "net: phy: dp83869: Fix MII mode failure" has been added to the 6.6-stable tree

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This is a note to let you know that I've just added the patch titled

    net: phy: dp83869: Fix MII mode failure

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     net-phy-dp83869-fix-mii-mode-failure.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit b631ab019b997d84fa187be157dc81b62457e9c5
Author: MD Danish Anwar <danishanwar@xxxxxx>
Date:   Tue Apr 23 14:18:28 2024 +0530

    net: phy: dp83869: Fix MII mode failure
    
    [ Upstream commit 6c9cd59dbcb09a2122b5ce0dfc07c74e6fc00dc0 ]
    
    The DP83869 driver sets the MII bit (needed for PHY to work in MII mode)
    only if the op-mode is either DP83869_100M_MEDIA_CONVERT or
    DP83869_RGMII_100_BASE.
    
    Some drivers i.e. ICSSG support MII mode with op-mode as
    DP83869_RGMII_COPPER_ETHERNET for which the MII bit is not set in dp83869
    driver. As a result MII mode on ICSSG doesn't work and below log is seen.
    
    TI DP83869 300b2400.mdio:0f: selected op-mode is not valid with MII mode
    icssg-prueth icssg1-eth: couldn't connect to phy ethernet-phy@0
    icssg-prueth icssg1-eth: can't phy connect port MII0
    
    Fix this by setting MII bit for DP83869_RGMII_COPPER_ETHERNET op-mode as
    well.
    
    Fixes: 94e86ef1b801 ("net: phy: dp83869: support mii mode when rgmii strap cfg is used")
    Signed-off-by: MD Danish Anwar <danishanwar@xxxxxx>
    Reviewed-by: Ravi Gunasekaran <r-gunasekaran@xxxxxx>
    Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/net/phy/dp83869.c b/drivers/net/phy/dp83869.c
index fa8c6fdcf3018..d7aaefb5226b6 100644
--- a/drivers/net/phy/dp83869.c
+++ b/drivers/net/phy/dp83869.c
@@ -695,7 +695,8 @@ static int dp83869_configure_mode(struct phy_device *phydev,
 	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) {
+		    dp83869->mode == DP83869_RGMII_100_BASE ||
+		    dp83869->mode == DP83869_RGMII_COPPER_ETHERNET) {
 			phy_ctrl_val |= DP83869_OP_MODE_MII;
 		} else {
 			phydev_err(phydev, "selected op-mode is not valid with MII mode\n");




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