Re: [PATCH net-next 4/4] staging: mt7621-dts: enable MT7530 interrupt controller

[Vladimir Oltean]

On Thu, Apr 29, 2021 at 02:21:30PM +0800, DENG Qingfang wrote:
> Enable MT7530 interrupt controller in the MT7621 SoC.
> 
> Signed-off-by: DENG Qingfang <dqfext@xxxxxxxxx>
> ---
> RFC v4 -> PATCH v1:
> - No changes.
> 
>  drivers/staging/mt7621-dts/mt7621.dtsi | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/staging/mt7621-dts/mt7621.dtsi b/drivers/staging/mt7621-dts/mt7621.dtsi
> index 16fc94f65486..0f7e487883a5 100644
> --- a/drivers/staging/mt7621-dts/mt7621.dtsi
> +++ b/drivers/staging/mt7621-dts/mt7621.dtsi
> @@ -447,6 +447,10 @@ switch0: switch0@0 {
>  				mediatek,mcm;
>  				resets = <&rstctrl 2>;
>  				reset-names = "mcm";
> +				interrupt-controller;
> +				#interrupt-cells = <1>;
> +				interrupt-parent = <&gic>;
> +				interrupts = <GIC_SHARED 23 IRQ_TYPE_LEVEL_HIGH>;
>  
>  				ports {
>  					#address-cells = <1>;
> -- 
> 2.25.1
> 

I don't remember if I mentioned this before, but a short-hand way of
expressing this is using:

	interrupts-extended = <&gic GIC_SHARED 23 IRQ_TYPE_LEVEL_HIGH>;

but the entire drivers/staging/mt7621-dts/mt7621.dtsi file uses
interrupt-parent, so this is fine.

Also, I panicked for a second thinking that this is the ARM GIC which
supports the GIC_SHARED flag, but I see that mt7621 is MIPS.

Reviewed-by: Vladimir Oltean <olteanv@xxxxxxxxx>