linux-kernel - Re: [PATCH v2 2/3] dt-bindings: clock: spacemit: Add clock controllers of Spacemit K1 SoC

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Message-ID: <zsayhliz4a4fauzmvkimd4uzucuunt6gmkypjlqh4omle4uqx4@cbknudobc57g>
Date: Tue, 17 Sep 2024 08:39:37 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Haylen Chu <heylenay@...look.com>
Cc: Michael Turquette <mturquette@...libre.com>, 
	Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	linux-riscv@...ts.infradead.org, linux-clk@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Inochi Amaoto <inochiama@...look.com>, 
	Chen Wang <unicornxdotw@...mail.com>, Jisheng Zhang <jszhang@...nel.org>
Subject: Re: [PATCH v2 2/3] dt-bindings: clock: spacemit: Add clock
 controllers of Spacemit K1 SoC

On Mon, Sep 16, 2024 at 10:23:09PM +0000, Haylen Chu wrote:
> Add definition for the clock controllers of Spacemit K1 SoC. The clock
> tree is managed by several SoC parts, thus different compatible strings
> are added for each.
> 
> spacemit,k1-syscon.yaml is updated as well to allow clock controller
> being its subnode.
> 
> Signed-off-by: Haylen Chu <heylenay@...look.com>

Please order patches correctly. First this, then the parent so you will
not submit incomplete binding.

You still must test it, though :(

> ---
>  .../bindings/clock/spacemit,k1-ccu.yaml       |  71 +++++++
>  .../soc/spacemit/spacemit,k1-syscon.yaml      |   4 +
>  include/dt-bindings/clock/spacemit,k1-ccu.h   | 198 ++++++++++++++++++
>  3 files changed, 273 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/clock/spacemit,k1-ccu.yaml
>  create mode 100644 include/dt-bindings/clock/spacemit,k1-ccu.h
> 
> diff --git a/Documentation/devicetree/bindings/clock/spacemit,k1-ccu.yaml b/Documentation/devicetree/bindings/clock/spacemit,k1-ccu.yaml
> new file mode 100644
> index 000000000000..0186722cfd87
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/spacemit,k1-ccu.yaml
> @@ -0,0 +1,71 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/spacemit,k1-ccu.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Spacemit K1 SoC Clock Controller
> +
> +maintainers:
> +  - Haylen Chu <heylenay@...look.com>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - spacemit,k1-ccu-apbs
> +      - spacemit,k1-ccu-mpmu
> +      - spacemit,k1-ccu-apbc
> +      - spacemit,k1-ccu-apmu
> +
> +  clocks:
> +    minItems: 4

Drop

> +    maxItems: 4
> +
> +  clock-names:
> +    items:
> +      - const: clk_32k
> +      - const: vctcxo_1
> +      - const: vctcxo_24
> +      - const: vctcxo_3
> +
> +  spacemit,mpmu:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description:
> +      Phandle to the syscon managing "Main PMU (MPMU)" registers. It is used to
> +      check PLL lock status.
> +
> +  "#clock-cells":
> +    const: 1
> +    description:
> +      See <dt-bindings/clock/spacemit,k1-ccu.h> for valid indices.
> +
> +required:
> +  - compatible
> +  - "#clock-cells"
> +
> +additionalProperties: false

Move it after allOf block

> +
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: spacemit,k1-ccu-apbs
> +    then:
> +      required:
> +        - compatible
> +        - "#clock-cells"

Drop both, redundant


> +        - spacemit,mpmu
> +
> +examples:
> +  - |
> +    syscon_apbs: system-control@...90000 {

Only one example, keep it in parent node.

> +        compatible = "spacemit,k1-apbs-syscon", "syscon", "simple-mfd";
> +        reg = <0x0 0xd4090000 0x0 0x1000>;
> +
> +        clk_apbs: clock-controller {
> +            compatible = "spacemit,k1-ccu-apbs";
> +            #clock-cells = <1>;
> +            spacemit,mpmu = <&syscon_mpmu>;
> +        };
> +    };
> diff --git a/Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-syscon.yaml b/Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-syscon.yaml
> index 4e3a72b48aff..08efda207101 100644
> --- a/Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-syscon.yaml
> +++ b/Documentation/devicetree/bindings/soc/spacemit/spacemit,k1-syscon.yaml
> @@ -27,6 +27,10 @@ properties:
>    reg:
>      maxItems: 1
>  
> +  clock-controller:
> +    $ref: /schemas/clock/spacemit,k1-ccu.yaml#
> +    type: object
> +

This MUST be part of other patch.

Best regards,
Krzysztof