Re: [PATCH] arm64: dts: renesas: falcon-cpu: Use INTC_EX for SN65DSI86

[Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>]

Hi Kieran,

On Fri, Mar 4, 2022 at 12:41 PM Kieran Bingham
<kieran.bingham+renesas@xxxxxxxxxxxxxxxx> wrote:
> The INTC block is a better choice for handling the interrupts on the V3U
> as the INTC will always be powered, while the GPIO block may be
> de-clocked if not in use. Further more, it may be likely to have a lower
> power consumption as it does not need to drive the pins.
>
> Switch the interrupt parent and interrupts definition from gpio1 to
> intc_ex, allowing the PFC to configure the pin muxing accordingly.
>
> Signed-off-by: Kieran Bingham <kieran.bingham+renesas@xxxxxxxxxxxxxxxx>

Thanks for your patch!

> --- a/arch/arm64/boot/dts/renesas/r8a779a0-falcon-cpu.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a779a0-falcon-cpu.dtsi
> @@ -198,8 +198,8 @@ bridge@2c {
>                 clocks = <&sn65dsi86_refclk>;
>                 clock-names = "refclk";
>
> -               interrupt-parent = <&gpio1>;
> -               interrupts = <24 IRQ_TYPE_LEVEL_HIGH>;
> +               interrupt-parent = <&intc_ex>;
> +               interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
>
>                 vccio-supply = <&reg_1p8v>;
>                 vpll-supply = <&reg_1p8v>;

The above is correct, but you forgot to configure pin control for the
irq0 pin.

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