[PATCH] imx9: Improve boot device auto-selection

[Peng Fan]

> Subject: Re: [PATCH] imx9: Improve boot device auto-selection
> 
> On Wed, Oct 16, 2024 at 4:42 PM Szőke Benjamin
> <egyszeregy at freemail.hu> wrote:
> 
> > You can use only one of config from CONFIG_ENV_IS_IN_MMC=y and
> > CONFIG_ENV_IS_NOWHERE=y in U-boot config in same time.
> 
> imx93_11x11_evk_defconfig selects both CONFIG_ENV_IS_IN_MMC=y
> and CONFIG_ENV_IS_NOWHERE=y.
> 
> > If you like to use CONFIG_ENV_IS_NOWHERE=y, these codes in the
> patched
> > source files will be not part of the build, and the autodetection of
> > the boot mode will never work. At the moment it works only if you
> use
> > CONFIG_ENV_IS_IN_MMC=y in U-boot config but it should work also
> in
> > case of use CONFIG_ENV_IS_NOWHERE=y option also.
> 
> But like I said imx93_11x11_evk_defconfig selects both
> CONFIG_ENV_IS_IN_MMC=y and CONFIG_ENV_IS_NOWHERE=y.
> 
> I am still confused by your patch.
> 
> I would like to get a feedback from Peng Fan.

In UUU boot mode, we use the env inside U-Boot proper, so
it is NOWHERE.

In this patch, I think use changing to mmc for NOWHERE
may break the rule.

Thanks,
Peng.