linux-kernel - [PATCH v7 0/3] Register the STM32MP25 RCC driver as an access controller.

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Message-Id: <20250922-b4-rcc-upstream-v7-0-2dfc4e018f40@gmail.com>
Date: Mon, 22 Sep 2025 10:12:17 +0200
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 v7 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.

This 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/stm32mp251.dtsi             |  1 +
 drivers/clk/stm32/clk-stm32mp25.c                  | 40 +++++++++++++++++++++-
 3 files changed, 47 insertions(+), 1 deletion(-)
---
base-commit: 07e27ad16399afcd693be20211b0dfae63e0615f
change-id: 20250916-b4-rcc-upstream-8a8ea3af6a0d
prerequisite-change-id: 20250916-b4-firewall-upstream-dfe8588a21f8:v7
prerequisite-patch-id: 1ead960f405c7a2dcc9111acd0bb4c95ed33954f

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