Re: [PATCH 2/3] thermal: qoriq_thermal: only enable supported sensors

[Peng Fan <peng.fan@oss.nxp.com>]

On 6/8/2023 3:10 AM, Daniel Lezcano wrote:
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> On 07/06/2023 19:42, Sebastian Krzyszkowiak wrote:
> 
> [ ... ]
> 
>>> Hence, the thermal_zone_device_register_with_trips() is not called, the
>>> thermal zone is not created neither updated.
>>
>> Again - that's not the case the check is there for. It's there for 
>> zones that
>> do exist and that do get registered, because REGS_TMR only gets set 
>> *after*
>> all the zones are already registered (the driver as it is right now 
>> does not
>> know which sites it should enable before registering the zones). 
>> Because of
>> that, the first value a zone gets after being registered is always bogus,
>> because no monitoring site has been enabled yet at all.
> 
> Ok, I misunderstood. I thought that was for failing registered thermal 
> zone.
> 
> Would enabling the site in ops->change_mode do the trick ?

No. ops->change_mode not able to do the trick.

devm_thermal_of_zone_register->thermal_zone_device_enable
->thermal_zone_device_set_mode->__thermal_zone_device_update.part.0
->__thermal_zone_get_temp

The thermal_zone_device_set_mode will call change_mode, if return
fail here, the thermal zone will fail to be registered.

Thanks,
Peng.

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