The McBSP uses an internal sample rate generator to provide bit clock or frame clock. This sample rate generator can be programmed to be driven by McBSP's internal clock source or by an external clock source (located on CLKS pin). The external clock source is not described in the bindings.
Add an optional clock item that allows to select an external clock as sample rate generator's input.
Signed-off-by: Bastien Curutchet bastien.curutchet@bootlin.com Reviewed-by: Rob Herring robh@kernel.org --- Documentation/devicetree/bindings/sound/davinci-mcbsp.yaml | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/davinci-mcbsp.yaml b/Documentation/devicetree/bindings/sound/davinci-mcbsp.yaml index 139b594dd192..0c2b1936c6a1 100644 --- a/Documentation/devicetree/bindings/sound/davinci-mcbsp.yaml +++ b/Documentation/devicetree/bindings/sound/davinci-mcbsp.yaml @@ -50,12 +50,16 @@ properties: - const: tx
clocks: + minItems: 1 items: - description: functional clock + - description: external input clock for sample rate generator.
clock-names: + minItems: 1 items: - const: fck + - const: clks
power-domains: maxItems: 1