[PATCH v2 1/3] dt-bindings: rockchip: Document rk809 support for rk817 audio codec

[Tim Lunn]

Rockchip RK809 shares the same audio codec as the rk817 mfd, it is also
using the same rk817_codec driver. However it is missing from the
bindings.

Update dt-binding documentation for rk809 to include the audio codec
properties. This fixes the following warning from dtb check:

pmic@20: '#sound-dai-cells', 'assigned-clock-parents', 'assigned-clocks',
   'clock-names', 'clocks', 'codec' do not match any of the regexes:
   'pinctrl-[0-9]+'

Signed-off-by: Tim Lunn <tim@xxxxxxxxxxxxxx>
---

(no changes since v1)

 .../bindings/mfd/rockchip,rk809.yaml          | 30 ++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mfd/rockchip,rk809.yaml b/Documentation/devicetree/bindings/mfd/rockchip,rk809.yaml
index 839c0521f1e5..bac2e751e2f2 100644
--- a/Documentation/devicetree/bindings/mfd/rockchip,rk809.yaml
+++ b/Documentation/devicetree/bindings/mfd/rockchip,rk809.yaml
@@ -12,7 +12,7 @@ maintainers:
 
 description: |
   Rockchip RK809 series PMIC. This device consists of an i2c controlled MFD
-  that includes regulators, an RTC, and power button.
+  that includes regulators, an RTC, a power button, and an audio codec.
 
 properties:
   compatible:
@@ -93,6 +93,34 @@ properties:
         unevaluatedProperties: false
     unevaluatedProperties: false
 
+  clocks:
+    description:
+      The input clock for the audio codec.
+
+  clock-names:
+    description:
+      The clock name for the codec clock.
+    items:
+      - const: mclk
+
+  '#sound-dai-cells':
+    description:
+      Needed for the interpretation of sound dais.
+    const: 0
+
+  codec:
+    description: |
+      The child node for the codec to hold additional properties. If no
+      additional properties are required for the codec, this node can be
+      omitted.
+    type: object
+    additionalProperties: false
+    properties:
+      rockchip,mic-in-differential:
+        type: boolean
+        description:
+          Describes if the microphone uses differential mode.
+
 allOf:
   - if:
       properties:
-- 
2.40.1