Add a device tree property to configure the PDM sampling edge for each digital microphone.
CC: Rob Herring robh@kernel.org Signed-off-by: Dan Murphy dmurphy@ti.com ---
v3 - Updated description to be more descriptive and fixed example.
.../bindings/sound/tlv320adcx140.yaml | 24 +++++++++++++++++++ 1 file changed, 24 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml b/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml index ab2268c0ee67..daa6cc0e031b 100644 --- a/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml +++ b/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml @@ -63,6 +63,29 @@ properties: - $ref: /schemas/types.yaml#/definitions/uint32 - enum: [0, 1, 2]
+ ti,pdm-edge-select: + description: | + Defines the PDMCLK sampling edge configuration for the PDM inputs. This + array is defined as <PDMIN1 PDMIN2 PDMIN3 PDMIN4>. + + 0 - (default) Odd channel is latched on the negative edge and even + channel is latched on the the positive edge. + 1 - Odd channel is latched on the positive edge and even channel is + latched on the the negative edge. + + PDMIN1 - PDMCLK latching edge used for channel 1 and 2 data + PDMIN2 - PDMCLK latching edge used for channel 3 and 4 data + PDMIN3 - PDMCLK latching edge used for channel 5 and 6 data + PDMIN4 - PDMCLK latching edge used for channel 7 and 8 data + + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32-array + - minItems: 1 + maxItems: 4 + items: + maximum: 1 + default: [0, 0, 0, 0] + required: - compatible - reg @@ -77,6 +100,7 @@ examples: compatible = "ti,tlv320adc5140"; reg = <0x4c>; ti,mic-bias-source = <6>; + ti,pdm-edge-select = <0 1 0 1>; reset-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>; }; };