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SubjectRe: [RFC PATCH net-next 04/12] dt-bindings: reset: Add lan966x switch reset bindings
On Mon, Sep 20, 2021 at 11:52:10AM +0200, Horatiu Vultur wrote:
> Document the lan966x switch reset device driver bindings
>
> Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
> ---
> .../bindings/reset/lan966x,rst.yaml | 58 +++++++++++++++++++
> 1 file changed, 58 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/reset/lan966x,rst.yaml
>
> diff --git a/Documentation/devicetree/bindings/reset/lan966x,rst.yaml b/Documentation/devicetree/bindings/reset/lan966x,rst.yaml
> new file mode 100644
> index 000000000000..97d6334e4e0a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/reset/lan966x,rst.yaml
> @@ -0,0 +1,58 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/reset/lan966x,rst.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Microchip lan966x Switch Reset Controller
> +
> +maintainers:
> + - Horatiu Vultur <horatiu.vultur@microchip.com>
> + - UNGLinuxDriver@microchip.com
> +
> +description: |
> + The Microchip lan966x Switch provides reset control and implements the
> + following
> + functions
> + - One Time Switch Core Reset (Soft Reset)

This looks like just some grouping of separate reset controllers. If
there are 3 h/w blocks providing resets, then the DT should have 3 reset
providers.

> +
> +properties:
> + $nodename:
> + pattern: "^reset-controller$"

Don't use 'pattern' for fixed strings.

> +
> + compatible:
> + const: microchip,lan966x-switch-reset
> +
> + "#reset-cells":
> + const: 1
> +
> + cpu-syscon:
> + $ref: "/schemas/types.yaml#/definitions/phandle"
> + description: syscon used to access CPU reset
> +
> + switch-syscon:
> + $ref: "/schemas/types.yaml#/definitions/phandle"
> + description: syscon used to access SWITCH reset
> +
> + chip-syscon:
> + $ref: "/schemas/types.yaml#/definitions/phandle"
> + description: syscon used to access CHIP reset
> +
> +required:
> + - compatible
> + - "#reset-cells"
> + - cpu-syscon
> + - switch-syscon
> + - chip-syscon
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + reset: reset-controller {
> + compatible = "microchip,lan966x-switch-reset";
> + #reset-cells = <1>;
> + cpu-syscon = <&cpu_ctrl>;
> + switch-syscon = <&switch_ctrl>;
> + chip-syscon = <&chip_ctrl>;
> + };
> --
> 2.31.1
>
>

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