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From: Nicolin Chen <nicolinc@nvidia.com>
To: Jean-Philippe Brucker <jean-philippe@linaro.org>
Cc: <robin.murphy@arm.com>, <will@kernel.org>,
	<lpieralisi@kernel.org>, <linux-arm-kernel@lists.infradead.org>,
	Ketan Patil <ketanp@nvidia.com>
Subject: Re: IOMMU_FWSPEC_PCI_RC_ATS for SMMUv3 with DT configuration?
Date: Wed, 24 Apr 2024 22:11:48 -0700	[thread overview]
Message-ID: <ZinmFBBdj0zwwJ+p@Asurada-Nvidia> (raw)
In-Reply-To: <Zek6Lu7oAsVKsywE@Asurada-Nvidia>

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@nvidia.com>

Thanks!
Nicolin

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      reply	other threads:[~2024-04-25  5:12 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-01 22:00 IOMMU_FWSPEC_PCI_RC_ATS for SMMUv3 with DT configuration? Nicolin Chen
2024-03-04  9:25 ` Jean-Philippe Brucker
2024-03-07  3:53   ` Nicolin Chen
2024-04-25  5:11     ` Nicolin Chen [this message]

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