linux-kernel - Re: [PATCH v2 0/5] pmdomain: mediatek: Add HWVoter and MT8196 Support

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Message-ID: <CAPDyKFq9oxUfdfF-TOGLgi7b4aYay40H-VaEq-s=C3F2eVOBVw@mail.gmail.com>
Date: Wed, 22 Oct 2025 14:57:59 +0200
From: Ulf Hansson <ulf.hansson@...aro.org>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: robh@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org, 
	matthias.bgg@...il.com, nfraprado@...labora.com, fshao@...omium.org, 
	y.oudjana@...tonmail.com, wenst@...omium.org, mandyjh.liu@...iatek.com, 
	mbrugger@...e.com, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
	linux-mediatek@...ts.infradead.org, kernel@...labora.com
Subject: Re: [PATCH v2 0/5] pmdomain: mediatek: Add HWVoter and MT8196 Support

On Thu, 25 Sept 2025 at 16:31, AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com> wrote:
>
> The initial series [1] was refactoring the bus protection regmap retrieval,
> adding modem power sequences and support for the RTFF hardware found in newer
> generation MediaTek SoCs - and adding support for Hardware Voter, HWCCF Infra
> power on, and MT8196 domains.
>
> That series was doing a bit too much in one shot, and then a discussion about
> the whole Hardware Voter started, so I decided to split that in two parts:
> one dedicated only to the refactoring, modem and RTFF [2], and one that only
> introduces MT8196-specific parts.
>
> Since the refactoring series [2] was merged upstream and the Hardware Voter
> discussion came to an agreement on how to proceed (resulting in all of the
> MT8196 clock drivers being also merged upstream), it is now time to send
> the final piece of the Power Domains (MTCMOS) support for the MediaTek
> Kompanio Ultra (MT8196) SoC.
>
> So - this series finally adds support for handling the Hardware Voter type
> of power domains in the MT8196 SoC, for secure infracfg power control, and
> for all of the power domains found in the MT8196 SoC - using all of the
> newly introduced support (HWV, RTFF, etc).
>
> This series was tested on multiple MT8196 Chromebooks now for more than 3
> months, and works just great; the last test was performed on the Collabora
> MediaTek integration kernel tree based on next-20250909.
>
> P.S.: This is a v2 because the initial series ([1] v1) contained patches
>       that I am sending in this series.
>
> [1]: https://lore.kernel.org/all/20250623120154.109429-1-angelogioacchino.delregno@collabora.com/
> [2]: https://lore.kernel.org/all/CAPDyKFoe9=4KgOsPUX6FOE+yPxdUqAxRec5yKY2h6uFOeUvvDQ@mail.gmail.com/
>
> AngeloGioacchino Del Regno (5):
>   dt-bindings: power: Add support for MT8196 power controllers
>   pmdomain: mediatek: Add support for Hardware Voter power domains
>   pmdomain: mediatek: Add support for secure HWCCF infra power on
>   pmdomain: mediatek: Add support for MT8196 SCPSYS power domains
>   pmdomain: mediatek: Add support for MT8196 HFRPSYS power domains
>
>  .../power/mediatek,power-controller.yaml      |   4 +
>  drivers/pmdomain/mediatek/mt8196-pm-domains.h | 625 ++++++++++++++++++
>  drivers/pmdomain/mediatek/mtk-pm-domains.c    | 305 ++++++++-
>  drivers/pmdomain/mediatek/mtk-pm-domains.h    |  49 +-
>  .../dt-bindings/power/mediatek,mt8196-power.h |  58 ++
>  5 files changed, 1012 insertions(+), 29 deletions(-)
>  create mode 100644 drivers/pmdomain/mediatek/mt8196-pm-domains.h
>  create mode 100644 include/dt-bindings/power/mediatek,mt8196-power.h
>
> --
> 2.51.0
>

The series applied for next, thanks!

Kind regards
Uffe