linux-kernel - Re: [PATCH v2 0/8] arm64: dts: allwinner: h5: Enable CPU DVFS (cpufreq)

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Date:   Mon, 20 Jul 2020 16:11:39 +0200
From:   Maxime Ripard <maxime@...no.tech>
To:     Chen-Yu Tsai <wens@...nel.org>
Cc:     Chen-Yu Tsai <wens@...e.org>, Rob Herring <robh+dt@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 0/8] arm64: dts: allwinner: h5: Enable CPU DVFS
 (cpufreq)

On Sat, Jul 18, 2020 at 12:00:45AM +0800, Chen-Yu Tsai wrote:
> From: Chen-Yu Tsai <wens@...e.org>
> 
> Hi everyone,
> 
> This is v2 of my Allwinner H5 SoC cpufreq support series from way
> back [1]. The series enables DVFS for the CPU cores (aka cpufreq)
> on the Allwinner H5 SoC. The OPP table was taken from Armbian, with
> minor tweaks to the maximum voltage to account for slightly increased
> voltage on some of the boards.
> 
> In this version, the OPP table and tie in to the CPU cores has been
> split out into a separate file, like what was done for the H6. The
> patches adding CPU regulator supplies for all the boards that I don't
> have have been removed. The series now only enables cpufreq for Libre
> Computer ALL-H3-CC and ALL-H5-CC, and Bananapi M2+ v1.2.
> 
> For the original Bananapi M2+, if I add the fixed regulator with the
> enable pin, it ends up causing some sort of glitch or lock up on the
> v1.2, which includes the original dts file. Since I haven't been able
> to sort it out yet, I've left it out for now.
> 
> Patch 1 assigns the CPU regulator supply to all the CPU cores on the
> Libre Computer ALL-H3-CC.
> 
> Patch 2 assigns the CPU regulator supply to all the CPU cores on the
> Bananapi M2+ v1.2.
> 
> Patch 3 fixes the voltages specified for the GPIO-controlled regulator
> on the Bananapi M2+ v1.2. The voltages are slightly higher than what
> was originally written.
> 
> Patch 4 ties the CPU clock to the CPU cores.
> 
> Patch 5 adds trip points and cooling maps to the CPU thermal zones.
> 
> Patch 6 adds the OPP table, based on the one from Armbian.
> 
> Patch 7 hooks up the CPU regulator supply for the Libre Computer
> ALL-H3-CC H5 variant, and by extension, the ALL-H5-CC.
> 
> Patch 8 hooks up the CPU regulator supply for the Bananapi M2+ v1.2.

Applied all of them (and fixed the OPP node names in the patch 6)

Maxime

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