Re: [PATCH v4 3/4] ASoC: dt-bindings: fsl-sai: allow only one dma-names

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On Wed, Mar 06, 2024 at 06:45:13PM +0000, Conor Dooley wrote:
> On Tue, Mar 05, 2024 at 12:33:04PM -0500, Frank Li wrote:
> > Some sai only connect one direction dma (rx/tx) in SOC. For example:
> > imx8qxp sai5 only connect tx dma channel. So allow only one "rx" or "tx"
> > for dma-names.
> > 
> > Remove description under dmas because no user use index to get dma channel.
> > All user use 'dma-names' to get correct dma channel. dma-names already in
> > 'required' list.
> 
> Acked-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
> 
> > Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
> > ---
> >  Documentation/devicetree/bindings/sound/fsl,sai.yaml | 13 ++++++-------
> >  1 file changed, 6 insertions(+), 7 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/sound/fsl,sai.yaml b/Documentation/devicetree/bindings/sound/fsl,sai.yaml
> > index 2456d958adeef..6f551c68d33db 100644
> > --- a/Documentation/devicetree/bindings/sound/fsl,sai.yaml
> > +++ b/Documentation/devicetree/bindings/sound/fsl,sai.yaml
> > @@ -81,15 +81,14 @@ properties:
> >  
> >    dmas:
> >      minItems: 1
> > -    items:
> > -      - description: DMA controller phandle and request line for RX
> > -      - description: DMA controller phandle and request line for TX
> > +    maxItems: 2
> >  
> >    dma-names:
> > -    minItems: 1
> > -    items:
> > -      - const: rx
> > -      - const: tx
> > +    oneOf:
> > +      - items:
> > +          - const: rx
> > +          - const: tx
> > +      - enum: [ rx, tx ]
> 
> I'm not entirely sure if this was Rob's suggestion, I got the impression
> he was suggesting that in the two items case we'd not care about the
> order. But while I think this is different to that suggestion it's also
> not wrong.

I log this at cover-letter. b4 can't support write change log at every
patch yet. Rob's suggest was not work. dt-binding check complain too long
if there are two dma-names = "rx", "tx". 

Frank

> 
> Thanks,
> Conor.






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