linux-kernel - Re: [PATCH v1 1/7] regulator: dt-bindings: add documentation for s2mps16-pmic regulators

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Message-ID: <20250924151159.GA1725090-robh@kernel.org>
Date: Wed, 24 Sep 2025 10:11:59 -0500
From: Rob Herring <robh@...nel.org>
To: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
Cc: Krzysztof Kozlowski <krzk@...nel.org>,
	André Draszik <andre.draszik@...aro.org>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>, Conor Dooley <conor+dt@...nel.org>,
	Lee Jones <lee@...nel.org>, Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Alexandre Belloni <alexandre.belloni@...tlin.com>,
	linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org,
	linux-clk@...r.kernel.org, linux-rtc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 1/7] regulator: dt-bindings: add documentation for
 s2mps16-pmic regulators

On Sun, Sep 14, 2025 at 03:42:21PM +0300, Ivaylo Ivanov wrote:
> The S2MPS16 is a PMIC found in exynos8890 devices, which controls voltage
> regulators - 38 LDOs, of which 11 are used for CP, and 11 BUCKs, of which
> 1 is used for CP. Provide documentation for devicetree definitions,
> regulator naming patterns, etc.
> 
> Signed-off-by: Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
> ---
>  .../bindings/regulator/samsung,s2mps16.yaml   | 50 +++++++++++++++++++
>  1 file changed, 50 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/regulator/samsung,s2mps16.yaml
> 
> diff --git a/Documentation/devicetree/bindings/regulator/samsung,s2mps16.yaml b/Documentation/devicetree/bindings/regulator/samsung,s2mps16.yaml
> new file mode 100644
> index 000000000..ede87d3b9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/regulator/samsung,s2mps16.yaml
> @@ -0,0 +1,50 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/regulator/samsung,s2mps16.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Samsung S2MPS16 Power Management IC regulators
> +
> +maintainers:
> +  - Ivaylo Ivanov <ivo.ivanov.ivanov1@...il.com>
> +
> +description: |
> +  This is a part of device tree bindings for S2M and S5M family of Power
> +  Management IC (PMIC).
> +
> +  The S2MPS16 provides buck and LDO regulators.
> +
> +  See also Documentation/devicetree/bindings/mfd/samsung,s2mps11.yaml for
> +  additional information and example.
> +
> +patternProperties:
> +  # 27 LDOs
> +  "^ldo([1-9]|1[0-3]|2[5-9]|3[0-8])$":
> +    type: object
> +    $ref: regulator.yaml#
> +    unevaluatedProperties: false
> +    description:

You need '>' modifier to preserve paragraphs.

> +      Properties for single LDO regulator.
> +
> +      LDOs 14-24 are used for CP, and they're left unimplemented due to lack
> +      of documentation on them.

What does unimplemented mean? In some driver? If so, that's specific to 
a driver and not relevant to the binding.

> +
> +    required:
> +      - regulator-name
> +
> +  # 10 bucks
> +  "^buck([1-9]|1[0-1])$":
> +    type: object
> +    $ref: regulator.yaml#
> +    unevaluatedProperties: false
> +    description:
> +      Properties for single BUCK regulator.
> +
> +      BUCK 10 is used for CP, and it's left unimplemented due to lack of
> +      documentation on it.
> +
> +    required:
> +      - regulator-name
> +
> +additionalProperties: false
> -- 
> 2.43.0
>