Re: [PATCH] Revert "arm64: tegra: Add interconnect properties for Tegra210"

Re: [PATCH] Revert "arm64: tegra: Add interconnect properties for Tegra210"

[Thierry Reding]

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On Wed, Dec 17, 2025 at 10:47:44AM +0000, Jon Hunter wrote:
> Commit 59a42707a094 ("arm64: tegra: Add interconnect properties for
> Tegra210") populated interconnect properties for Tegra210 and this is
> preventing the Tegra DRM driver from probing successfully. The following
> error is observed on boot ...
> 
>  drm drm: failed to initialize 54240000.dc: -517
> 
> For now revert this change, until a fix is available.
> 
> Fixes: 59a42707a094 ("arm64: tegra: Add interconnect properties for Tegra210")
> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
> ---
>  arch/arm64/boot/dts/nvidia/tegra210.dtsi | 24 ------------------------
>  1 file changed, 24 deletions(-)

Hi Arnd,

this is the only patch that I think we need in v6.19 for now, so do you
want me to send a PR or would you rather pick this up directly?

Here's a link to the patchwork for this, for convenience:

	https://patchwork.ozlabs.org/project/linux-tegra/patch/20251217104744.184153-1-jonathanh@nvidia.com/

Acked-by: Thierry Reding <treding@nvidia.com>

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Re: [PATCH] Revert "arm64: tegra: Add interconnect properties for Tegra210"

[Jon Hunter]

Hi Arnd,

On 18/12/2025 11:56, Thierry Reding wrote:
> On Wed, Dec 17, 2025 at 10:47:44AM +0000, Jon Hunter wrote:
>> Commit 59a42707a094 ("arm64: tegra: Add interconnect properties for
>> Tegra210") populated interconnect properties for Tegra210 and this is
>> preventing the Tegra DRM driver from probing successfully. The following
>> error is observed on boot ...
>>
>>   drm drm: failed to initialize 54240000.dc: -517
>>
>> For now revert this change, until a fix is available.
>>
>> Fixes: 59a42707a094 ("arm64: tegra: Add interconnect properties for Tegra210")
>> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
>> ---
>>   arch/arm64/boot/dts/nvidia/tegra210.dtsi | 24 ------------------------
>>   1 file changed, 24 deletions(-)
> 
> Hi Arnd,
> 
> this is the only patch that I think we need in v6.19 for now, so do you
> want me to send a PR or would you rather pick this up directly?
> 
> Here's a link to the patchwork for this, for convenience:
> 
> 	https://patchwork.ozlabs.org/project/linux-tegra/patch/20251217104744.184153-1-jonathanh@nvidia.com/
> 
> Acked-by: Thierry Reding <treding@nvidia.com>


Please can you let us know if you can pick this up as a fix for v6.19? 
This is still the only fix we have outstanding that needs to be merged.

Thanks!
Jon

-- 
nvpublic

Re: [PATCH] Revert "arm64: tegra: Add interconnect properties for Tegra210"

[Arnd Bergmann]

On Thu, Jan 15, 2026, at 10:50, Jon Hunter wrote:
> Hi Arnd,
>
> On 18/12/2025 11:56, Thierry Reding wrote:
>> On Wed, Dec 17, 2025 at 10:47:44AM +0000, Jon Hunter wrote:
>>> Commit 59a42707a094 ("arm64: tegra: Add interconnect properties for
>>> Tegra210") populated interconnect properties for Tegra210 and this is
>>> preventing the Tegra DRM driver from probing successfully. The following
>>> error is observed on boot ...
>>>
>>>   drm drm: failed to initialize 54240000.dc: -517
>>>
>>> For now revert this change, until a fix is available.
>>>
>>> Fixes: 59a42707a094 ("arm64: tegra: Add interconnect properties for Tegra210")
>>> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
>>> ---
>>>   arch/arm64/boot/dts/nvidia/tegra210.dtsi | 24 ------------------------
>>>   1 file changed, 24 deletions(-)
>> 
>> Hi Arnd,
>> 
>> this is the only patch that I think we need in v6.19 for now, so do you
>> want me to send a PR or would you rather pick this up directly?
>> 
>> Here's a link to the patchwork for this, for convenience:
>> 
>> 	https://patchwork.ozlabs.org/project/linux-tegra/patch/20251217104744.184153-1-jonathanh@nvidia.com/
>> 
>> Acked-by: Thierry Reding <treding@nvidia.com>
>
>
> Please can you let us know if you can pick this up as a fix for v6.19? 
> This is still the only fix we have outstanding that needs to be merged.

Sorry I missed the earlier message. I've applied it now, but in
the future please forward patches to soc@lists.linux.dev if you
want make sure they don't get lost. A pull request or a separate
patch works just as well, but sending it to the list means it
shows up in patchwork[1].

     Arnd

[1] https://patchwork.kernel.org/project/linux-soc/list/

Re: [PATCH] Revert "arm64: tegra: Add interconnect properties for Tegra210"

[Thierry Reding]

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On Thu, Jan 15, 2026 at 05:41:51PM +0100, Arnd Bergmann wrote:
> On Thu, Jan 15, 2026, at 10:50, Jon Hunter wrote:
> > Hi Arnd,
> >
> > On 18/12/2025 11:56, Thierry Reding wrote:
> >> On Wed, Dec 17, 2025 at 10:47:44AM +0000, Jon Hunter wrote:
> >>> Commit 59a42707a094 ("arm64: tegra: Add interconnect properties for
> >>> Tegra210") populated interconnect properties for Tegra210 and this is
> >>> preventing the Tegra DRM driver from probing successfully. The following
> >>> error is observed on boot ...
> >>>
> >>>   drm drm: failed to initialize 54240000.dc: -517
> >>>
> >>> For now revert this change, until a fix is available.
> >>>
> >>> Fixes: 59a42707a094 ("arm64: tegra: Add interconnect properties for Tegra210")
> >>> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
> >>> ---
> >>>   arch/arm64/boot/dts/nvidia/tegra210.dtsi | 24 ------------------------
> >>>   1 file changed, 24 deletions(-)
> >> 
> >> Hi Arnd,
> >> 
> >> this is the only patch that I think we need in v6.19 for now, so do you
> >> want me to send a PR or would you rather pick this up directly?
> >> 
> >> Here's a link to the patchwork for this, for convenience:
> >> 
> >> 	https://patchwork.ozlabs.org/project/linux-tegra/patch/20251217104744.184153-1-jonathanh@nvidia.com/
> >> 
> >> Acked-by: Thierry Reding <treding@nvidia.com>
> >
> >
> > Please can you let us know if you can pick this up as a fix for v6.19? 
> > This is still the only fix we have outstanding that needs to be merged.
> 
> Sorry I missed the earlier message. I've applied it now, but in
> the future please forward patches to soc@lists.linux.dev if you
> want make sure they don't get lost. A pull request or a separate
> patch works just as well, but sending it to the list means it
> shows up in patchwork[1].
> 
>      Arnd
> 
> [1] https://patchwork.kernel.org/project/linux-soc/list/

Thanks Arnd. I'll keep that list in mind for the future.

Thierry

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