Re: [PATCH 3/4] dt-bindings: clock: ti: Convert fixed-factor-clock to yaml

[Sukrut Bellary <sbellary@baylibre.com>]

On Fri, Apr 04, 2025 at 02:40:46PM -0500, Rob Herring wrote:
> On Thu, Apr 03, 2025 at 06:44:59PM -0700, Sukrut Bellary wrote:
> > Convert TI fixed-factor-clock binding to yaml.
> > 
> > This uses the ti,autoidle.yaml for clock autoidle support.
> > Clean up the example to meet the current standards.
> > 
> > Add the creator of the original binding as a maintainer.
> > 
> > Signed-off-by: Sukrut Bellary <sbellary@baylibre.com>
> > ---
> >  .../bindings/clock/ti/fixed-factor-clock.txt  | 42 ----------
> >  .../clock/ti/ti,fixed-factor-clock.yaml       | 77 +++++++++++++++++++
> >  2 files changed, 77 insertions(+), 42 deletions(-)
> >  delete mode 100644 Documentation/devicetree/bindings/clock/ti/fixed-factor-clock.txt
> >  create mode 100644 Documentation/devicetree/bindings/clock/ti/ti,fixed-factor-clock.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/clock/ti/fixed-factor-clock.txt b/Documentation/devicetree/bindings/clock/ti/fixed-factor-clock.txt
> > deleted file mode 100644
> > index dc69477b6e98..000000000000
> > --- a/Documentation/devicetree/bindings/clock/ti/fixed-factor-clock.txt
> > +++ /dev/null
> > @@ -1,42 +0,0 @@
> > -Binding for TI fixed factor rate clock sources.
> > -
> > -This binding uses the common clock binding[1], and also uses the autoidle
> > -support from TI autoidle clock [2].
> > -
> > -[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
> > -[2] Documentation/devicetree/bindings/clock/ti/autoidle.txt
> > -
> > -Required properties:
> > -- compatible : shall be "ti,fixed-factor-clock".
> > -- #clock-cells : from common clock binding; shall be set to 0.
> > -- ti,clock-div: fixed divider.
> > -- ti,clock-mult: fixed multiplier.
> > -- clocks: parent clock.
> > -
> > -Optional properties:
> > -- clock-output-names : from common clock binding.
> > -- ti,autoidle-shift: bit shift of the autoidle enable bit for the clock,
> > -  see [2]
> > -- reg: offset for the autoidle register of this clock, see [2]
> > -- ti,invert-autoidle-bit: autoidle is enabled by setting the bit to 0, see [2]
> > -- ti,set-rate-parent: clk_set_rate is propagated to parent
> > -
> > -Example:
> > -	clock {
> > -		compatible = "ti,fixed-factor-clock";
> > -		clocks = <&parentclk>;
> > -		#clock-cells = <0>;
> > -		ti,clock-div = <2>;
> > -		ti,clock-mult = <1>;
> > -	};
> > -
> > -	dpll_usb_clkdcoldo_ck: dpll_usb_clkdcoldo_ck {
> > -		#clock-cells = <0>;
> > -		compatible = "ti,fixed-factor-clock";
> > -		clocks = <&dpll_usb_ck>;
> > -		ti,clock-div = <1>;
> > -		ti,autoidle-shift = <8>;
> > -		reg = <0x01b4>;
> > -		ti,clock-mult = <1>;
> > -		ti,invert-autoidle-bit;
> > -	};
> > diff --git a/Documentation/devicetree/bindings/clock/ti/ti,fixed-factor-clock.yaml b/Documentation/devicetree/bindings/clock/ti/ti,fixed-factor-clock.yaml
> > new file mode 100644
> > index 000000000000..f597aedbad05
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/clock/ti/ti,fixed-factor-clock.yaml
> > @@ -0,0 +1,77 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/clock/ti/ti,fixed-factor-clock.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: TI fixed factor rate clock sources
> > +
> > +maintainers:
> > +  - Tero Kristo <kristo@kernel.org>
> > +  - Sukrut Bellary <sbellary@baylibre.com>
> > +
> > +description: |
> 
> Don't need '|'.
> 
> > +  This consists of a divider and a multiplier used to generate
> > +  a fixed rate clock. This also uses the autoidle support from
> > +  TI autoidle clock.
> > +
> > +allOf:
> > +  - $ref: /schemas/clock/ti/ti,autoidle.yaml#
> 
> You can drop '/schemas/clock/ti/'
> 
> > +
> > +properties:
> > +  compatible:
> > +    const: ti,fixed-factor-clock
> > +
> > +  "#clock-cells":
> > +    const: 0
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  ti,clock-div:
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    description: Fixed divider
> 
> Constraints?
> 
> > +
> > +  ti,clock-mult:
> > +    $ref: /schemas/types.yaml#/definitions/uint32
> > +    description: Fixed multiplier
> 
> Constraints?
> 
> > +
> > +  clocks:
> 
>        maxItems: 1
> 
> > +    description:
> > +      Link to phandle of parent clock.
> 
> Drop the description
> 
> > +
> > +  clock-output-names:
> 
>        maxItems: 1
> 
> > +    description:
> > +      From common clock binding
> 
> Drop

Thanks for the review.
I will fix all of the above issues.

> > +
> > +  ti,set-rate-parent:
> > +    description:
> > +      Propagate to parent clock
> > +    type: boolean
> > +
> > +required:
> > +  - compatible
> > +  - clocks
> > +  - "#clock-cells"
> > +  - ti,clock-mult
> > +  - ti,clock-div
> > +
> > +unevaluatedProperties: false
> > +
> > +examples:
> > +  - |
> > +    bus{
> > +        #address-cells = <1>;
> > +        #size-cells = <0>;
> > +
> > +        clock@1b4 {
> > +            compatible = "ti,fixed-factor-clock";
> > +            reg = <0x1b4>;
> > +            clocks = <&dpll_usb_ck>;
> > +            #clock-cells = <0>;
> > +            ti,clock-mult = <1>;
> > +            ti,clock-div = <1>;
> > +            ti,autoidle-shift = <8>;
> > +            ti,invert-autoidle-bit;
> > +        };
> > +    };
> > -- 
> > 2.34.1
> >