IOMMU_FWSPEC_PCI_RC_ATS for SMMUv3 with DT configuration?

[Nicolin Chen]

Hi Jean,

On Wed, Mar 06, 2024 at 07:53:20PM -0800, Nicolin Chen wrote:
> On Mon, Mar 04, 2024 at 09:25:36AM +0000, Jean-Philippe Brucker wrote:
> > > We have a need to enable ATS on a system using Device Tree. Is
> > > there a suggested way or name of DT binding to add?
> > 
> > "ats-supported" was acked by Rob:
> > 
> > https://lore.kernel.org/linux-iommu/20200311124506.208376-2-jean-philippe@linaro.org/
> > 
> > I don't remember why I didn't follow up with that series, probably just
> > the lack of users at the time (Arm SW model was the only ATS
> > implementation). A simpler implementation would be setting the existing
> > fwspec flag:
> > https://jpbrucker.net/git/linux/commit/?h=sva/current&id=4b6d187154557a7c46c9a67c13453d40a03cc078

> I am out of office this week. So I've asked my team mate to
> get that a try.

My team mate verified this patch using a DT configuration.

Would it be possible for you to respin the of_iommu patch?

If yes, please also add his tag:
Tested-by: Ketan Patil <ketanp at nvidia.com>

Thanks!
Nicolin