[PATCH] gpu: host1x: Skip reset assert on Tegra186

Jon Hunter jonathanh at nvidia.com
Thu Feb 15 11:07:29 UTC 2024


On 14/02/2024 11:40, Mikko Perttunen wrote:
> From: Mikko Perttunen <mperttunen at nvidia.com>
> 
> On Tegra186, other software components may rely on the kernel to
> keep Host1x operational even during suspend. As such, as a quirk,
> skip asserting Host1x's reset on Tegra186.
> 
> We don't need to keep the clocks enabled, as BPMP ensures the clock
> stays on while Host1x is being used. On newer SoC's, the reset line
> is inaccessible, so there is no need for the quirk.
> 
> Signed-off-by: Mikko Perttunen <mperttunen at nvidia.com>


We should add the fixes tag ...

Fixes: b7c00cdf6df5 ("gpu: host1x: Enable system suspend callbacks")

... because this fixes a suspend regression on Tegra186.

Thierry, would you be able to add the fixes-tag and send out as a fix 
for v6.8? Otherwise ...

Reviewed-by: Jon Hunter <jonathanh at nvidia.com>
Tested-by: Jon Hunter <jonathanh at nvidia.com>

Thanks!
Jon

-- 
nvpublic


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