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

[Rayyan Ansari]

On 16/08/2023 20:56, Rayyan Ansari wrote:
> 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@xxxxxxxxx>
> > > ---
> > >   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.

I looked through my old notes and I was able to get USB host mode (ie 
USB OTG) working but not USB device mode.

> > Thierry

--
Rayyan Ansari
https://ansari.sh