[PATCH] mx6cuboxi: Fix board revision detection

[Christian Gmeiner]

>
> Currently, an i.MX6 Cuboxi board is incorrectly detected
> as the HummingBoard model:
>
> U-Boot 2024.04-rc5 (Mar 26 2024 - 15:59:22 +0100)
>
> CPU:   Freescale i.MX6Q rev1.3 996 MHz (running at 792 MHz)
> CPU:   Extended Commercial temperature grade (-20C to 105C) at 26C
> Reset cause: POR
> Model: SolidRun HummingBoard2 Dual/Quad (1.5som+emmc)
> gpio at 20a4000: set_dir_flags: error: gpio GPIO3_8 not reserved
> gpio at 20a4000: get_value: error: gpio GPIO3_8 not reserved
> gpio at 20a8000: set_dir_flags: error: gpio GPIO4_4 not reserved
> gpio at 20a8000: get_value: error: gpio GPIO4_4 not reserved
> gpio at 20b0000: set_dir_flags: error: gpio GPIO6_9 not reserved
> gpio at 20b0000: get_value: error: gpio GPIO6_9 not reserved
> Board: MX6 HummingBoard
> DRAM:  2 GiB
> ...
>
> This error happens because request_detect_gpios() uses the GPIO DM
> API, but board_type() still uses the legacy non-DM GPIO API.
>
> Fix it by using the GPIO DM API in board_type() to read the
> board revision pins in SPL.
>
> Reported-by: Christian Gmeiner <cgmeiner at igalia.com>
> Signed-off-by: Fabio Estevam <festevam at gmail.com>

Tested-by: Christian Gmeiner <cgmeiner at igalia.com>

-- 
greets
--
Christian Gmeiner, MSc

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