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Date: Tue, 24 Oct 2023 16:00:55 -0500
From: Rob Herring <robh@...nel.org>
To: Geert Uytterhoeven <geert+renesas@...der.be>
Cc: Lee Jones <lee@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Guennadi Liakhovetski <guennadi.liakhovetski@...ux.intel.com>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>, devicetree@...r.kernel.org,
linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC] dt-bindings: mfd: ams,as3711: Convert to json-schema
On Mon, Oct 23, 2023 at 08:38:07PM +0200, Geert Uytterhoeven wrote:
> Convert the Austria MicroSystems AS3711 Quad Buck High Current PMIC with
> Charger Device Tree binding documentation to json-schema.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
> ---
> RFC, as I couldn't get the multiple dependencies right (see FIXMEs):
> 1. How to incorporate "su2-dev: [ su2-max-uA ]" and
> "su2-feedback-curr-auto: [ su2-dev ]"?
> 2. su2-dev requiring one of su2-fbprot-* does not seem to work?
>
> Anyone with better *Of foo? Thanks!
> ---
> .../devicetree/bindings/mfd/ams,as3711.yaml | 223 ++++++++++++++++++
> .../devicetree/bindings/mfd/as3711.txt | 73 ------
> 2 files changed, 223 insertions(+), 73 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/mfd/ams,as3711.yaml
> delete mode 100644 Documentation/devicetree/bindings/mfd/as3711.txt
>
> diff --git a/Documentation/devicetree/bindings/mfd/ams,as3711.yaml b/Documentation/devicetree/bindings/mfd/ams,as3711.yaml
> new file mode 100644
> index 0000000000000000..d9f08e017194c4f8
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/ams,as3711.yaml
> @@ -0,0 +1,223 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mfd/ams,as3711.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Austria MicroSystems AS3711 Quad Buck High Current PMIC with Charger
> +
> +maintainers:
> + - Guennadi Liakhovetski <guennadi.liakhovetski@...ux.intel.com>
> +
> +description:
> + AS3711 is an I2C PMIC from Austria MicroSystems with multiple DCDC and LDO
> + power supplies, a battery charger and an RTC. So far only bindings for the
> + two stepup DCDC converters are defined.
step-up?
> +
> +properties:
> + compatible:
> + const: ams,as3711
> +
> + reg:
> + maxItems: 1
> +
> + backlight:
> + description:
> + Step-up converter configuration, to be used as a backlight source
> + type: object
> + properties:
> + compatible:
> + const: ams,as3711-bl
> +
> + su1-dev:
> + description: Framebuffer phandle for the first step-up converter
> + $ref: /schemas/types.yaml#/definitions/phandle
> +
> + su1-max-uA:
> + description: Maximum current for the first step-up converter
> + $ref: /schemas/types.yaml#/definitions/uint32
> +
> + su2-dev:
> + description: Framebuffer phandle for the second step-up converter
> + $ref: /schemas/types.yaml#/definitions/phandle
> +
> + su2-max-uA:
> + description: Maximum current for the second step-up converter
> + $ref: /schemas/types.yaml#/definitions/uint32
> +
> + su2-feedback-voltage:
> + description: Second step-up converter uses voltage feedback
> + type: boolean
> +
> + su2-feedback-curr1:
> + description:
> + Second step-up converter uses CURR1 input for current feedback
> + type: boolean
> +
> + su2-feedback-curr2:
> + description:
> + Second step-up converter uses CURR2 input for current feedback
> + type: boolean
> +
> + su2-feedback-curr3:
> + description:
> + Second step-up converter uses CURR3 input for current feedback
> + type: boolean
> +
> + su2-feedback-curr-auto:
> + description:
> + Second step-up converter uses automatic current feedback selection
> + type: boolean
> +
> + su2-fbprot-lx-sd4:
> + description:
> + Second step-up converter uses LX_SD4 for over-voltage protection
> + type: boolean
> +
> + su2-fbprot-gpio2:
> + description:
> + Second step-up converter uses GPIO2 for over-voltage protection
> + type: boolean
> +
> + su2-fbprot-gpio3:
> + description:
> + Second step-up converter uses GPIO3 for over-voltage protection
> + type: boolean
> +
> + su2-fbprot-gpio4:
> + description:
> + Second step-up converter uses GPIO4 for over-voltage protection
> + type: boolean
> +
> + su2-auto-curr1:
> + description:
> + Second step-up converter uses CURR1 input for automatic current
> + feedback
> + type: boolean
> +
> + su2-auto-curr2:
> + description:
> + Second step-up converter uses CURR2 input for automatic current
> + feedback
> + type: boolean
> +
> + su2-auto-curr3:
> + description:
> + Second step-up converter uses CURR3 input for automatic current
> + feedback
> + type: boolean
> +
> + required:
> + - compatible
> +
> + dependencies:
> + # To use the SU1 converter as a backlight source the following two
> + # properties must be provided:
> + su1-dev: [ su1-max-uA ]
> + su1-max-uA: [ su1-dev ]
> +
> + # To use the SU2 converter as a backlight source the following two
> + # properties must be provided:
> + # FIXME How to incorporate "su2-dev: [ su2-max-uA ]"?
> + # FIXME su2-dev requiring one of su2-fbprot-* does not seem to work?
> + su2-dev:
> + allOf:
> + - oneOf:
> + - required:
> + - su2-feedback-voltage
> + - required:
> + - su2-feedback-curr1
> + - required:
> + - su2-feedback-curr2
> + - required:
> + - su2-feedback-curr3
> + - required:
> + - su2-feedback-curr-auto
> + - oneof:
> + - required:
> + - su2-fbprot-lx-sd4
> + - required:
> + - su2-fbprot-gpio2
> + - required:
> + - su2-fbprot-gpio3
> + - required:
> + - su2-fbprot-gpio4
> +
> + su2-max-uA: [ su2-dev ]
> + su2-feedback-voltage: [ su2-dev ]
> + su2-feedback-curr1: [ su2-dev ]
> + su2-feedback-curr2: [ su2-dev ]
> + su2-feedback-curr3: [ su2-dev ]
> + # FIXME How to incorporate "su2-feedback-curr-auto: [ su2-dev ]"?
> + su2-feedback-curr-auto:
> + anyOf:
> + - required:
> + - su2-auto-curr1
> + - required:
> + - su2-auto-curr2
> + - required:
> + - su2-auto-curr3
> + su2-fbprot-lx-sd4: [ su2-dev ]
> + su2-fbprot-gpio2: [ su2-dev ]
> + su2-fbprot-gpio3: [ su2-dev ]
> + su2-fbprot-gpio4: [ su2-dev ]
> + su2-auto-curr1: [ su2-feedback-curr-auto ]
> + su2-auto-curr2: [ su2-feedback-curr-auto ]
> + su2-auto-curr3: [ su2-feedback-curr-auto ]
> +
> + additionalProperties: false
Move this above 'properties'. Easier to read in the indented cases.
> +
> + regulators:
> + description: Other DCDC and LDO supplies
> + type: object
> + patternProperties:
> + "^(sd[1-4]|ldo[1-8])$":
> + type: object
> + $ref: /schemas/regulator/regulator.yaml#
> + unevaluatedProperties: false
> +
> + unevaluatedProperties: false
Same here, though this one is short.
> +
> +required:
> + - compatible
> + - reg
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + i2c {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + as3711@40 {
pmic@40
> + compatible = "ams,as3711";
> + reg = <0x40>;
> +
> + regulators {
> + sd4 {
> + regulator-name = "1.215V";
> + regulator-min-microvolt = <1215000>;
> + regulator-max-microvolt = <1235000>;
> + };
> + ldo2 {
> + regulator-name = "2.8V CPU";
> + regulator-min-microvolt = <2800000>;
> + regulator-max-microvolt = <2800000>;
> + regulator-always-on;
> + regulator-boot-on;
> + };
> + };
> +
> + backlight {
> + compatible = "ams,as3711-bl";
> + su2-dev = <&lcdc>;
> + su2-max-uA = <36000>;
> + su2-feedback-curr-auto;
> + su2-fbprot-gpio4;
> + su2-auto-curr1;
> + su2-auto-curr2;
> + su2-auto-curr3;
> + };
> + };
> + };
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