linux-kernel - [PATCH v3 0/3] regulator: sy7636a: define and init all resources needed

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Message-Id: <20250917-sy7636-rsrc-v3-0-331237d507a2@kernel.org>
Date: Wed, 17 Sep 2025 09:14:28 +0200
From: Andreas Kemnade <akemnade@...nel.org>
To: Lee Jones <lee@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Alistair Francis <alistair@...stair23.me>, 
 Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
 Shawn Guo <shawnguo@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Frank Li <Frank.li@....com>
Cc: devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org, 
 Andreas Kemnade <akemnade@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
 Peng Fan <peng.fan@....com>
Subject: [PATCH v3 0/3] regulator: sy7636a: define and init all resources
 needed

The SY7636A has some pins which can be hardwired or used to have more
more advanced power management available. As several devices containing
this regulator have these pins not hardwired, but instead connected to some
GPIO, enhance the driver to have them defined and initialized.
Also add the ability to power off the chip completely by defining some
input power supply.

Actually implementing better power management is planned to be
implemented as a second step. The regulators in the SY7636A should only
be on for a short time during display refresh, but currently they are
unconditionally forcefully enabled by the hwmon part of this chip.

Signed-off-by: Andreas Kemnade <akemnade@...nel.org>
---
Changes in v3:
- shorten descriptions in binding
- Link to v2: https://lore.kernel.org/r/20250909-sy7636-rsrc-v2-0-cfd9f44fd259@kernel.org

Changes in v2:
- en[-gpios] -> enable[-gpios] in yaml/dts/driver
- fix en vs vcom_en in error handling
- comment delay
- drop applied commit (rebased to regulator/for-linus)
- Link to v1: https://lore.kernel.org/r/20250906-sy7636-rsrc-v1-0-e2886a9763a7@kernel.org

---
Andreas Kemnade (3):
      dt-bindings: mfd: sy7636a: Add missing gpio pins and supply
      regulator: sy7636a: add gpios and input regulator
      ARM: dts: imx: e70k02: add sy7636

 .../devicetree/bindings/mfd/silergy,sy7636a.yaml   | 11 +++++++++
 arch/arm/boot/dts/nxp/imx/e70k02.dtsi              | 25 +++++++++++++++++++-
 .../arm/boot/dts/nxp/imx/imx6sl-tolino-vision5.dts | 24 +++++++++++++++++++
 .../arm/boot/dts/nxp/imx/imx6sll-kobo-librah2o.dts | 24 +++++++++++++++++++
 drivers/regulator/sy7636a-regulator.c              | 27 ++++++++++++++++++++++
 5 files changed, 110 insertions(+), 1 deletion(-)
---
base-commit: c05d0b32eebadc8be6e53196e99c64cf2bed1d99
change-id: 20250906-sy7636-rsrc-c20aa6baa2c4

Best regards,
--  
Andreas Kemnade <akemnade@...nel.org>