linux-kernel - Re: [PATCH] arm64: tegra: Enable IOMMU for host1x on Tegra132

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Message-ID: <b07819ea-4a96-0906-b8e9-a9b045c37032@ansari.sh>
Date:   Wed, 16 Aug 2023 20:56:30 +0100
From:   Rayyan Ansari <rayyan@...ari.sh>
To:     Thierry Reding <thierry.reding@...il.com>
Cc:     linux-tegra@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Jonathan Hunter <jonathanh@...dia.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: tegra: Enable IOMMU for host1x on Tegra132

On 16/08/2023 17:24, Thierry Reding wrote:
> On Thu, Aug 10, 2023 at 10:45:41PM +0100, Rayyan Ansari wrote:
>> Add the iommu property to the host1x node to register it with its
>> swgroup.
>>
>> Signed-off-by: Rayyan Ansari <rayyan@...ari.sh>
>> ---
>>   arch/arm64/boot/dts/nvidia/tegra132.dtsi | 2 ++
>>   1 file changed, 2 insertions(+)
> 
> Do you happen to have a Tegra132 device that you can test upstream Linux
> on? Just asking out of curiosity because these devices are becoming very
> rare these days and it'd be good to know if people are still using these
> and that recent Linux kernels are still running on them.

I do - I have the Nexus 9. At some point I was trying to mainline it, 
but I stopped as I couldn't manage to get USB working - I only got 
simplefb working. If it would be useful I could see if my old patches 
work now and submit them.

> 
> Thierry

-- 
Rayyan Ansari
https://ansari.sh