dt-bindings: mfd: rk817: Merge support for RK809

The Rockchip RK809 PMIC is compatible with RK817 and provides the same
capabilities, except for the battery charger manager.

There are also minor regulator related differences: BOOST and OTG_SWITCH
are specific to RK817, while DCDC_REG5, SWITCH_REG1 and SWITCH_REG2 are
provided RK809.

The current binding for RK809 doesn't document the audio codec
properties, although it has been already in use by several boards:
rk3566-quartz64-b, k3566-roc-pc, rk3568-evb1-v10, rk3568-lubancat-2,
rk3568-odroid-m1, rk3568-rock-3a.

Therefore dtbs_check fails for all of them:

  DTC_CHK arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dtb
  rk3568-rock-3a.dtb: pmic@20: '#sound-dai-cells', 'assigned-clock-parents', 'assigned-clocks', 'clock-names', 'clocks', 'codec' do not match any of the regexes: 'pinctrl-[0-9]+'
    from schema $id: http://devicetree.org/schemas/mfd/rockchip,rk809.yaml#

Additionally, the example in rockchip,rk809 binding is not able to
actually test the schema since it uses a wrong compatible
'rockchip,rk808' instead of the expected 'rockchip,rk809'.

Instead of duplicating even more content, merge the RK809 support into
the more inclusive RK817 schema and drop the now obsolete rockchip,rk809
related file.

Fixes: 6c38ca0 ("dt-bindings: mfd: rk808: Convert bindings to yaml")
Signed-off-by: Cristian Ciocaltea <[email protected]>
Reviewed-by: Conor Dooley <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lee Jones <[email protected]>

Author: cristicc

Documentation/devicetree/bindings/mfd/rockchip,rk809.yaml

@@ -4,20 +4,21 @@
 $id: http://devicetree.org/schemas/mfd/rockchip,rk817.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: RK817 Power Management Integrated Circuit
+title: RK809/RK817 Power Management Integrated Circuit
 
 maintainers:
   - Chris Zhong <[email protected]>
   - Zhang Qing <[email protected]>
 
 description: |
-  Rockchip RK817 series PMIC. This device consists of an i2c controlled MFD
-  that includes regulators, an RTC, a power button, an audio codec, and a
-  battery charger manager.
+  Rockchip RK809/RK817 series PMIC. This device consists of an i2c controlled
+  MFD that includes regulators, an RTC, a power button and an audio codec.
+  The RK817 variant also provides a battery charger manager.
 
 properties:
   compatible:
     enum:
+      - rockchip,rk809
       - rockchip,rk817
 
   reg:
@@ -89,20 +90,20 @@ properties:
 
   vcc8-supply:
     description:
-      The input supply for BOOST.
+      The input supply for BOOST on RK817, or for SWITCH_REG2 on RK809.
 
   vcc9-supply:
     description:
-      The input supply for OTG_SWITCH.
+      The input supply for OTG_SWITCH on RK817,
+      or for DCDC_REG5 and SWITCH_REG1 on RK809.
 
   regulators:
     type: object
     patternProperties:
-      "^(LDO_REG[1-9]|DCDC_REG[1-4]|BOOST|OTG_SWITCH)$":
-        type: object
+      "^(LDO_REG[1-9]|DCDC_REG[1-5]|BOOST|OTG_SWITCH|SWITCH_REG[1-2])$":
+        $ref: /schemas/regulator/regulator.yaml
         unevaluatedProperties: false
-        $ref: /schemas/regulator/regulator.yaml#
-    unevaluatedProperties: false
+    additionalProperties: false
 
   codec:
     type: object
@@ -172,6 +173,22 @@ allOf:
         clock-output-names:
           maxItems: 2
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: rockchip,rk817
+    then:
+      properties:
+        regulators:
+          patternProperties:
+            "^(DCDC_REG5|SWITCH_REG[1-2])$": false
+    else:
+      properties:
+        regulators:
+          patternProperties:
+            "^(BOOST|OTG_SWITCH)$": false
+
 required:
   - compatible
   - reg