[PATCH] board: phytec: phycore-imx93: Fix i.MX93 voltage modes

[Fabio Estevam]

On Fri, Sep 19, 2025 at 4:51 AM Primoz Fiser <primoz.fiser at norik.com> wrote:
>
> Fix support for i.MX93 voltage modes on phyCORE-i.MX93 SoM boards.
>
> First of all, Kconfig option CONFIG_IMX9_LOW_DRIVE_MODE is gone since
> commit c9efcad23741 ("imx93_evk: Remove CONFIG_IMX9_LOW_DRIVE_MODE and
> ld defconfig") and was replaced by runtime detection mechanism. Thus
> lets use is_voltage_mode() instead of Kconfig to detect CPU type and
> select proper voltage mode.
>
> Secondly, 1400MHz ND mode (Nominal Drive) requiring 0.85V BUCK voltage
> was not supported with current power_init_board() PMIC settings. Add
> check also for this CPU type and set BUCK voltage accordingly.
>
> Last but not least, add printf() printouts about PMIC voltage mode to
> the console. This makes it more apparent and verbose about voltage mode
> in use. Also our internal tests depend on this printout to catch issues
> with i.MX93 CPU types and set PMIC voltage modes.
>
> Signed-off-by: Primoz Fiser <primoz.fiser at norik.com>

Applied to -master, thanks.