linux-kernel - [PATCH v4 0/2] ARM: st: add new compatible for PWR regulators on STM32MP13

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Message-ID: <20240523180435.583257-1-patrick.delaunay@foss.st.com>
Date: Thu, 23 May 2024 20:04:32 +0200
From: Patrick Delaunay <patrick.delaunay@...s.st.com>
To: Alexandre TORGUE <alexandre.torgue@...s.st.com>,
        Liam Girdwood
	<lgirdwood@...il.com>, Mark Brown <broonie@...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>,
        Pascal
 Paillet <p.paillet@...s.st.com>
CC: Marek Vasut <marex@...x.de>,
        Patrick Delaunay
	<patrick.delaunay@...s.st.com>,
        <devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>
Subject: [PATCH v4 0/2] ARM: st: add new compatible for PWR regulators on STM32MP13


This patchset adds the new PWR regulators compatible for STM32MP13:
"st,stm32mp13-pwr-reg".

As this node is just introduced by [1] and it is is not used by any
board in Linux,  it is the good time to introduced this compatible
and update the STM32MP13 SoC dtsi without ABI break.

A new compatible is needed as the content of the PWR_CR3 register,
used by this driver change with new bits on STM32MP13 for SD IO domain:
- bit 23: VDDSD2VALID
- bit 22: VDDSD1VALID
- bit 16: VDDSD2RDY
- bit 15: VDDSD2EN
- bit 14: VDDSD1RDY
- bit 13: VDDSD1EN

I will push a update on STM32MP13 SoC dtsi if this new compatible
is accepted to preserve the bisectability.

[1] commit f798f7079233 ("ARM: dts: stm32: add PWR regulators support on stm32mp131")
    https://lore.kernel.org/linux-arm-kernel/b89d0531-067f-4356-91b0-ed7434cee3d7@foss.st.com/


Changes in v4:
- use fallback as proposed by Marek on V3 for STM32MP13:
  compatible = "st,stm32mp13-pwr-reg", "st,stm32mp1,pwr-reg"

Changes in v3:
- Replace oneOf/const by enum; solve the V2 issues for dt_binding_check

Changes in v2:
- Add new compatible for STM32MP13 and change title after Rob remarks
  V1: "ARM: st: use a correct pwr compatible for stm32mp15"

Patrick Delaunay (2):
  dt-bindings: regulator: st,stm32mp1-pwr-reg: add compatible for
    STM32MP13
  regulator: stm32-pwr: add support of STM32MP13

 .../devicetree/bindings/regulator/st,stm32mp1-pwr-reg.yaml | 7 ++++++-
 drivers/regulator/stm32-pwr.c                              | 1 +
 2 files changed, 7 insertions(+), 1 deletion(-)

-- 
2.25.1