Re: [PATCH v4 1/2] dt-bindings: regulator: Add Richtek RTR5133 Support

[Krzysztof Kozlowski <krzk@kernel.org>]

On 22/07/2025 10:34, jeff_chang@richtek.com wrote:
> From: Jeff Chang <jeff_chang@richtek.com>
> 
> Add bindings for Richtek RT5133 IC Controlled PMIC

Subject - RTR or RT? Google tells me nothing about RTR.

> 
> Signed-off-by: Jeff Chang <jeff_chang@richtek.com>
> ---
> 
> PATCH v4
> 1. Add commit message and also /script/checkpatch --strict to fix warning.
> 2. Using subject prefixes matching dt-binding subsystem.
> 3. Re-order patches. DT patch before driver patch.
> 4. Fix description of yaml.
> 5. Add more description for base regulator.
> 6. Drop regulator-compatible proeprty.
> 7. Add prefix for vendor property richtek,oc-shutdown-all and richtek,pgb-shutdown-all.
> 8. Add more description for shutdown-all property.
> 9. Interrupts-extended -> interrupts.
> 10. pio->gpio for proper defines.
> 11. Drop unused labels. Keep rt5133_ldo1 label for ldo7 and ldo8.
> 
>  .../bindings/regulator/richtek,rt5133.yaml    | 175 ++++++++++++++++++
>  1 file changed, 175 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rt5133.yaml
> 
> diff --git a/Documentation/devicetree/bindings/regulator/richtek,rt5133.yaml b/Documentation/devicetree/bindings/regulator/richtek,rt5133.yaml
> new file mode 100644
> index 000000000000..0da725596a87
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/regulator/richtek,rt5133.yaml
> @@ -0,0 +1,175 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/regulator/richtek,rt5133.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Richtek RT5133 PMIC Regulator
> +
> +maintainers:
> +  - ShihChia Chang <jeff_chang@richtek.com>
> +
> +description:
> +  The RT5133 is an integrated Power Management IC for portable devices, featuring
> +  8 LDOs and 3 GPOs. It allows programmable output voltages, soft-start times,
> +  and protections via I2C. GPO operation depends on LDO1 voltage.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - richtek,rt5133
> +
> +  reg:
> +    maxItems: 1
> +
> +  enable-gpios:
> +    maxItems: 1
> +
> +  wakeup-source: true
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  gpio-controller: true
> +
> +  "#gpio-cells":
> +    const: 2
> +
> +  regulators:
> +    type: object
> +    additionalProperties: false
> +
> +    properties:
> +      base:
> +        type: object
> +        $ref: regulator.yaml#
> +        unevaluatedProperties: false
> +        description:
> +          Properties for base regulator which control force-off base circuit.
> +          Base circuit is the power source for LDO1~LDO6. Disabling it will
> +          reduce IQ for Chip.

I don't understand what this regulator is for. Your example is also
incomplete - missing min/max constraints like voltage.

Explain, what is this output pin? I already asked for explanations. I
have diagram in front of me, so explain precisely instead of sending THE
SAME again - which pin is it?

Also, what is IQ? Except Intelligence Quotient?


> +
> +        properties:
> +          richtek,oc-shutdown-all:
> +            type: boolean
> +            description:
> +              Anyone of LDO is in OC state, shut down all channels to protect CHIP.
> +              Without this property, only shut down the OC LDO channel.

I don't understand this. I also do not understand why this is property
of "base" not the chip itself...

So don't send next version with the same.

> +
> +          richtek,pgb-shutdown-all:
> +            type: boolean
> +            description:
> +              Anyone of LDO is in PGB state, shut down all channels to protect CHIP.

CHIP is an acronym? Or chip?

> +              Without this property, only shut down the PGB LDO channel.
> +
> +        required:
> +          - regulator-name
> +
> +    patternProperties:
> +      "^ldo([1-6])$":
> +        type: object
> +        $ref: regulator.yaml#
> +        unevaluatedProperties: false
> +        description:
> +          Properties for single LDO regulator
> +
> +        required:
> +          - regulator-name
> +
> +      "^ldo([7-8])$":
> +        type: object
> +        $ref: regulator.yaml#
> +        unevaluatedProperties: false
> +        description:
> +          Properties for single LDO regulator
> +
> +        properties:
> +          rt5133-ldo1-supply:

supplies do not have vendor prefixes.

> +            description: |
> +              Only for ldo7 ldo8, pvin7 and pvin8 reference design are RT5133 ldo1.
> +              If not connect to ldo1 vout, this property for pvin7 and pvin8 is necessary.

I don't understand why LDO1 supply is here.

Again, which pin is it?

> +
> +        required:
> +          - regulator-name
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - wakeup-source
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +
> +      rt5133@18 {

Nothing improved.

> +        compatible = "richtek,rt5133";
> +        reg = <0x18>;
> +        wakeup-source;
> +        interrupts-extended = <&gpio 187 0x0>;

Nothing improved

Implement previous comments and respond to each of them to confirm you
understood them.

> 


Best regards,
Krzysztof