linux-kernel - Re: [PATCH v3 0/5] RK3588 and Rock 5B dts additions: thermal, OPP and fan

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Date: Sun, 21 Apr 2024 18:07:34 +0200
From: Dragan Simic <dsimic@...jaro.org>
To: Diederik de Haas <didi.debian@...ow.org>
Cc: Alexey Charkov <alchark@...il.com>, Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley
 <conor+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>,
 linux-rockchip@...ts.infradead.org, Daniel Lezcano
 <daniel.lezcano@...aro.org>, Viresh Kumar <viresh.kumar@...aro.org>, Chen-Yu
 Tsai <wens@...nel.org>, devicetree@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/5] RK3588 and Rock 5B dts additions: thermal, OPP and
 fan

Hello Diederik,

On 2024-04-20 19:53, Diederik de Haas wrote:
> On Wednesday, 10 April 2024 11:28:09 CEST Dragan Simic wrote:
>> > Can you rebase this patch set on Heiko's for-next branch [1]?
>> > And then also fix the ordering of the nodes and the elements within
>> > those nodes so that they match the current conventions?
>> 
>> Ah, thanks, this is a good reminder about the proposal for the plan
>> for moving forward, which I promised to send a while ago. :)
>> 
>>> [1] 
>>> https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git/log/?h=for-next
> 
> I build a (Debian) kernel based off 6.9-rc4 + a whole bunch of patches,
> including this patch series. I got someone on #debian-arm to try it out 
> on a
> Rock 5B and the dmesg output showed a number of items wrt thermal and 
> OPP.
> 
> Some items that I filtered out from that dmesg output:
> 
> [    3.211716] hwmon hwmon0: temp1_input not attached to any thermal 
> zone
> [    3.908339] panthor fb000000.gpu: EM: OPP:900000 is inefficient
> [   10.473061] cpu cpu0: EM: OPP:600000 is inefficient
> [   10.473233] energy_model: Accessing cpu4 policy failed
> [   10.585236] rockchip-thermal fec00000.tsadc: Missing rockchip,grf 
> property
> 
> Attached is the full list of items I collected from that dmesg output 
> which
> seem worth investigating.
> 
> Maybe useful to investigate when moving forward?

This is a nice report, thanks!

I'm not sure what's going on with the mmc2 issues.  Regarding the 
hym8563,
hwmon, energy_model and rockchip-spi issues, I'll have a look into them
and come back with an update.

Regarding the multiple "OPP:<frequency> is inefficient" warnings, it's
already on my TO-DO list to perform a detailed (and repeatable) testing.
My suspicion is that declaring the OPPs as inefficient actually isn't
warranted, but we'll see what will be the test results.