linux-kernel - Re: [PATCH v3 1/2] ASoC: dt-bindings: fsl,xcvr: Add compatible string for i.MX95

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Date: Wed, 29 May 2024 10:18:18 +0800
From: Shengjiu Wang <shengjiu.wang@...il.com>
To: Rob Herring <robh@...nel.org>
Cc: Shengjiu Wang <shengjiu.wang@....com>, lgirdwood@...il.com, broonie@...nel.org, 
	krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org, 
	linux-sound@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Xiubo.Lee@...il.com, festevam@...il.com, 
	nicoleotsuka@...il.com, perex@...ex.cz, tiwai@...e.com, 
	alsa-devel@...a-project.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH v3 1/2] ASoC: dt-bindings: fsl,xcvr: Add compatible string
 for i.MX95

On Tue, May 28, 2024 at 11:15 PM Rob Herring <robh@...nel.org> wrote:
>
> On Tue, May 21, 2024 at 06:13:35PM +0800, Shengjiu Wang wrote:
> > Add compatible string "fsl,imx95-xcvr" for i.MX95 platform.
> >
> > The difference between each platform is in below table.
> >
> > +---------+--------+----------+--------+
> > |  SOC          |  PHY   | eARC/ARC | SPDIF  |
> > +---------+--------+----------+--------+
> > | i.MX8MP |  V1    |  Yes     |  Yes   |
> > +---------+--------+----------+--------+
> > | i.MX93  |  N/A   |  N/A     |  Yes   |
> > +---------+--------+----------+--------+
> > | i.MX95  |  V2    |  N/A     |  Yes   |
> > +---------+--------+----------+--------+
> >
> > On i.MX95, there are two PLL clock sources, they are the parent
> > clocks of the XCVR root clock. one is for 8kHz series rates, named
> > as 'pll8k', another one is for 11kHz series rates, named as 'pll11k'.
> > They are optional clocks, if there are such clocks, then the driver
> > can switch between them to support more accurate sample rates.
> >
> > As 'pll8k' and 'pll11k' are optional, then add 'minItems: 4' for
> > clocks and clock-names properties.
> >
> > On i.MX95, the 'interrupts' configuration has the same constraint
> > as i.MX93.
> >
> > Only on i.MX8MP, the 'resets' is required, but for i.MX95 and i.MX93
> > there is no such hardware setting.
> >
> > Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
> > ---
> >  .../devicetree/bindings/sound/fsl,xcvr.yaml   | 37 ++++++++++++++++++-
> >  1 file changed, 36 insertions(+), 1 deletion(-)
> >
> > diff --git a/Documentation/devicetree/bindings/sound/fsl,xcvr.yaml b/Documentation/devicetree/bindings/sound/fsl,xcvr.yaml
> > index 0eb0c1ba8710..d1dcc27655eb 100644
> > --- a/Documentation/devicetree/bindings/sound/fsl,xcvr.yaml
> > +++ b/Documentation/devicetree/bindings/sound/fsl,xcvr.yaml
> > @@ -22,6 +22,7 @@ properties:
> >      enum:
> >        - fsl,imx8mp-xcvr
> >        - fsl,imx93-xcvr
> > +      - fsl,imx95-xcvr
> >
> >    reg:
> >      items:
> > @@ -49,6 +50,9 @@ properties:
> >        - description: PHY clock
> >        - description: SPBA clock
> >        - description: PLL clock
> > +      - description: PLL clock source for 8kHz series
> > +      - description: PLL clock source for 11kHz series
> > +    minItems: 4
> >
> >    clock-names:
> >      items:
> > @@ -56,6 +60,9 @@ properties:
> >        - const: phy
> >        - const: spba
> >        - const: pll_ipg
> > +      - const: pll8k
> > +      - const: pll11k
> > +    minItems: 4
> >
> >    dmas:
> >      items:
> > @@ -79,15 +86,24 @@ required:
> >    - clock-names
> >    - dmas
> >    - dma-names
> > -  - resets
> >
> >  allOf:
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            const: fsl,imx8mp-xcvr
> > +    then:
> > +      required:
> > +        - resets
> > +
> >    - if:
> >        properties:
> >          compatible:
> >            contains:
> >              enum:
> >                - fsl,imx93-xcvr
> > +              - fsl,imx95-xcvr
> >      then:
> >        properties:
> >          interrupts:
> > @@ -98,6 +114,25 @@ allOf:
> >          interrupts:
> >            maxItems: 1
> >
> > +  - if:
> > +      properties:
> > +        compatible:
> > +          contains:
> > +            enum:
> > +              - fsl,imx95-xcvr
> > +    then:
> > +      properties:
> > +        clocks:
> > +          maxItems: 6
> > +        clock-names:
> > +          maxItems: 6
>
> 6 is already the max. Drop these and add a 'not' into the if schema (or
> list out the other compatibles).

Ok, will update it.

best regards
Shengjiu Wang
>
> > +    else:
> > +      properties:
> > +        clocks:
> > +          maxItems: 4
> > +        clock-names:
> > +          maxItems: 4
> > +
> >  additionalProperties: false
> >
> >  examples:
> > --
> > 2.34.1
> >