linux-kernel - Re: [PATCH 4/9] regulator: dt-bindings: mediatek: Add MT6366 PMIC

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Date:   Mon, 7 Aug 2023 08:36:58 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Chen-Yu Tsai <wenst@...omium.org>
Cc:     Lee Jones <lee@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Mark Brown <broonie@...nel.org>,
        Zhiyong Tao <zhiyong.tao@...iatek.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH 4/9] regulator: dt-bindings: mediatek: Add MT6366 PMIC

On 07/08/2023 08:30, Chen-Yu Tsai wrote:
> On Mon, Aug 7, 2023 at 2:23 PM Krzysztof Kozlowski
> <krzysztof.kozlowski@...aro.org> wrote:
>>
>> On 03/08/2023 09:42, Chen-Yu Tsai wrote:
>>> From: Zhiyong Tao <zhiyong.tao@...iatek.com>
>>>
>>> The MediaTek MT6366 PMIC is similar to the MT6358 PMIC. It is designed
>>> to be paired with the MediaTek MT8186 SoC. It has 9 buck regulators and
>>> 29 LDO regulators, not counting ones that feed internally and basically
>>> have no controls. The regulators are named after their intended usage
>>> for the SoC and system design, thus not named generically as ldoX or
>>> dcdcX, but as vcn33 or vgpu.
>>>
>>> Add a binding document describing all the regulators and their supplies.
>>>
>>> Signed-off-by: Zhiyong Tao <zhiyong.tao@...iatek.com>
>>> [wens@...omium.org: major rework and added commit message]
>>> Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
>>> ---
>>> Changes since Zhiyong's last version (v4) [1]:
>>> - simplified regulator names
>>> - added descriptions to regulators
>>> - removed bogus regulators (*_sshub)
>>> - merged vcn33-wifi and vcn33-bt as vcn33
>>> - added missing regulators (vm18, vmddr, vsram-core)
>>> - cut down examples to a handful of cases and made them complete
>>> - expanded commit message a lot
>>>
>>> [1] https://lore.kernel.org/linux-arm-kernel/20220823123745.14061-1-zhiyong.tao@mediatek.com/
>>>
>>>  .../regulator/mediatek,mt6366-regulator.yaml  | 154 ++++++++++++++++++
>>>  1 file changed, 154 insertions(+)
>>>  create mode 100644 Documentation/devicetree/bindings/regulator/mediatek,mt6366-regulator.yaml
>>>
>>> diff --git a/Documentation/devicetree/bindings/regulator/mediatek,mt6366-regulator.yaml b/Documentation/devicetree/bindings/regulator/mediatek,mt6366-regulator.yaml
>>> new file mode 100644
>>> index 000000000000..715c6ffcb3ab
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/regulator/mediatek,mt6366-regulator.yaml
>>> @@ -0,0 +1,154 @@
>>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>>> +%YAML 1.2
>>> +---
>>> +$id: http://devicetree.org/schemas/regulator/mediatek,mt6366-regulator.yaml#
>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>> +
>>> +title: MT6366 Regulator from MediaTek Integrated
>>> +
>>> +maintainers:
>>> +  - Zhiyong Tao <zhiyong.tao@...iatek.com>
>>> +
>>> +description: |
>>> +  Regulator part of the MT6366 PMIC. This node should be under the PMIC's
>>> +  device node.
>>> +
>>> +properties:
>>> +  compatible:
>>> +    const: mediatek,mt6366-regulator
>>> +
>>> +  vsys_ldo1-supply:
>>
>> Don't use underscores in property names. Only hyphens, if needed.
> 
> I assume that applies even if the actual name in the datasheet has
> underscores?

Yes. We follow this already in other bindings. Hardware people can use
any names or characters in the datasheet, e.g. "*".


Best regards,
Krzysztof