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

[Daniel Lezcano]

On 15/06/2023 06:04, Peng Fan wrote:
> 
> 
> On 6/15/2023 10:53 AM, Sebastian Krzyszkowiak wrote:
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>>
>> On czwartek, 15 czerwca 2023 04:29:01 CEST Peng Fan wrote:
>>> On 6/8/2023 3:10 AM, Daniel Lezcano wrote:
>>>>
>>>> [...]
>>>>
>>>> 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.
>>
>> I think the idea is not to return a failure in ops->change_mode, but 
>> to move
>> enabling the site in REGS_TMR/REGS_V2_TMSR register from
>> qoriq_tmu_register_tmu_zone to ops->change_mode. 
> 
> But qoriq_tmu_register_tmu_zone will finally call ops->change_mode.
> 
> And it is per zone, so we not able to enable TMR_ME here.
> 
> This way the site will be
>> enabled only for actually existing thermal zones, since those not 
>> described in
>> the device tree won't reach thermal_zone_device_enable.
> 
> No. The TMR_ME is the gate for all sites.

Is it possible to call:

regmap_write(qdata->regmap, REGS_TMR, TMR_ME | TMR_ALPF | sites);
regmap_write(qdata->regmap, REGS_V2_TMSR, sites);

in change_mode:

And after the loop:

regmap_write(qdata->regmap, REGS_TMR, TMR_ME | TMR_ALPF_V2);

?


> 
> Thanks,
> Peng.
>>
>> S.
>>
>>

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