Re: [PATCH] media: rkisp1: Depend on PM

From: Laurent Pinchart

Date: Mon Nov 02 2026 - 18:43:09 EST


On Tue, Nov 03, 2026 at 01:25:45AM +0200, Igor Velkov wrote:
> On Tue, Nov 03, 2026, Laurent Pinchart wrote:
> > What does the driver bind to when running on a system that has PM=n ? On
> > which platform can that happen ?
>
> None that I can name: the nodes exist only on Rockchip and i.MX8 boards,
> and those select PM. The patch came out of the rkvdec thread, where Nicolas
> pointed out that with PM=n the first MMIO access can hang and asked to
> check similar drivers [1]; rkisp1 and rga had the same pattern. If that
> case is not worth guarding, I'll drop it.

Given that it can't happen on any platform, I don't think the patch is
needed.

> [1] https://lore.kernel.org/r/8aafdbbf04a0d939c6b4d7d5577d97bb58d1c439.camel@xxxxxxxxxxxxx

--
Regards,

Laurent Pinchart