[PATCH] arm64: dts: renesas: r8a779h0: Add INTC-EX node

[Yoshihiro Shimoda]

Hi Geert-san,

> From: Geert Uytterhoeven, Sent: Wednesday, April 17, 2024 12:40 AM
> 
> Add the device node for the Interrupt Controller for External Devices
> (INTC-EX) on the Renesas R-Car V4M (R8A779H0) SoC, which serves external
> IRQ pins IRQ[0-5].
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>

Thank you for the patch!

Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh at renesas.com>

> ---
> IRQ2 was tested on the Gray Hawk Single development board using
> gpio-keys.  With the default hardware setup, this causes an interrupt
> storm, as expected (pin is shared with MD0).

I tested on the Gray Hawk Single board, and it worked correctly like below:
- If SW5-1 on the SW board turned on, the interrupt happened (as strom).
- After that, if the SW5-1 turned off, the interrupt stopped and /proc/interrupts
  showed the interrupt counts.

So,
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh at renesas.com>

Best regards,
Yoshihiro Shimoda

> To be queued in renesas-devel for v6.10.
> ---
>  arch/arm64/boot/dts/renesas/r8a779h0.dtsi | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/renesas/r8a779h0.dtsi b/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
> index 530219f21295f76f..bd3955316a88c8f2 100644
> --- a/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
> +++ b/arch/arm64/boot/dts/renesas/r8a779h0.dtsi
> @@ -404,6 +404,22 @@ tsc: thermal at e6198000 {
>  			#thermal-sensor-cells = <1>;
>  		};
> 
> +		intc_ex: interrupt-controller at e61c0000 {
> +			compatible = "renesas,intc-ex-r8a779h0", "renesas,irqc";
> +			#interrupt-cells = <2>;
> +			interrupt-controller;
> +			reg = <0 0xe61c0000 0 0x200>;
> +			interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&cpg CPG_MOD 611>;
> +			power-domains = <&sysc R8A779H0_PD_ALWAYS_ON>;
> +			resets = <&cpg 611>;
> +		};
> +
>  		tmu0: timer at e61e0000 {
>  			compatible = "renesas,tmu-r8a779h0", "renesas,tmu";
>  			reg = <0 0xe61e0000 0 0x30>;
> --
> 2.34.1
>