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Message-ID: <VE1PR04MB6479DD8BDA0A8B6981F61532E3790@VE1PR04MB6479.eurprd04.prod.outlook.com>
Date: Wed, 6 Nov 2019 10:50:34 +0000
From: "S.j. Wang" <shengjiu.wang@....com>
To: "S.j. Wang" <shengjiu.wang@....com>, Rob Herring <robh@...nel.org>
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Subject: Re: [PATCH V2 1/2] ASoC: dt-bindings: fsl_asrc: add compatible string
for imx8qm
Hi Rob
>
> Hi
> >
> > On Wed, Oct 30, 2019 at 07:41:26PM +0800, Shengjiu Wang wrote:
> > > In order to support the two asrc modules in imx8qm, we need to add
> > > compatible string "fsl,imx8qm-asrc0" and "fsl,imx8qm-asrc1"
> >
> > Are the blocks different in some way?
> >
> > If not, why do you need to distinguish them?
> >
> The internal clock mapping is different for each module.
>
Or we can use one compatible string, but need add another property
"fsl,asrc-clk-map" to distinguish the different clock map.
The change is in below.
Which one do you think is better?
Required properties:
- - compatible : Contains "fsl,imx35-asrc" or "fsl,imx53-asrc".
+ - compatible : Contains "fsl,imx35-asrc", "fsl,imx53-asrc",
+ "fsl,imx8qm-asrc".
- reg : Offset and length of the register set for the device.
@@ -35,6 +36,11 @@ Required properties:
- fsl,asrc-width : Defines a mutual sample width used by DPCM Back Ends.
+ - fsl,asrc-clk-map : Defines clock map used in driver. which is required
+ by imx8qm
+ <0> - select the map for asrc0
+ <1> - select the map for asrc1
+
Optional properties:
Best regards
Wang shengjiu
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