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From: Dan Scally <dan.scally@ideasonboard.com>
To: Linus Walleij <linusw@kernel.org>, Li Youhong <dayou5941@163.com>,
	Jacopo Mondi <jacopo.mondi@ideasonboard.com>,
	Mauro Carvalho Chehab <mchehab@kernel.org>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Hans Verkuil <hverkuil+cisco@kernel.org>,
	Nayden Kanchev <nayden.kanchev@arm.com>
Cc: linux-media@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/3] dt-bindings: media: mali-c55: Allow wakeup source
Date: Wed, 7 Oct 2026 10:28:58 +0100	[thread overview]
Message-ID: <f7987857-7516-4184-9a50-2b42a2d01234@ideasonboard.com> (raw)
In-Reply-To: <20260929-mali-c55-irq-supend-resume-v1-1-e3af34afff12@kernel.org>

Hi Linus, thanks for the patchset

On 29/09/2026 13:02, Linus Walleij wrote:
> The Mali-C55 interrupt can be wired as a wake source on platforms that
> support it. Use the standard wakeup-source property.

That's interesting! How's that work, though? In the RZ/V2H particularly the ISP is in an offline 
mode, so I'm struggling to see how one could trigger the interrupt whilst the device is suspended, 
since you'd need to instruct the IVC to queue a frame.

Thanks
Dan

> Assisted-by: LLM
> Signed-off-by: Linus Walleij <linusw@kernel.org>
> ---
>   Documentation/devicetree/bindings/media/arm,mali-c55.yaml | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/media/arm,mali-c55.yaml b/Documentation/devicetree/bindings/media/arm,mali-c55.yaml
> index fc4fcd19922a..acd57799ccd0 100644
> --- a/Documentation/devicetree/bindings/media/arm,mali-c55.yaml
> +++ b/Documentation/devicetree/bindings/media/arm,mali-c55.yaml
> @@ -20,6 +20,8 @@ properties:
>     interrupts:
>       maxItems: 1
>   
> +  wakeup-source: true
> +
>     clocks:
>       items:
>         - description: ISP Video Clock
> 


  reply	other threads:[~2026-10-07  9:29 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-09-29 12:02 [PATCH 0/3] media: mali-c55: Fix IRQ lifetime and wake handling Linus Walleij
2026-09-29 12:02 ` [PATCH 1/3] dt-bindings: media: mali-c55: Allow wakeup source Linus Walleij
2026-10-07  9:28   ` Dan Scally [this message]
2026-10-08 13:22     ` Linus Walleij
2026-09-29 12:02 ` [PATCH 2/3] media: mali-c55: Keep IRQ requested during suspend Linus Walleij
2026-10-07 10:12   ` Dan Scally
2026-09-29 12:02 ` [PATCH 3/3] media: mali-c55: Keep ISP powered while IRQ wake is armed Linus Walleij
2026-10-06 11:43 ` [PATCH 0/3] media: mali-c55: Fix IRQ lifetime and wake handling Lad, Prabhakar
2026-10-08  9:26   ` Linus Walleij

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