linux-kernel - [PATCH v9 0/3] Register the STM32MP25 RCC driver as an access controller.

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Message-Id: <20260210-b4-rcc-upstream-v9-0-17ca1db7613f@gmail.com>
Date: Tue, 10 Feb 2026 20:32:51 +0100
From: Clément Le Goffic <legoffic.clement@...il.com>
To: Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Gabriel Fernandez <gabriel.fernandez@...s.st.com>
Cc: linux-clk@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-stm32@...md-mailman.stormreply.com, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Clément Le Goffic <legoffic.clement@...il.com>, 
 Clément Le Goffic <clement.legoffic@...s.st.com>
Subject: [PATCH v9 0/3] Register the STM32MP25 RCC driver as an access
 controller.

The STM32MP25 RCC peripheral as an access controller is allowed to know
whether the clocks are secured or not.
The STM32MP25 RCC peripheral knows about the clock secure configuration
of all non RIF-aware peripheral.
In parallel all the RIF-aware peripheral configuration information
are known by the RIFSC peripheral which is already an access
controller.

Changes in v9:
- Rebase on v6.19.0
- Add Gabriel Fernandez's Reviewed-by
- Link to v8: https://lore.kernel.org/r/20250924-b4-rcc-upstream-v8-0-b32d46f71a38@gmail.com

Changes in v8:
- Use uppercase for peripheral name in commit message
- Add the '#access-controller-cells' property to the RCC in
  stm32mp231.dtsi
- Link to v7: https://lore.kernel.org/r/20250922-b4-rcc-upstream-v7-0-2dfc4e018f40@gmail.com

The v7 is a subset of the v6 and other prior versions, split to simplify
the review and merging process.

Changes in v7:
- None
- Link to v6: https://lore.kernel.org/all/20250909-b4-ddrperfm-upstream-v6-2-ce082cc801b5@gmail.com/

Signed-off-by: Clément Le Goffic <legoffic.clement@...il.com>
---
Clément Le Goffic (3):
      dt-bindings: stm32: stm32mp25: add `#access-controller-cells` property
      clk: stm32mp25: add firewall grant_access ops
      arm64: dts: st: set RCC as an access-controller

 .../bindings/clock/st,stm32mp25-rcc.yaml           |  7 ++++
 arch/arm64/boot/dts/st/stm32mp231.dtsi             |  1 +
 arch/arm64/boot/dts/st/stm32mp251.dtsi             |  1 +
 drivers/clk/stm32/clk-stm32mp25.c                  | 40 +++++++++++++++++++++-
 4 files changed, 48 insertions(+), 1 deletion(-)
---
base-commit: 05f7e89ab9731565d8a62e3b5d1ec206485eeb0b
change-id: 20250916-b4-rcc-upstream-8a8ea3af6a0d
prerequisite-change-id: 20250916-b4-firewall-upstream-dfe8588a21f8:v8
prerequisite-patch-id: e4a708d9c6df5725c9598fbd2169636e4e7dc46b

Best regards,
--  
Clément Le Goffic <legoffic.clement@...il.com>