[U-Boot] [PATCH] drivers: net: ldpaa_eth: check if the dpmac is enabled

[Joe Hershberger]

On Fri, Feb 8, 2019 at 2:59 AM Pankaj Bansal <pankaj.bansal at nxp.com> wrote:
>
> 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 at nxp.com>

Acked-by: Joe Hershberger <joe.hershberger at ni.com>