linux-kernel - Re: [PATCH v3 00/14] Add regulator devfreq support to Panfrost

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Message-ID: <CAJiuCcdRB-ZLepes9BuypR4pErkhiJoOqk6R1meCksuaez-7xQ@mail.gmail.com>
Date:   Thu, 9 Jul 2020 16:19:14 +0200
From:   Clément Péron <peron.clem@...il.com>
To:     Rob Herring <robh@...nel.org>,
        Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        Steven Price <steven.price@....com>,
        Alyssa Rosenzweig <alyssa.rosenzweig@...labora.com>,
        Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
        Stephen Boyd <sboyd@...nel.org>,
        Maxime Ripard <mripard@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>
Cc:     dri-devel <dri-devel@...ts.freedesktop.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 00/14] Add regulator devfreq support to Panfrost

Hi,

On Thu, 9 Jul 2020 at 16:03, Clément Péron <peron.clem@...il.com> wrote:
>
> Hi,
>
> This serie cleans and adds regulator support to Panfrost devfreq.
> This is mostly based on comment for the freshly introduced lima
> devfreq.
>
> We need to add regulator support because on Allwinner the GPU OPP
> table defines both frequencies and voltages.
>
> First patches [01-07] should not change the actual behavior
> and introduce a proper panfrost_devfreq struct.

Just saw that some changes have been made and pushed to 5.8-rc4.

I will push a v4 up to date.

Regards,
Clement


>
> Regards,
> Clément
>
> Changes since v2:
>  - Collect Alyssa Rosenzweig reviewed-by tags
>  - Fix opp_set_regulator before adding opp_table (introduce in v2)
>  - Call err_fini in case opp_add_table failed
>
> Changes since v1:
>  - Collect Steven Price reviewed-by tags
>  - Fix spinlock comment
>  - Drop OPP clock-name path
>  - Drop device_property_test patch
>  - Add rename error labels patch
>
>
> Clément Péron (14):
>   drm/panfrost: avoid static declaration
>   drm/panfrost: clean headers in devfreq
>   drm/panfrost: don't use pfdevfreq.busy_count to know if hw is idle
>   drm/panfrost: introduce panfrost_devfreq struct
>   drm/panfrost: use spinlock instead of atomic
>   drm/panfrost: properly handle error in probe
>   drm/panfrost: rename error labels in device_init
>   drm/panfrost: move devfreq_init()/fini() in device
>   drm/panfrost: dynamically alloc regulators
>   drm/panfrost: add regulators to devfreq
>   arm64: defconfig: Enable devfreq cooling device
>   arm64: dts: allwinner: h6: Add cooling map for GPU
>   [DO NOT MERGE] arm64: dts: allwinner: h6: Add GPU OPP table
>   [DO NOT MERGE] arm64: dts: allwinner: force GPU regulator to be always
>
>  .../dts/allwinner/sun50i-h6-beelink-gs1.dts   |   1 +
>  arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi  | 102 ++++++++++
>  arch/arm64/configs/defconfig                  |   1 +
>  drivers/gpu/drm/panfrost/panfrost_devfreq.c   | 175 ++++++++++++------
>  drivers/gpu/drm/panfrost/panfrost_devfreq.h   |  30 ++-
>  drivers/gpu/drm/panfrost/panfrost_device.c    |  61 +++---
>  drivers/gpu/drm/panfrost/panfrost_device.h    |  14 +-
>  drivers/gpu/drm/panfrost/panfrost_drv.c       |  15 +-
>  drivers/gpu/drm/panfrost/panfrost_job.c       |  10 +-
>  9 files changed, 296 insertions(+), 113 deletions(-)
>
> --
> 2.25.1
>