On Tue, Jun 28, 2022 at 7:00 AM Rob Herring robh@kernel.org wrote:
On Fri, Jun 17, 2022 at 03:44:36PM +0800, Shengjiu Wang wrote:
"fsl,dataline" is added to configure the dataline of SAI. It has 3 value for each configuration, first one means the type: I2S(1) or PDM(2), second one is dataline mask for 'rx', third one is dataline mask for 'tx'. for example:
fsl,dataline = <1 0xff 0xff 2 0xff 0x11>,
it means I2S type rx mask is 0xff, tx mask is 0xff, PDM type rx mask is 0xff, tx mask is 0x11 (dataline 1 and 4 enabled).
Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com
Documentation/devicetree/bindings/sound/fsl-sai.txt | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/fsl-sai.txt
b/Documentation/devicetree/bindings/sound/fsl-sai.txt
index c71c5861d787..4c66e6a1a533 100644 --- a/Documentation/devicetree/bindings/sound/fsl-sai.txt +++ b/Documentation/devicetree/bindings/sound/fsl-sai.txt @@ -49,6 +49,14 @@ Required properties: receive data by following their own bit clocks
and
frame sync clocks separately.
- fsl,dataline : configure the dataline. it has 3 value for
each configuration
first one means the type: I2S(1) or PDM(2)second one is dataline mask for 'rx'third one is dataline mask for 'tx'.for example: fsl,dataline = <1 0xff 0xff 20xff 0x11>;
it means I2S type rx mask is 0xff, tx mask is0xff, PDM type
rx mask is 0xff, tx mask is 0x11 (dataline 1and 4 enabled).
You mean 0 and 4 enabled? Or 1 and 4?
Should be 'dataline 1 and 5 enabled, index start from 1'. I will fix it.
How many 3 cell entries can you have?
There is no limitation for entries, the code in the driver will query the length first by of_property_count_u32_elems() then read the values.
best regards wang shengjiu