linux-kernel - Re: [Patch v1] iommu: arm-smmu: Use arm-smmu-nvidia impl for Tegra234

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Message-ID: <YkQy4W07fe+PlcT/@orome>
Date:   Wed, 30 Mar 2022 12:37:21 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Joerg Roedel <joro@...tes.org>
Cc:     Ashish Mhetre <amhetre@...dia.com>, jonathanh@...dia.com,
        vdumpa@...dia.com, will@...nel.org, robin.murphy@....com,
        linux-arm-kernel@...ts.infradead.org,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        linux-tegra@...r.kernel.org, Snikam@...dia.com,
        mperttunen@...dia.com
Subject: Re: [Patch v1] iommu: arm-smmu: Use arm-smmu-nvidia impl for Tegra234

On Tue, Mar 29, 2022 at 10:14:36AM +0530, Ashish Mhetre wrote:
> Tegra234 has 2 pairs of ARM MMU-500 instances. Each pair is used
> together and should be programmed identically.
> Add compatible string of Tegra234 iommu nodes in arm_smmu_impl_init()
> so that arm-smmu-nvidia implementation will be used for programming
> these SMMU instances.
> 
> Signed-off-by: Ashish Mhetre <amhetre@...dia.com>
> ---
>  drivers/iommu/arm/arm-smmu/arm-smmu-impl.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)

I already sent out this patch a couple of months ago, though I realize
that it still hasn't been applied:

	http://patchwork.ozlabs.org/project/linux-tegra/list/?series=276030

Joerg, any chance we can still get that series into v5.18? I've already
applied patch 4 given that Rob had acked the DT bindings changes. I know
it's a bit late, but this has been on the list for a couple of months
and has Rob's Reviewed-by on the bindings and Will's Acked-by on the ARM
SMMU driver patches.

If it's too late for v5.18, is there anything else you're waiting for so
that this can go into v5.19?

Thanks,
Thierry

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