linux-kernel - Re: [v4,0/7] Add Mediatek thermal dirver and dtsi

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Date:   Fri, 22 May 2020 12:09:31 +0800
From:   Michael Kao <michael.kao@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>
CC:     Zhang Rui <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>, <hsinyi@...omium.org>,
        <linux-pm@...r.kernel.org>, <srv_heupstream@...iatek.com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [v4,0/7] Add Mediatek thermal dirver and dtsi

On Thu, 2020-05-21 at 14:51 +0200, Matthias Brugger wrote:
> Hi Michael,
> 
> On 23/03/2020 13:15, Michael Kao wrote:
> > This patchset supports for MT8183 chip to mtk_thermal.c.
> > Add thermal zone of all the thermal sensor in SoC for
> > another get temperatrue. They don't need to thermal throttle.
> > And we bind coolers for thermal zone nodes of cpu_thermal.
> > 
> > Rebase to kernel-5.6-rc1.
> > 
> > Update content:
> > 
> > [1/7]
> >     - Squash thermal zone settings in the dtsi from [v3,5/8]
> >       arm64: dts: mt8183: Increase polling frequency for CPU thermal zone
> > 
> >     - Remove the property of interrupts and mediatek,hw-reset-temp
> > 
> > [2/7]
> >     - Correct commit message
> > 
> > [4/7]
> >     - Change the target temperature to the 80C and change the commit message
> > 
> > [6/7]
> >     - Adjust newline alignment
> > 
> >     - Fix the judgement on the return value of registering thermal zone
> > 
> > This patch series base on these patches [1].
> > 
> > [v7,3/3] PM / AVS: SVS: Introduce SVS engine (https://patchwork.kernel.org/patch/11439829/)
> > 
> > Matthias Kaehlcke (1):
> >   arm64: dts: mt8183: Configure CPU cooling
> > 
> > Michael Kao (6):
> >   arm64: dts: mt8183: add thermal zone node
> >   arm64: dts: mt8183: add dynamic power coefficients
> >   arm64: dts: mt8183: Add #cooling-cells to CPU nodes
> >   thermal: mediatek: mt8183: fix bank number settings
> 
> Do I understand correctly that we need to fix the bank number before we can add
> the device tree changes. And that the last two patches are enhancements for the
> driver but needed to get a working version?
> 
> Regards,
> Matthias
> 
Hi Matthias,

There is one bank setting of mt8183 config.
If the device tree merged first. I worry that it will crash when the
thermal zone read temperature.
It will access the invalid index of bank.
So please wait the patch "fix bank number settings " merged first.
Thanks!

/* MT8183 thermal sensor data */
static const int mt8183_bank_data[MT8183_NUM_SENSORS] = {
	MT8183_TS1, MT8183_TS2, MT8183_TS3, MT8183_TS4, MT8183_TS5,
MT8183_TSABB
}; 

Best Regards,
Michael


> >   thermal: mediatek: add another get_temp ops for thermal sensors
> >   thermal: mediatek: use spinlock to protect PTPCORESEL
> > 
> >  arch/arm64/boot/dts/mediatek/mt8183.dtsi | 156 +++++++++++++++++++++++
> >  drivers/thermal/mtk_thermal.c            |  88 +++++++++++--
> >  2 files changed, 231 insertions(+), 13 deletions(-)
> >