[PATCH v2 09/13] arm64: dts: r8a7795: salvator-x: Add panel backlight support

[Geert Uytterhoeven]

Hi Laurent,

On Sat, Nov 19, 2016 at 4:28 AM, Laurent Pinchart
<laurent.pinchart+renesas at ideasonboard.com> wrote:
> The panel backlight is controlled through a GPIO and a PWM channel.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas at ideasonboard.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas at glider.be>

> --- a/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
> +++ b/arch/arm64/boot/dts/renesas/r8a7795-salvator-x.dts
> @@ -178,6 +178,16 @@
>                         };
>                 };
>         };
> +
> +       backlight: backlight {
> +               compatible = "pwm-backlight";
> +               pwms = <&pwm1 0 50000>;
> +
> +               brightness-levels = <256 128 64 16 8 4 0>;

Would it make sense to define more and/or linear levels?

> +               default-brightness-level = <6>;

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

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