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SubjectRe: [PATCH next 2/2] dt-bindings: gpio: add entry for hisilicon,gpio-ascend910
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On 25/10/2022 23:42, Weilong Chen wrote:
> Add the new compatible for HiSilicon gpio controller driver.
>
> Signed-off-by: Weilong Chen <chenweilong@huawei.com>
> ---
> .../gpio/hisilicon,gpio-ascend910.yaml | 54 +++++++++++++++++++
> MAINTAINERS | 1 +
> 2 files changed, 55 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/gpio/hisilicon,gpio-ascend910.yaml
>
> diff --git a/Documentation/devicetree/bindings/gpio/hisilicon,gpio-ascend910.yaml b/Documentation/devicetree/bindings/gpio/hisilicon,gpio-ascend910.yaml
> new file mode 100644
> index 000000000000..912e4b808cae
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/hisilicon,gpio-ascend910.yaml
> @@ -0,0 +1,54 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/gpio/hisilicon,gpio-ascend910.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: HiSilicon common GPIO controller Device Tree Bindings

Drop "Device Tree Bindings"

> +
> +maintainers:
> + - Jay Fang <f.fangjian@huawei.com>
> +
> +properties:
> + compatible:
> + const: hisilicon,gpio-ascend910
> + description:
> + The HiSilicon common GPIO controller can be used for many different
> + types of SoC such as Huawei Ascend AI series chips.

Put this description in top-level description.

> +
> + reg:
> + description:
> + Address and length of the register set for the device.

Drop description.

> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + gpio-controller: true
> +
> + "#gpio-cells":
> + const: 2
> +
> + ngpios:
> + minimum: 1
> + maximum: 32
> +
> +required:
> + - compatible
> + - gpio-controller

gpio-cells are not required?

> + - reg
> + - interrupts
> + - ngpios
> +
> +unevaluatedProperties: false

Instead:
additionalProperties: false

> +
> +examples:
> + - |
> + gpio@840d0000 {
> + compatible = "hisilicon,gpio-ascend910";
> + reg = <0x840d0000 0x1000>;
> + ngpios = <0x20>;

Convention for counting is to use decimal numbers.

> + gpio-controller;
> + #gpio-cells = <2>;
> + interrupts = <0x0 33 0x4>;

This looks like standard IRQ flags, so use respective defines.


Best regards,
Krzysztof

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