linux-kernel - [PATCH 0/2] ARM: stm32: add clock for pwrcfg syscon

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Message-ID: <20231002180854.1603452-1-ben.wolsieffer@hefring.com>
Date:   Mon,  2 Oct 2023 14:08:52 -0400
From:   Ben Wolsieffer <ben.wolsieffer@...ring.com>
To:     linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-clk@...r.kernel.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Ben Wolsieffer <ben.wolsieffer@...ring.com>
Subject: [PATCH 0/2] ARM: stm32: add clock for pwrcfg syscon

The STM32F4/7 pwrcfg syscon was missing its clock, making it impossible
to use after clk_disable_unused(). Simply adding the clock creates a
circular dependency, because the syscon is used by the clock driver.
This series resolves this dependency and then adds the clock.

I tested this on a STM32F746 and verified that syscon writes now
succeed even after clk_disable_unused().

Ben Wolsieffer (2):
  clk: stm32: initialize syscon after clocks are registered
  ARM: dts: stm32: add pwrcfg clock for stm32f4/7

 arch/arm/boot/dts/st/stm32f429.dtsi |  1 +
 arch/arm/boot/dts/st/stm32f746.dtsi |  1 +
 drivers/clk/clk-stm32f4.c           | 12 ++++++------
 3 files changed, 8 insertions(+), 6 deletions(-)

-- 
2.42.0