[v9,0/5] thermal: mediatek: Add support for MT8365 SoC

This patchset adds thermal support for MT8365 SoC.

MT8365 has 4 thermal sensors, one for CPUs and the rest for debug/dev
purposes. The CPU thermal zone uses passive cooling device with
CPU{0..3}.

Changes in v9:
- Use delay between bank init and the thermal zone device register.
- Link to v8: https://lore.kernel.org/r/20221018-up-i350-thermal-bringup-v8-0-23e8fbb08837@baylibre.com

Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>
---
Amjad Ouled-Ameur (2):
      thermal: mediatek: add callback for raw to mcelsius conversion
      thermal: mediatek: add delay after thermal banks initialization

Fabien Parent (2):
      dt-bindings: thermal: mediatek: add binding documentation for MT8365 SoC
      thermal: mediatek: add support for MT8365 SoC

Markus Schneider-Pargmann (1):
      thermal: mediatek: control buffer enablement tweaks

 .../bindings/thermal/mediatek-thermal.txt          |   1 +
 drivers/thermal/mtk_thermal.c                      | 117 +++++++++++++++++----
 2 files changed, 96 insertions(+), 22 deletions(-)
---
base-commit: a2c81dc59d41e92362ab7d41d0c15471ea50637d
change-id: 20221018-up-i350-thermal-bringup-ad386d37056f

Best regards,

On 27/01/2023 16:44, Amjad Ouled-Ameur wrote:
> This patchset adds thermal support for MT8365 SoC.
> 
> MT8365 has 4 thermal sensors, one for CPUs and the rest for debug/dev
> purposes. The CPU thermal zone uses passive cooling device with
> CPU{0..3}.
> 
> Changes in v9:
> - Use delay between bank init and the thermal zone device register.
> - Link to v8: https://lore.kernel.org/r/20221018-up-i350-thermal-bringup-v8-0-23e8fbb08837@baylibre.com
> 
> Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>
> ---
> Amjad Ouled-Ameur (2):
>        thermal: mediatek: add callback for raw to mcelsius conversion
>        thermal: mediatek: add delay after thermal banks initialization
> 
> Fabien Parent (2):
>        dt-bindings: thermal: mediatek: add binding documentation for MT8365 SoC
>        thermal: mediatek: add support for MT8365 SoC
> 
> Markus Schneider-Pargmann (1):
>        thermal: mediatek: control buffer enablement tweaks
> 
>   .../bindings/thermal/mediatek-thermal.txt          |   1 +
>   drivers/thermal/mtk_thermal.c                      | 117 +++++++++++++++++----
>   2 files changed, 96 insertions(+), 22 deletions(-)
> ---

Applied, with some changes and the subject fixed:

Subject format for thermal is: thermal/drivers/<thedriver>: [A-Z]*.

Thanks

   -- Daniel

On 1/27/23 22:48, Daniel Lezcano wrote:
> On 27/01/2023 16:44, Amjad Ouled-Ameur wrote:
>> From: Markus Schneider-Pargmann <msp@baylibre.com>
>>
>> Add logic in order to be able to turn on the control buffer on MT8365.
>> This change now allows to have control buffer support for MTK_THERMAL_V1,
>> and it allows to define the register offset, and mask used to enable it.
>>
>> Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
>> Signed-off-by: Fabien Parent <fparent@baylibre.com>
>> Signed-off-by: Amjad Ouled-Ameur <aouledameur@baylibre.com>
>> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
>> ---
>>   drivers/thermal/mtk_thermal.c | 25 ++++++++++++++++++-------
>>   1 file changed, 18 insertions(+), 7 deletions(-)
>>
>> diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c
>> index 8440692e3890..d8ddceb75372 100644
>> --- a/drivers/thermal/mtk_thermal.c
>> +++ b/drivers/thermal/mtk_thermal.c
>> @@ -271,6 +271,9 @@ struct mtk_thermal_data {
>>       bool need_switch_bank;
>>       struct thermal_bank_cfg bank_data[MAX_NUM_ZONES];
>>       enum mtk_thermal_version version;
>> +    u32 apmixed_buffer_ctl_reg;
>> +    u32 apmixed_buffer_ctl_mask;
>> +    u32 apmixed_buffer_ctl_set;
>>   };
>>     struct mtk_thermal {
>> @@ -514,6 +517,9 @@ static const struct mtk_thermal_data mt7622_thermal_data = {
>>       .adcpnp = mt7622_adcpnp,
>>       .sensor_mux_values = mt7622_mux_values,
>>       .version = MTK_THERMAL_V2,
>> +    .apmixed_buffer_ctl_reg = APMIXED_SYS_TS_CON1,
>> +    .apmixed_buffer_ctl_mask = GENMASK(31, 6) | BIT(3),
>> +    .apmixed_buffer_ctl_set = BIT(0),
>>   };
>>     /*
>> @@ -963,14 +969,18 @@ static const struct of_device_id mtk_thermal_of_match[] = {
>>   };
>>   MODULE_DEVICE_TABLE(of, mtk_thermal_of_match);
>>   -static void mtk_thermal_turn_on_buffer(void __iomem *apmixed_base)
>> +static void mtk_thermal_turn_on_buffer(struct mtk_thermal *mt,
>> +                       void __iomem *apmixed_base)
>>   {
>> -    int tmp;
>> +    u32 tmp;
>> +
>> +    if (!mt->conf->apmixed_buffer_ctl_reg)
>> +        return;
>>   -    tmp = readl(apmixed_base + APMIXED_SYS_TS_CON1);
>> -    tmp &= ~(0x37);
>> -    tmp |= 0x1;
>> -    writel(tmp, apmixed_base + APMIXED_SYS_TS_CON1);
>> +    tmp = readl(apmixed_base + mt->conf->apmixed_buffer_ctl_reg);
>> +    tmp &= mt->conf->apmixed_buffer_ctl_mask;
>> +    tmp |= mt->conf->apmixed_buffer_ctl_set;
>> +    writel(tmp, apmixed_base + mt->conf->apmixed_buffer_ctl_reg);
>>       udelay(200);
>>   }
>>   @@ -1070,8 +1080,9 @@ static int mtk_thermal_probe(struct platform_device *pdev)
>>           goto err_disable_clk_auxadc;
>>       }
>>   +    mtk_thermal_turn_on_buffer(mt, apmixed_base);
>> +
>>       if (mt->conf->version == MTK_THERMAL_V2) {
>> -        mtk_thermal_turn_on_buffer(apmixed_base);
>>           mtk_thermal_release_periodic_ts(mt, auxadc_base);
>>       }
>
> This change conflicts with commit 4f2ee0aa2e706
>
> I fixed it with:
>
> -       if (mt->conf->version != MTK_THERMAL_V1) {
> -               mtk_thermal_turn_on_buffer(apmixed_base);
> +       mtk_thermal_turn_on_buffer(apmixed_base);
> +
> +       if (mt->conf->version != MTK_THERMAL_V1)
>                 mtk_thermal_release_periodic_ts(mt, auxadc_base);
> -       }
>
I think it's rather MTK_THERMAL_V2 and not MTK_THERMAL_V1. Other than that, it looks

fine by me, thanks.


Amjad

> Let me know if there is something wrong.
>
>