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 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.
Therefore, 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.
Signed-off-by: Pankaj Bansal <pankaj.ban...@nxp.com>
---
Notes:
Dependencies:
- http://patchwork.ozlabs.org/patch/990131/
- http://patchwork.ozlabs.org/patch/990093/
drivers/net/ldpaa_eth/lx2160a.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ldpaa_eth/lx2160a.c b/drivers/net/ldpaa_eth/lx2160a.c
index 7dd46c04f6..1fbeb0d14b 100644
--- a/drivers/net/ldpaa_eth/lx2160a.c
+++ b/drivers/net/ldpaa_eth/lx2160a.c
@@ -91,7 +91,7 @@ void fsl_rgmii_init(void)
& FSL_CHASSIS3_EC1_REGSR_PRTCL_MASK;
ec >>= FSL_CHASSIS3_EC1_REGSR_PRTCL_SHIFT;
- if (!ec)
+ if (!ec && (wriop_is_enabled_dpmac(17) == -ENODEV))
wriop_init_dpmac_enet_if(17, PHY_INTERFACE_MODE_RGMII_ID);
#endif
@@ -100,7 +100,7 @@ void fsl_rgmii_init(void)
& FSL_CHASSIS3_EC2_REGSR_PRTCL_MASK;
ec >>= FSL_CHASSIS3_EC2_REGSR_PRTCL_SHIFT;
- if (!ec)
+ if (!ec && (wriop_is_enabled_dpmac(18) == -ENODEV))
wriop_init_dpmac_enet_if(18, PHY_INTERFACE_MODE_RGMII_ID);
#endif
}
--
2.17.1
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