[PATCH 4/4] dt-bindings: sound: intel, keembay-i2s: Add channel-max property

[Michael Sit Wei Hong <michael.wei.hong.sit@intel.com>]

Add a property that configures the interface to the desired max number
of capture channels. The platform may have multiple interfaces with
different number of capture channels.

Signed-off-by: Michael Sit Wei Hong <michael.wei.hong.sit@intel.com>
Reviewed-by: Sia Jee Heng <jee.heng.sia@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
---
 .../devicetree/bindings/sound/intel,keembay-i2s.yaml      | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/intel,keembay-i2s.yaml b/Documentation/devicetree/bindings/sound/intel,keembay-i2s.yaml
index 175e4fb0c315..9345fc3a2b95 100644
--- a/Documentation/devicetree/bindings/sound/intel,keembay-i2s.yaml
+++ b/Documentation/devicetree/bindings/sound/intel,keembay-i2s.yaml
@@ -43,6 +43,10 @@ properties:
       - const: osc
       - const: apb_clk
 
+  channel-max:
+    items:
+      - description: Maximum audio input channels
+
 required:
   - compatible
   - "#sound-dai-cells"
@@ -51,6 +55,9 @@ required:
   - clock-names
   - interrupts
 
+optional:
+  - channel-max
+
 examples:
   - |
      #include <dt-bindings/interrupt-controller/arm-gic.h>
@@ -65,4 +72,5 @@ examples:
          interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
          clock-names = "osc", "apb_clk";
          clocks = <&scmi_clk KEEM_BAY_PSS_AUX_I2S3>, <&scmi_clk KEEM_BAY_PSS_I2S3>;
+         channel-max = <2>;
      };
-- 
2.17.1