linux-kernel - Re: [PATCH v5 09/21] dt-bindings: clock: thead: Add GPU clkgen reset property

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Message-ID: <20250221-imaginary-ebony-macaque-aace8d@krzk-bin>
Date: Fri, 21 Feb 2025 10:11:38 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Michal Wilczynski <m.wilczynski@...sung.com>
Cc: mturquette@...libre.com, sboyd@...nel.org, robh@...nel.org, 
	krzk+dt@...nel.org, conor+dt@...nel.org, drew@...7.com, guoren@...nel.org, 
	wefu@...hat.com, jassisinghbrar@...il.com, paul.walmsley@...ive.com, 
	palmer@...belt.com, aou@...s.berkeley.edu, frank.binns@...tec.com, 
	matt.coster@...tec.com, maarten.lankhorst@...ux.intel.com, mripard@...nel.org, 
	tzimmermann@...e.de, airlied@...il.com, simona@...ll.ch, ulf.hansson@...aro.org, 
	jszhang@...nel.org, p.zabel@...gutronix.de, m.szyprowski@...sung.com, 
	linux-clk@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-riscv@...ts.infradead.org, dri-devel@...ts.freedesktop.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH v5 09/21] dt-bindings: clock: thead: Add GPU clkgen reset
 property

On Wed, Feb 19, 2025 at 03:02:27PM +0100, Michal Wilczynski wrote:
> Add a mandatory reset property for the TH1520 VO clock controller that
> handles the GPU clocks. This reset line controls the GPU CLKGEN reset,
> which is required for proper GPU clock operation.
> 
> The reset property is only required for the "thead,th1520-clk-vo"
> compatible, as it specifically handles the GPU-related clocks.
> 
> Signed-off-by: Michal Wilczynski <m.wilczynski@...sung.com>
> ---
>  .../bindings/clock/thead,th1520-clk-ap.yaml      | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/clock/thead,th1520-clk-ap.yaml b/Documentation/devicetree/bindings/clock/thead,th1520-clk-ap.yaml
> index 9d058c00ab3d..6ea8202718d0 100644
> --- a/Documentation/devicetree/bindings/clock/thead,th1520-clk-ap.yaml
> +++ b/Documentation/devicetree/bindings/clock/thead,th1520-clk-ap.yaml
> @@ -40,6 +40,12 @@ properties:
>              (integer PLL) typically running at 792 MHz (FOUTPOSTDIV), with
>              a maximum FOUTVCO of 2376 MHz.
>  
> +  resets:
> +    maxItems: 1
> +    description:
> +      Required for "thead,th1520-clk-vo". This reset line controls the

You just added the compatible in other patch, so are you saying you
added knowingly incomplete code?

No, this must be squashed.

> +      GPU CLKGEN reset which is required for proper GPU clock operation.
> +
>    "#clock-cells":
>      const: 1
>      description:
> @@ -51,6 +57,16 @@ required:
>    - clocks
>    - "#clock-cells"
>  
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: thead,th1520-clk-vo
> +    then:
> +      required:
> +        - resets

else:
? What's there? Also reset or no?

Best regards,
Krzysztof