linux-kernel - Re: [PATCH v1 1/2] dt-bindings: mfd: Add binding for MediaTek MT6363 series SPMI PMIC

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Message-ID: <40f07604-f4eb-4a7d-88b4-ed29e9242d6e@collabora.com>
Date: Wed, 25 Jun 2025 10:30:44 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Rob Herring <robh@...nel.org>
Cc: lee@...nel.org, krzk+dt@...nel.org, conor+dt@...nel.org,
 matthias.bgg@...il.com, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-mediatek@...ts.infradead.org, kernel@...labora.com
Subject: Re: [PATCH v1 1/2] dt-bindings: mfd: Add binding for MediaTek MT6363
 series SPMI PMIC

Il 25/06/25 02:51, Rob Herring ha scritto:
> On Mon, Jun 23, 2025 at 02:00:37PM +0200, AngeloGioacchino Del Regno wrote:
>> Add a binding for the MediaTek MT6363/6373 (and similar) multi
>> function PMICs connected over SPMI.
>>
>> These PMICs are found on board designs using newer MediaTek SoCs,
>> such as the Dimensity 9400 Smartphone chip, or the Chromebook
>> MT8196 chip.
>>
>> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
>> ---
>>   .../bindings/mfd/mediatek,mt6363.yaml         | 98 +++++++++++++++++++
>>   1 file changed, 98 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/mfd/mediatek,mt6363.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/mfd/mediatek,mt6363.yaml b/Documentation/devicetree/bindings/mfd/mediatek,mt6363.yaml
>> new file mode 100644
>> index 000000000000..2ce57e659d12
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mfd/mediatek,mt6363.yaml
>> @@ -0,0 +1,98 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/mfd/mediatek,mt6363.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: MediaTek MT6363 series SPMI PMICs multi-function device
>> +
>> +maintainers:
>> +  - AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
>> +
>> +description: |
>> +  Some MediaTek Power Management ICs (PMICs) found in board designs with
>> +  the Helio, Dimensity and/or Kompanio series of SoCs are interfaced to
>> +  the chip via the System Power Management Interface (SPMI) bus.
>> +
>> +  These PMICs are multi-function devices with various sub modules.
>> +  For example, those may include one, or more of the following:
>> +  - Auxiliary ADC Controller
>> +  - Clock Controller
>> +  - eFuses
>> +  - GPIO Controller
>> +  - Interrupt Controller
>> +  - Keys
>> +  - LEDs Controller
>> +  - Regulators
>> +  - RTC
>> +
>> +properties:
>> +  compatible:
>> +    items:
>> +      - enum:
>> +          - mediatek,mt6363
>> +          - mediatek,mt6373
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  '#address-cells':
>> +    const: 0
>> +
>> +  '#size-cells':
>> +    const: 0
>> +
>> +  interrupts:
>> +    maxItems: 1
>> +
>> +  interrupt-controller: true
>> +
>> +  "#interrupt-cells":
>> +    const: 3
>> +
>> +  adc:
>> +    type: object
>> +    $ref: /schemas/iio/adc/mediatek,mt6359-auxadc.yaml#
>> +    unevaluatedProperties: false
>> +
>> +  regulators:
>> +    type: object
>> +    oneOf:
>> +      - $ref: /schemas/regulator/mediatek,mt6363-regulator.yaml#
>> +      - $ref: /schemas/regulator/mediatek,mt6373-regulator.yaml#
> 
> This causes the schemas to be applied 4 times (2 each). Better if you
> do:
> 
> properties:
>    compatible:
>      contains:
>        enum: [ the compatibles in those schemas ]
> 
> 

Noted, thanks!

>> +    additionalProperties: true
>> +
>> +  keys:
>> +    type: object
>> +    $ref: /schemas/input/mediatek,pmic-keys.yaml
>> +    unevaluatedProperties: false
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - '#address-cells'
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    #include <dt-bindings/interrupt-controller/irq.h>
>> +    #include <dt-bindings/spmi/spmi.h>
>> +
>> +    spmi {
>> +      #address-cells = <2>;
>> +      #size-cells = <0>;
>> +
>> +      pmic@4 {
>> +        compatible = "mediatek,mt6363";
>> +        reg = <0x4 SPMI_USID>;
>> +        interrupts = <4 64 IRQ_TYPE_LEVEL_HIGH>;
>> +        interrupt-controller;
>> +        #address-cells = <0>;
>> +        #interrupt-cells = <3>;
>> +
>> +        regulators {
>> +            compatible = "mediatek,mt6363-regulator";
>> +        };
> 
> Make the example complete. with adc and keys nodes.
> 

You mean just adding a

adc {
   compatible = xyz;
};

keys {
   compatible = xyz;
};

right?

I will add the full example in the next version :-)

Thank you!
Angelo

>> +      };
>> +    };
>> -- 
>> 2.49.0
>>