[PATCH] imx: imx8mn_beacon: Fix USB booting

[sbabic at denx.de]

> The i.MX8M Nano can boot over USB using the boot ROM instead of
> adding extra code to SPL to support USB drivers, etc.  However,
> when booting from USB, the environment doesnt' know where to load
> and causes a hang.  Fix this hang by supporting CONFIG_ENV_IS_NOWHERE=y.
> It only falls back to this condition when booting from USB, so it
> does not impact MMC booting.
> Suggested-by: Michael Nazzareno Trimarchi <michael at amarulasolutions.com>
> Signed-off-by: Adam Ford <aford173 at gmail.com>
> Reviewed-by: Fabio Estevam <festevam at gmail.com>
> diff --git a/configs/imx8mn_beacon_2g_defconfig b/configs/imx8mn_beacon_2g_defconfig
> index 8b98d687ec..1766a43cce 100644
> --- a/configs/imx8mn_beacon_2g_defconfig
> +++ b/configs/imx8mn_beacon_2g_defconfig
> @@ -66,6 +66,7 @@ CONFIG_OF_CONTROL=y
>  CONFIG_SPL_OF_CONTROL=y
>  CONFIG_OF_SPL_REMOVE_PROPS="interrupt-parent interrupts"
>  CONFIG_ENV_OVERWRITE=y
> +CONFIG_ENV_IS_NOWHERE=y
>  CONFIG_ENV_IS_IN_MMC=y
>  CONFIG_SYS_RELOC_GD_ENV_ADDR=y
>  CONFIG_SYS_MMC_ENV_DEV=2
> diff --git a/configs/imx8mn_beacon_defconfig b/configs/imx8mn_beacon_defconfig
> index a707ee664e..8ac36121aa 100644
> --- a/configs/imx8mn_beacon_defconfig
> +++ b/configs/imx8mn_beacon_defconfig
> @@ -66,6 +66,7 @@ CONFIG_CMD_FAT=y
>  CONFIG_OF_CONTROL=y
>  CONFIG_SPL_OF_CONTROL=y
>  CONFIG_ENV_OVERWRITE=y
> +CONFIG_ENV_IS_NOWHERE=y
>  CONFIG_ENV_IS_IN_MMC=y
>  CONFIG_SYS_RELOC_GD_ENV_ADDR=y
>  CONFIG_SYS_MMC_ENV_DEV=2
Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic

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