[PATCH v4 2/3] ASoC: dt-bindings: sound: renesas,rz-ssi: Update slave dma channel configuration parameters

[Geert Uytterhoeven]

Hi Rob,

On Fri, Aug 13, 2021 at 10:12 PM Rob Herring <robh at kernel.org> wrote:
> On Mon, Aug 09, 2021 at 02:57:33PM +0200, Geert Uytterhoeven wrote:
> > On Fri, Aug 6, 2021 at 12:29 PM Biju Das <biju.das.jz at bp.renesas.com> wrote:
> > > The DMAC driver on RZ/G2L expects the slave channel configuration
> > > to be passed in dmas property.
> > > This patch updates the example node to include the encoded slave
> > > channel configuration.
> > >
> > > Fixes: 5df6dfbb6de815ba3a("ASoC: dt-bindings: sound: renesas,rz-ssi: Document DMA support")
> > > Signed-off-by: Biju Das <biju.das.jz at bp.renesas.com>
> > > Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj at bp.renesas.com>
> >
> > > v3->v4:
> > >  * Updated bindings as the DMAC driver on RZ/G2L expects the
> > >    slave channel configuration to be passed in dmas property.
> >
> > Thanks for the update!
> >
> > > --- a/Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml
> > > +++ b/Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml
> > > @@ -93,8 +93,8 @@ examples:
> > >              clock-names = "ssi", "ssi_sfr", "audio_clk1", "audio_clk2";
> > >              power-domains = <&cpg>;
> > >              resets = <&cpg R9A07G044_SSI0_RST_M2_REG>;
> > > -            dmas = <&dmac 0x255>,
> > > -                   <&dmac 0x256>;
> > > +            dmas = <&dmac 0x2655>,
> > > +                   <&dmac 0x2656>;
> > >              dma-names = "tx", "rx";
> > >              #sound-dai-cells = <0>;
> > >      };
> >
> > I think it would be good to describe the expected format in the description
> > for the dmas property, so the DTS writer knows what the numerical
> > values in the example really mean.
>
> Yes, but that's a property of the DMA controller binding, not this one.
> It could vary from chip to chip.

Right, unlike the other Renesas SoCs, RZ/G2L uses the normal DMAC for
audio, not an audio-specific one.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

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