linux-kernel - Re: [PATCH v5 02/18] dt-bindings: thermal: add binding document for h6 thermal controller

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Date:   Mon, 12 Aug 2019 10:56:04 +0200
From:   Maxime Ripard <maxime.ripard@...tlin.com>
To:     Yangtao Li <tiny.windzz@...il.com>
Cc:     rui.zhang@...el.com, edubezval@...il.com,
        daniel.lezcano@...aro.org, robh+dt@...nel.org,
        mark.rutland@....com, wens@...e.org, mchehab+samsung@...nel.org,
        davem@...emloft.net, gregkh@...uxfoundation.org,
        Jonathan.Cameron@...wei.com, nicolas.ferre@...rochip.com,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 02/18] dt-bindings: thermal: add binding document for
 h6 thermal controller

On Sat, Aug 10, 2019 at 05:28:13AM +0000, Yangtao Li wrote:
> This patch adds binding document for allwinner h6 thermal controller.
>
> Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
> ---
>  .../bindings/thermal/sun8i-thermal.yaml       | 79 +++++++++++++++++++
>  1 file changed, 79 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/thermal/sun8i-thermal.yaml
>
> diff --git a/Documentation/devicetree/bindings/thermal/sun8i-thermal.yaml b/Documentation/devicetree/bindings/thermal/sun8i-thermal.yaml
> new file mode 100644
> index 000000000000..e0973199ba3c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/thermal/sun8i-thermal.yaml

We've used so far for the schemas the first compatible to introduce
that controller as the filename, we should be consistent here. In that
case that would be allwinner,sun8i-a23-ths.yaml

> @@ -0,0 +1,79 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/thermal/sun8i-thermal.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Allwinner SUN8I Thermal Controller Device Tree Bindings
> +
> +maintainers:
> +  - Yangtao Li <tiny.windzz@...il.com>
> +
> +description: |-
> +  This describes the device tree binding for the Allwinner thermal
> +  controller which measures the on-SoC temperatures.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - allwinner,sun50i-h6-ths
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  resets:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  clock-names:
> +    const: bus
> +
> +  "#thermal-sensor-cells":
> +    const: 1
> +
> +  nvmem-cells:

You need a maxItems here too

> +    description: ths calibrate data

What about something like this:

Calibration data for the thermal sensor

> +
> +  nvmem-cell-names:
> +    const: calib

I'm not sure we need a abbreviation here, calibration would be more
explicit

> +
> +required:
> +  - compatible
> +  - reg
> +  - reset
> +  - clocks
> +  - clock-names
> +  - interrupts
> +  - "#thermal-sensor-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    ths: ths@...0400 {
> +        compatible = "allwinner,sun50i-h6-ths";
> +        reg = <0x05070400 0x100>;
> +        clocks = <&ccu CLK_BUS_THS>;
> +        clock-names = "bus";
> +        resets = <&ccu RST_BUS_THS>;
> +        interrupts = <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;

Those examples won't compile.

Maxime

--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com

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