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 --- arch/arm/cpu/armv8/fsl-layerscape/cpu.c | 20 +++++++++---------- .../asm/arch-fsl-layerscape/immap_lsch3.h | 2 +- drivers/net/ldpaa_eth/lx2160a.c | 4 ++-- 3 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c index 33d72f194558..33920bad26f0 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c @@ -1144,17 +1144,17 @@ int arch_early_init_r(void) /* some dpmacs in armv8a based freescale layerscape SOCs can be * configured via both serdes(sgmii, xfi, xlaui etc) bits and via * EC*_PMUX(rgmii) bits in RCW. - * e.g. dpmac 17 and 18 in LX2160A and LX2162A 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. + * 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 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 diff --git a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h index 2971262736f4..d579af9558b6 100644 --- a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h +++ b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h @@ -396,7 +396,7 @@ struct ccsr_gur { #define FSL_CHASSIS3_EC2_REGSR 27 #define FSL_CHASSIS3_EC1_REGSR_PRTCL_MASK 0x00000003 #define FSL_CHASSIS3_EC1_REGSR_PRTCL_SHIFT 0 -#define FSL_CHASSIS3_EC2_REGSR_PRTCL_MASK 0x00000007 +#define FSL_CHASSIS3_EC2_REGSR_PRTCL_MASK 0x0000000C #define FSL_CHASSIS3_EC2_REGSR_PRTCL_SHIFT 2 #define FSL_CHASSIS3_RCWSR28_SRDS1_PRTCL_MASK 0x001F0000 #define FSL_CHASSIS3_RCWSR28_SRDS1_PRTCL_SHIFT 16 diff --git a/drivers/net/ldpaa_eth/lx2160a.c b/drivers/net/ldpaa_eth/lx2160a.c index 41eff0dd1cff..90ac5db1fec0 100644 --- a/drivers/net/ldpaa_eth/lx2160a.c +++ b/drivers/net/ldpaa_eth/lx2160a.c @@ -93,7 +93,7 @@ void fsl_rgmii_init(void) & FSL_CHASSIS3_EC1_REGSR_PRTCL_MASK; ec >>= FSL_CHASSIS3_EC1_REGSR_PRTCL_SHIFT;

- if (!ec && (wriop_is_enabled_dpmac(17) == -ENODEV)) + if (!ec) wriop_init_dpmac_enet_if(17, PHY_INTERFACE_MODE_RGMII_ID); #endif

@@ -102,7 +102,7 @@ void fsl_rgmii_init(void) & FSL_CHASSIS3_EC2_REGSR_PRTCL_MASK; ec >>= FSL_CHASSIS3_EC2_REGSR_PRTCL_SHIFT;

- if (!ec && (wriop_is_enabled_dpmac(18) == -ENODEV)) + if (!ec) wriop_init_dpmac_enet_if(18, PHY_INTERFACE_MODE_RGMII_ID); #endif }