linux-kernel - Re: [PATCH 3/3] ARM: dts: vt8500: list all four timer interrupts

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Message-ID: <8d3c2ab5-dfc0-4a65-94c8-48a94c850aba@kernel.org>
Date: Wed, 7 May 2025 06:32:26 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Alexey Charkov <alchark@...il.com>,
 Daniel Lezcano <daniel.lezcano@...aro.org>,
 Thomas Gleixner <tglx@...utronix.de>, Rob Herring <robh@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 devicetree@...r.kernel.org
Subject: Re: [PATCH 3/3] ARM: dts: vt8500: list all four timer interrupts

On 06/05/2025 22:06, Alexey Charkov wrote:
> VIA/WonderMedia SoC timer can generate up to four interrupts corresponding
> to four timer match registers (firing when the 32-bit freerunning clock
> source counter matches either of the match registers, respectively).
> 
> List all four interrupts in device trees.
> 
> This also enables the system event timer to use a match register other
> than 0, which can then in turn be used as a system watchdog (watchdog
> function is not available on other channels)
> 
> Signed-off-by: Alexey Charkov <alchark@...il.com>
> ---
>  arch/arm/boot/dts/vt8500/vt8500.dtsi | 2 +-
>  arch/arm/boot/dts/vt8500/wm8505.dtsi | 2 +-
>  arch/arm/boot/dts/vt8500/wm8650.dtsi | 2 +-
>  arch/arm/boot/dts/vt8500/wm8750.dtsi | 2 +-
>  arch/arm/boot/dts/vt8500/wm8850.dtsi | 2 +-
>  5 files changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/vt8500/vt8500.dtsi b/arch/arm/boot/dts/vt8500/vt8500.dtsi
> index 2ba021585d4889f29777a12473964c29f999f3a0..d1dd37220d41becece5d24fbb19aa71b01723e35 100644
> --- a/arch/arm/boot/dts/vt8500/vt8500.dtsi
> +++ b/arch/arm/boot/dts/vt8500/vt8500.dtsi
> @@ -111,7 +111,7 @@ clkuart3: uart3 {
>  		timer@...30100 {
>  			compatible = "via,vt8500-timer";
>  			reg = <0xd8130100 0x28>;
> -			interrupts = <36>;
> +			interrupts = <36>, <37>, <38>, <39>;

You need to update the binding, preferably first convert it to DT schema.



Best regards,
Krzysztof