[alsa-devel] [PATCH V2 1/2] ASoC: dt-bindings: fsl_asrc: add compatible string for imx8qm

[S.j. Wang]

Hi Rob
> 
> 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