net: lx2160a.c: Update to set ECx_PMUX precedence
As per hardware documentation, ECx_PMUX has precedence
over SerDes protocol.
For LX2160/LX2162 if DPMACs 17 and 18 are enabled as SGMII
through SerDes protocol but ECx_PMUX configured them as RGMII,
then the ports will be configured as RGMII and not SGMII.
Signed-off-by: Razvan Ionut Cirjan <razvanionut.cirjan@nxp.com>
[Rebased]
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
index e610528..596b88d 100644
--- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
+++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c
@@ -1147,15 +1147,15 @@
* EC*_PMUX(rgmii) bits in RCW.
* e.g. dpmac 17 and 18 in LX2160A can be configured as SGMII from
* serdes bits and as RGMII via EC1_PMUX/EC2_PMUX bits
- * Now if a dpmac is enabled by serdes bits then it takes precedence
- * over EC*_PMUX bits. i.e. in LX2160A if we select serdes protocol
- * that configures dpmac17 as SGMII and set the EC1_PMUX as RGMII,
- * then the dpmac is SGMII and not RGMII.
+ * Now if a dpmac is enabled as RGMII through ECx_PMUX then it takes
+ * precedence over SerDes protocol. i.e. in LX2160A if we select serdes
+ * protocol that configures dpmac17 as SGMII and set the EC1_PMUX as
+ * RGMII, then the dpmac is RGMII and not SGMII.
*
- * Therefore, move the fsl_rgmii_init after fsl_serdes_init. in
- * fsl_rgmii_init function of SOC, we will check if the dpmac is enabled
- * or not? if it is (fsl_serdes_init has already enabled the dpmac),
- * then don't enable it.
+ * Therefore, even thought fsl_rgmii_init is after fsl_serdes_init
+ * function of SOC, the dpmac will be enabled as RGMII even if it was
+ * also enabled before as SGMII. If ECx_PMUX is not configured for
+ * RGMII, DPMAC will remain configured as SGMII from fsl_serdes_init().
*/
fsl_rgmii_init();
#endif