[PATCH v7 4/4] thermal: mediatek: add another get_temp ops for thermal sensors

[Daniel Lezcano]

Hi Amjad,

On 24/01/2023 11:08, Amjad Ouled-Ameur wrote:

[ ... ]

>>>
>>> IIUC, there is a sensor per couple of cores. 1 x 2Bigs, 1 x 2Bigs, 1 
>>> x 4 Little, right ?
>>
>> MT8365 SoC has 4 x A53 CPUs. The SoC has 4 thermal zones per sensor. 
>> Thermal zone 0 corresponds
>>
>> to all 4 x A53 CPUs, the other thermal zones (1, 2 and 3) has nothing 
>> to do with CPUs. The cooling device type
>>
>> used for CPUs is passive. FYI, thermal zones 1, 2 and 3 are present in 
>> the SoC for debug-purpose only, they are not supposed
>>
>> to be used for production.
>>
> After reconsidering the fact that zones 1, 2 and 3 are only used for 
> dev/debug, it might be best to avo >
> aggregation as you suggested, and keep only support for zone 0 in this 
> driver. Thus I suggest I send a V8
> 
> where I keep only below fixes for this patch if that's okay with you:
> 
> - Define "raw_to_mcelsius" function pointer for "struct thermal_bank_cfg".
> 
> - Fix "mtk_thermal" variable in mtk_read_temp().
> 
> - Set "mt->raw_to_mcelsius" in probe().
> 
> 
> For zones 1, 2 and 3 we can later add a different driver specific for 
> dev/debug to probe them to
> 
> avoid confusion.

You can add them in the driver and in the device tree, but just add the 
cooling device for the thermal zone 0.


-- 
<http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs

Follow Linaro:  <http://www.facebook.com/pages/Linaro> Facebook |
<http://twitter.com/#!/linaroorg> Twitter |
<http://www.linaro.org/linaro-blog/> Blog