On Sat, Jan 14, 2023 at 11:56 PM Adam Ford <aford173@xxxxxxxxx> wrote:
> The board used to originally introduce the Beacon Embedded
> RZ/G2[M/N/H] boards had a GPIO expander with address 20, but
> this was change when the final board went to production.
>
> The production boards changed both the part itself and
> the address. With the incorrect address, the LCD cannot
> come up. If the LCD fails, the rcar-du driver fails to come up,
> and that also breaks HDMI.
>
> Pre-release board were not shipped to the general public, so it
> should be safe to push this as a fix. Anyone with a production
> board would have video fail due to this GPIO expander change.
>
> Fixes: a1d8a344f1ca ("arm64: dts: renesas: Introduce r8a774a1-beacon-rzg2m-kit")
> Signed-off-by: Adam Ford <aford173@xxxxxxxxx>
> ---
> V2: Update compatible to reflect the part change.
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
i.e. will queue in renesas-devel for v6.3.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
