linux-kernel - Re: [PATCH v9,4/7] thermal: mediatek: Add LVTS driver for mt8192 thermal zones

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Date:   Fri, 26 Aug 2022 10:05:52 +0200
From:   Balsam CHIHI <bchihi@...libre.com>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:     rafael@...nel.org, rui.zhang@...el.com, amitk@...nel.org,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        khilman@...libre.com, mka@...omium.org, robh+dt@...nel.org,
        krzk+dt@...nel.org, matthias.bgg@...il.com, p.zabel@...gutronix.de,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, james.lo@...iatek.com,
        fan.chen@...iatek.com, louis.yu@...iatek.com,
        rex-bc.chen@...iatek.com, abailon@...libre.com
Subject: Re: [PATCH v9,4/7] thermal: mediatek: Add LVTS driver for mt8192
 thermal zones

Hello Daniel,

Thank you for the feedback.

I hope this information will explain better the LVTS Driver.
I will add this like the following.
Is this ok for you?

[v9,7/7] thermal: mediatek: Add LVTS driver settings for mt8195 thermal zones
One Clock and one Reset for Thermal.
Thermal have two domain : CPU related (mcu) and non-CPU related (ap).
TC : Thermal Controller to control the thermal sensor's HW behavior.
TS : Thermal Sensor for measuring temperature the HW module.
thermal
├── ap
│ ├── tc_0
│ │ ├── TS4_0 - vpu1
│ │ └── TS4_1 - vpu2
│ ├── tc_1
│ │ ├── TS5_0 - gpu1
│ │ └── TS5_1 - gpu2
│ ├── tc_2
│ │ ├── TS6_0 - vdec
│ │ ├── TS6_1 - img
│ │ └── TS6_2 - infra
│ └── tc_3
│ ├── TS7_0 - cam1
│ └── TS7_1 - cam2
└── mcu
├── tc_0
│ ├── TS1_0 - cpu_big1
│ └── TS1_1 - cpu_big2
├── tc_1
│ ├── TS2_0 - cpu_big3
│ └── TS2_1 - cpu_big4
└── tc_2
├── TS3_0 - cpu_little1
├── TS3_1 - cpu_little2
├── TS3_2 - cpu_little3
└── TS3_3 - cpu_little4

[v9,4/7] thermal: mediatek: Add LVTS driver for mt8192 thermal zones
One Clock and one Reset for Thermal.
Thermal have two domain : CPU related (mcu) and non-CPU related (ap).
TC : Thermal Controller to control the thermal sensor's HW behavior.
TS : Thermal Sensor for measuring temperature the HW module.
thermal
├── ap
│ ├── tc_0
│ │ ├── TS4_0 - vpu1
│ │ └── TS4_1 - vpu2
│ ├── tc_1
│ │ ├── TS5_0 - gpu1
│ │ └── TS5_1 - gpu2
│ ├── tc_2
│ │ ├── TS6_0 - infra
│ │ └── TS6_1 - cam
│ └── tc_3
│ ├── TS7_0 - md2
│ └── TS7_1 - md3
| └── TS6_2 - md1
└── mcu
├── tc_0
│ ├── TS1_0 - cpu_big1
│ └── TS1_1 - cpu_big2
├── tc_1
│ ├── TS2_0 - cpu_big3
│ └── TS2_1 - cpu_big4
└── tc_2
├── TS3_0 - cpu_little1
├── TS3_1 - cpu_little2
├── TS3_2 - cpu_little3
└── TS3_3 - cpu_little4

Best regards,
Balsam.

On Thu, Aug 25, 2022 at 7:29 PM Daniel Lezcano
<daniel.lezcano@...aro.org> wrote:
>
>
> Hi Balsam,
>
> On 17/08/2022 10:07, bchihi@...libre.com wrote:
> > From: Michael Kao <michael.kao@...iatek.com>
> >
> > Add LVTS v4 (Low Voltage Thermal Sensor) driver to report junction
> > temperatures in MediaTek SoC mt8192 and register the maximum temperature
> > of sensors and each sensor as a thermal zone.
>
> Thanks for your work
>
> First of all, the patch is way too big.
>
> The organization of the data is hard to understand.
>
> Could you give a description of the sensors, how they are organized ?
>
> I can see the there are 'tc' and each have a group of sensing points? Is
> that correct? Do have the 'tc's a shared clock? etc ...
>
> I have another email with the comments inline but without more insights
> on the hardware it is difficult to review accurately. This driver looks
> more complex than the other ones I've reviewed. At least that is what
> looks like with the different macros names found.
>
>
>
> --
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