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drivers: net: ldpaa_eth: check if the dpmac is enabled

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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.bansal@nxp.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Reviewed-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
This commit is contained in:
Pankaj Bansal 2019-02-08 08:59:24 +00:00 committed by Prabhakar Kushwaha
parent 9ba5e5bc26
commit 82fadccccf
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ldpaa_eth/lx2160a.c
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@ -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
}