linux-kernel - Re: [PATCH v6 1/9] dt-bindings: regulator: Document MediaTek MT6316 PMIC Regulators

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Message-ID: <20251001154537.GA1833526-robh@kernel.org>
Date: Wed, 1 Oct 2025 10:45:37 -0500
From: Rob Herring <robh@...nel.org>
To: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Cc: linux-mediatek@...ts.infradead.org, lee@...nel.org, krzk+dt@...nel.org,
	conor+dt@...nel.org, matthias.bgg@...il.com, lgirdwood@...il.com,
	broonie@...nel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	kernel@...labora.com, wenst@...omium.org,
	igor.belwon@...tallysanemainliners.org
Subject: Re: [PATCH v6 1/9] dt-bindings: regulator: Document MediaTek MT6316
 PMIC Regulators

On Wed, Oct 01, 2025 at 01:13:08PM +0200, AngeloGioacchino Del Regno wrote:
> Add bindings for the regulators found in the MediaTek MT6316 PMIC,
> usually found in board designs using the MT6991 Dimensity 9400 and
> on MT8196 Kompanio SoC for Chromebooks.
> 
> This chip is fully controlled by SPMI and has multiple variants
> providing different phase configurations.
> 
> Reviewed-by: Chen-Yu Tsai <wenst@...omium.org>
> Link: https://lore.kernel.org/r/20250715140224.206329-2-angelogioacchino.delregno@collabora.com

Why do we want a link to v5 here in the git history forever? You've seen 
Linus' recent comments on Link usage?

> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> ---
>  .../regulator/mediatek,mt6316b-regulator.yaml | 46 +++++++++++++++++++
>  .../regulator/mediatek,mt6316c-regulator.yaml | 46 +++++++++++++++++++
>  .../regulator/mediatek,mt6316d-regulator.yaml | 41 +++++++++++++++++
>  3 files changed, 133 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/regulator/mediatek,mt6316b-regulator.yaml
>  create mode 100644 Documentation/devicetree/bindings/regulator/mediatek,mt6316c-regulator.yaml
>  create mode 100644 Documentation/devicetree/bindings/regulator/mediatek,mt6316d-regulator.yaml
> 
> diff --git a/Documentation/devicetree/bindings/regulator/mediatek,mt6316b-regulator.yaml b/Documentation/devicetree/bindings/regulator/mediatek,mt6316b-regulator.yaml
> new file mode 100644
> index 000000000000..e7a6b70cdab2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/regulator/mediatek,mt6316b-regulator.yaml
> @@ -0,0 +1,46 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/regulator/mediatek,mt6316b-regulator.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek MT6316 BP/VP SPMI PMIC Regulators
> +
> +maintainers:
> +  - AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> +
> +description:
> +  The MediaTek MT6316BP/VP PMICs are fully controlled by SPMI interface, both
> +  feature four step-down DC/DC (buck) converters, and provides 2+2 Phases,
> +  joining Buck 1+2 for the first phase, and Buck 3+4 for the second phase.
> +
> +properties:
> +  compatible:
> +    const: mediatek,mt6316b-regulator
> +
> +  vbuck12:
> +    type: object
> +    $ref: regulator.yaml#
> +    unevaluatedProperties: false
> +
> +  vbuck34:
> +    type: object
> +    $ref: regulator.yaml#
> +    unevaluatedProperties: false
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    pmic {
> +      regulators {
> +        compatible = "mediatek,mt6316b-regulator";
> +
> +        vbuck12 {
> +          regulator-min-microvolt = <450000>;
> +          regulator-max-microvolt = <965000>;
> +          regulator-always-on;
> +        };
> +      };
> +    };

One complete example for the pmic please rather than incomplete child 
node examples.

Rob