Re: [PATCH] drm/bridge: adv7511: Clear HPD IRQ before powering on device during resume()

[Luca Ceresoli]

On Fri Dec 19, 2025 at 11:46 AM CET, Biju wrote:
> From: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
>
> On RZ/G3E SMARC EVK using PSCI, s2ram powers down the SoC. Testing ADV7535
> IRQ configured as edge-triggered interrupt on RZ/G3E SMARC EVK shows that
> it is missing HPD IRQ during system resume, as the status change occurs
> before the IRQ/pincontrol resume. Once the status bit is set, there won't
> be any further IRQ unless the status bit is cleared.
>
> Clear any pending HPD IRQs before powering on the ADV7535 device to
> deliver HPD interrupts after resume().
>
> Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>

Reviewed-by: Luca Ceresoli <luca.ceresoli@xxxxxxxxxxx>

--
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com