Add an array property that configures the General Purpose Input (GPI)
register. The device has 4 GPI pins and each pin can be configured in 1
of 7 different ways.
Signed-off-by: Dan Murphy <dmurphy@xxxxxx>
---
.../bindings/sound/tlv320adcx140.yaml | 27 +++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml b/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml
index daa6cc0e031b..e8a69b1c7ca9 100644
--- a/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml
+++ b/Documentation/devicetree/bindings/sound/tlv320adcx140.yaml
@@ -86,6 +86,32 @@ properties:
maximum: 1
default: [0, 0, 0, 0]
+ ti,gpi-config:
+ description: |
+ Defines the configuration for the general purpose input pins (GPI).
+ The array is defined as <GPI1 GPI2 GPI3 GPI4>.
+
+ 0 - (default) disabled
+ 1 - GPIX is configured as a general-purpose input (GPI)
+ 2 - GPIX is configured as a master clock input (MCLK)
+ 3 - GPIX is configured as an ASI input for daisy-chain (SDIN)
+ 4 - GPIX is configured as a PDM data input for channel 1 and channel
+ (PDMDIN1)
+ 5 - GPIX is configured as a PDM data input for channel 3 and channel
+ (PDMDIN2)
+ 6 - GPIX is configured as a PDM data input for channel 5 and channel
+ (PDMDIN3)
+ 7 - GPIX is configured as a PDM data input for channel 7 and channel
+ (PDMDIN4)
+
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32-array
+ - minItems: 1
+ maxItems: 4
+ items:
+ maximum: 1
+ default: [0, 0, 0, 0]
+
required:
- compatible
- reg
@@ -101,6 +127,7 @@ examples:
reg = <0x4c>;
ti,mic-bias-source = <6>;
ti,pdm-edge-select = <0 1 0 1>;
+ ti,gpi-config = <4 5 6 7>;
reset-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
};
};
--
2.26.2
