[U-Boot] [PATCH 4/4] net: fec: add fuse check

[Joe Hershberger]

On Thu, Jul 18, 2019 at 10:24 PM Peng Fan <peng.fan at nxp.com> wrote:
>
> Add fuse check for fec. If the fuse indicate the module
> not work in the SoC, let's fail the initialization.

"indicates the module will not work"

>
> Signed-off-by: Peng Fan <peng.fan at nxp.com>
> ---
>  drivers/net/fec_mxc.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
>
> diff --git a/drivers/net/fec_mxc.c b/drivers/net/fec_mxc.c
> index d7c080943a..602b655455 100644
> --- a/drivers/net/fec_mxc.c
> +++ b/drivers/net/fec_mxc.c
> @@ -1185,6 +1185,13 @@ int fecmxc_initialize_multi(bd_t *bd, int dev_id, int phy_id, uint32_t addr)
>  #endif
>         int ret;
>
> +       if (IS_ENABLED(CONFIG_IMX_MODULE_FUSE)) {
> +               if (enet_fused(addr)) {
> +                       printf("Ethernet at 0x%x is fused, disable it\n", addr);

Please reword this. Something like "SoC fuse indicates Ethernet at 0x%x
is unavailable."

> +                       return -ENODEV;
> +               }
> +       }
> +
>  #ifdef CONFIG_FEC_MXC_MDIO_BASE
>         /*
>          * The i.MX28 has two ethernet interfaces, but they are not equal.
> @@ -1323,6 +1330,14 @@ static int fecmxc_probe(struct udevice *dev)
>         uint32_t start;
>         int ret;
>
> +       if (IS_ENABLED(CONFIG_IMX_MODULE_FUSE)) {
> +               if (enet_fused((u32)priv->eth)) {
> +                       printf("Ethernet at 0x%x is fused, disable it\n",

Same.

> +                              (u32)priv->eth);
> +                       return -ENODEV;
> +               }
> +       }
> +
>         if (IS_ENABLED(CONFIG_IMX8)) {
>                 ret = clk_get_by_name(dev, "ipg", &priv->ipg_clk);
>                 if (ret < 0) {
> --
> 2.16.4
>
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