Re: [PATCH v3 20/24] pmdomain: core: Default to use of_genpd_sync_state() for genpd providers

[Jon Hunter <jonathanh@nvidia.com>]

On 25/09/2025 23:31, Saravana Kannan wrote:

...

>> I have been doing more testing and do see a lot of "tegra-bpmp bpmp:
>> sync_state() pending due to" on our platforms for basically are driver
>> that is built as a module.
> 
> It being "built as a module" is not reason enough for this warning to
> happen though. One of the main points of fw_devlink is for things to
> work just as well with modules.
> 
> In this particular system, do you never plan to load the modules? Or
> is the module load just missing this timeout by a few seconds or
> something?

We absolutely do load the drivers. Initially, I observed cases where 
drivers are missing, but doing more testing with the necessary drivers 
present, I still see such messages. A lot of our test infrastructure is 
set up to use NFS for mounting to the rootfs and so I am wondering if 
that can also be a factor?

> If these can be turned off, why not turn these off using the sysfs
> file or the timeout commandline option to turn them off? You are
> burning power by leaving these on. A warning seems appropriate to me.

Again the drivers get loaded, so that shouldn't be the case.

Jon

-- 
nvpublic