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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250925143122.39796-1-angelogioacchino.delregno@collabora.com>
Date: Thu, 25 Sep 2025 16:31:11 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: ulf.hansson@...aro.org
Cc: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	matthias.bgg@...il.com,
	angelogioacchino.delregno@...labora.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: [PATCH v2 0/5] pmdomain: mediatek: Add HWVoter and MT8196 Support

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