linux-kernel - Re: [PATCH v4 1/3] dt-bindings: clock: Add bindings for Canaan K230 clock controller

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Message-ID: <c68c14422c7d27278f6fc75f285db7c7.sboyd@kernel.org>
Date: Tue, 18 Feb 2025 13:51:03 -0800
From: Stephen Boyd <sboyd@...nel.org>
To: Albert Ou <aou@...s.berkeley.edu>, Conor Dooley <conor+dt@...nel.org>, Conor Dooley <conor@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Michael Turquette <mturquette@...libre.com>, Palmer Dabbelt <palmer@...belt.com>, Paul Walmsley <paul.walmsley@...ive.com>, Rob Herring <robh@...nel.org>, Xukai Wang <kingxukai@...omail.com>
Cc: linux-clk@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org, Samuel Holland <samuel.holland@...ive.com>, Troy Mitchell <TroyMitchell988@...il.com>, Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v4 1/3] dt-bindings: clock: Add bindings for Canaan K230 clock controller

Quoting Xukai Wang (2025-02-17 06:45:16)
> diff --git a/Documentation/devicetree/bindings/clock/canaan,k230-clk.yaml b/Documentation/devicetree/bindings/clock/canaan,k230-clk.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..d7220fa30e4699a68fa5279c04abc63c1905fa4a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/canaan,k230-clk.yaml
> @@ -0,0 +1,43 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/canaan,k230-clk.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Canaan Kendryte K230 Clock
> +
> +maintainers:
> +  - Xukai Wang <kingxukai@...omail.com>

Is this missing a description of the device?

> +
> +properties:
> +  compatible:
> +    const: canaan,k230-clk
> +
> +  reg:
> +    items:
> +      - description: PLL control registers.
> +      - description: Sysclk control registers.
> +
> +  clocks:
> +    maxItems: 1
> +
> +  '#clock-cells':
> +    const: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - '#clock-cells'
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    clock-controller@...02000 {
> +        compatible = "canaan,k230-clk";
> +        reg = <0x91102000 0x1000>,

Is there a reason why the PLL range comes first? What's at 0x91101000?
More clk hardware?

> +              <0x91100000 0x1000>;
> +        clocks = <&osc24m>;
> +        #clock-cells = <1>;
> +    };