[PATCH RESEND v1] net: fsl_enetc: fix the duplex setting on the iMX platform

[alice.guo at oss.nxp.com]

From: Clark Wang <xiaoning.wang at nxp.com>

The iMX and LS platforms use different bits in the same register to
set duplex, but their logics are opposite.
The current settings will result in unexpected configurations in
RGMII mode.

Fixes: e6df2f5e22c6 ("net: fsl_enetc: Update enetc driver to support i.MX95")
Signed-off-by: Clark Wang <xiaoning.wang at nxp.com>
Signed-off-by: Alice Guo <alice.guo at nxp.com>
Reviewed-by: Tim Harvey <tharvey at gateworks.com>
---
 drivers/net/fsl_enetc.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/net/fsl_enetc.c b/drivers/net/fsl_enetc.c
index 206f1a381bb..b07193e4e83 100644
--- a/drivers/net/fsl_enetc.c
+++ b/drivers/net/fsl_enetc.c
@@ -18,6 +18,7 @@
 #include <asm/io.h>
 #include <pci.h>
 #include <miiphy.h>
+#include <linux/bitfield.h>
 #include <linux/bug.h>
 #include <linux/delay.h>
 #include <linux/build_bug.h>
@@ -396,7 +397,7 @@ static int enetc_init_sgmii(struct udevice *dev)
 /* set up MAC for RGMII */
 static void enetc_init_rgmii(struct udevice *dev, struct phy_device *phydev)
 {
-	u32 old_val, val, dpx = 0;
+	u32 old_val, val = 0;
 
 	old_val = val = enetc_read_mac_port(dev, ENETC_PM_IF_MODE);
 
@@ -416,15 +417,14 @@ static void enetc_init_rgmii(struct udevice *dev, struct phy_device *phydev)
 		val |= ENETC_PM_IFM_SSP_10;
 	}
 
-	if (enetc_is_imx95(dev))
-		dpx = ENETC_PM_IFM_FULL_DPX_IMX;
+	if  (enetc_is_imx95(dev))
+		val = u32_replace_bits(val,
+				       phydev->duplex == DUPLEX_FULL ? 0 : 1,
+				       ENETC_PM_IFM_FULL_DPX_IMX);
 	else if (enetc_is_ls1028a(dev))
-		dpx = ENETC_PM_IFM_FULL_DPX_LS;
-
-	if (phydev->duplex == DUPLEX_FULL)
-		val |= dpx;
-	else
-		val &= ~dpx;
+		val = u32_replace_bits(val,
+				       phydev->duplex == DUPLEX_FULL ? 1 : 0,
+				       ENETC_PM_IFM_FULL_DPX_LS);
 
 	if (val == old_val)
 		return;
-- 
2.34.1