Hi,
On Sat, 10 Mar 2018 09:19:56 +0800 Peng Fan wrote:
> On i.MX6SX, 6UL and 7D, there are two enet controllers each has a
> MDIO port. But Some boards share one MDIO port for the two enets. So
> introduce a configuration CONFIG_FEC_MXC_MDIO_BASE to indicate
> the MDIO port for sharing.
>
This is already the case for i.MX28. There is no need to implement a
second mechanism to achieve the same result.
> Signed-off-by: Peng Fan <peng....@nxp.com>
> ---
> drivers/net/Kconfig | 7 +++++++
> drivers/net/fec_mxc.c | 9 +++++++++
> 2 files changed, 16 insertions(+)
>
> diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
> index de1947ccc1..3a468a7c59 100644
> --- a/drivers/net/Kconfig
> +++ b/drivers/net/Kconfig
> @@ -147,6 +147,13 @@ config ETHOC
> help
> This MAC is present in OpenRISC and Xtensa XTFPGA boards.
>
> +config FEC_MXC_MDIO_BASE
> + hex "MDIO base address for the FEC controller"
> + depends on FEC_MXC
> + help
> + This specifies the MDIO registers base address. It is used when
> + two FEC controllers share MDIO bus.
> +
> config FEC_MXC
> bool "FEC Ethernet controller"
> depends on MX5 || MX6
> diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
> index 2c3171ecc9..e8f8fef66a 100644
> --- a/drivers/net/fec_mxc.c
> +++ b/drivers/net/fec_mxc.c
> @@ -1161,8 +1161,12 @@ int fecmxc_initialize_multi(bd_t *bd, int dev_id, int
> phy_id, uint32_t addr)
> * Only the first one can access the MDIO bus.
> */
> base_mii = MXS_ENET0_BASE;
> +#else
> +#ifdef CONFIG_FEC_MXC_MDIO_BASE
> + base_mii = CONFIG_FEC_MXC_MDIO_BASE;
> #else
> base_mii = addr;
> +#endif
> #endif
> debug("eth_init: fec_probe(bd, %i, %i) @ %08x\n", dev_id, phy_id, addr);
> bus = fec_get_miibus(base_mii, dev_id);
> @@ -1274,7 +1278,12 @@ static int fecmxc_probe(struct udevice *dev)
> fec_reg_setup(priv);
>
> priv->dev_id = dev->seq;
> +
> +#ifdef CONFIG_FEC_MXC_MDIO_BASE
> + bus = fec_get_miibus((ulong)CONFIG_FEC_MXC_MDIO_BASE, dev->seq);
> +#else
> bus = fec_get_miibus((ulong)priv->eth, dev->seq);
> +#endif
> if (!bus) {
> ret = -ENOMEM;
> goto err_mii;
Lothar Waßmann
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