[PATCH] net: fsl_enetc: fix imdio register calculation

[Heiko Thiery]

From: Thomas Schaefer <thomas.schaefer at kontron.com>

With commit cc4e8af2c552, fsl_enetc register accessors have been split to
handle different register offsets on different SoCs. However, for
internal MDIO register calculation, only ENETC_PM_IMDIO_BASE was fixed
without adding the SoC specific MAC register offset.

As a result, the network support for the Kontron SMARC-sAL28 and
probably other boards based on the LS1028A CPU is broken.

Add the SoC specific MAC register offset to calculation of imdio.priv to
fix this.

Fixes: cc4e8af2c552 ("net: fsl_enetc: Split register accessors")
Signed-off-by: Thomas Schaefer <thomas.schaefer at kontron.com>
Signed-off-by: Heiko Thiery <heiko.thiery at gmail.com>

---

But the question that now arises is, does this code path work on the imx
SoCs as well. Now the imx specific offset 0x5000 is added here and was not
used before.

Can someone please test this on an imx9 and confirm?

 drivers/net/fsl_enetc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/fsl_enetc.c b/drivers/net/fsl_enetc.c
index 52fa820f51..97cccda451 100644
--- a/drivers/net/fsl_enetc.c
+++ b/drivers/net/fsl_enetc.c
@@ -473,13 +473,15 @@ static int enetc_init_sxgmii(struct udevice *dev)
 /* Apply protocol specific configuration to MAC, serdes as needed */
 static void enetc_start_pcs(struct udevice *dev)
 {
+	struct enetc_data *data = (struct enetc_data *)dev_get_driver_data(dev);
 	struct enetc_priv *priv = dev_get_priv(dev);
 
 	/* register internal MDIO for debug purposes */
 	if (enetc_read_pcapr_mdio(dev)) {
 		priv->imdio.read = enetc_mdio_read;
 		priv->imdio.write = enetc_mdio_write;
-		priv->imdio.priv = priv->port_regs + ENETC_PM_IMDIO_BASE;
+		priv->imdio.priv = priv->port_regs + data->reg_offset_mac +
+		                   ENETC_PM_IMDIO_BASE;
 		strlcpy(priv->imdio.name, dev->name, MDIO_NAME_LEN);
 		if (!miiphy_get_dev_by_name(priv->imdio.name))
 			mdio_register(&priv->imdio);
-- 
2.20.1