dt-bindings: pinctrl: nvidia,tegra234-pinmux: Restructure common schema

The structure of the NVIDIA Tegra234 common pinmux schema doesn't work
for restricting properties because a child node schema can't be extended
with additional properties from another schema defining the same child
node. The 2 child node schemas are evaluated independently as the
schemas are not recursively combined in any way.

As the common schema is almost all the child node schema anyways, just
remove the parent node from the common schema. Then add 'reg' and adjust
the $ref's in the users of the common schema.

Signed-off-by: Rob Herring <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Linus Walleij <[e-mail]>

Documentation/devicetree/bindings/pinctrl/nvidia,tegra234-pinmux-aon.yaml

···
   - Thierry Reding <[e-mail]>
   - Jon Hunter <[e-mail]>
 
-$ref: nvidia,tegra234-pinmux-common.yaml
-
 properties:
   compatible:
     const: nvidia,tegra234-pinmux-aon
+
+  reg:
+    maxItems: 1
 
 patternProperties:
   "^pinmux(-[a-z0-9-]+)?$":
···
 
     # pin groups
     additionalProperties:
+      $ref: nvidia,tegra234-pinmux-common.yaml
+
       properties:
         nvidia,pins:
           items:

Documentation/devicetree/bindings/pinctrl/nvidia,tegra234-pinmux-common.yaml

···
   - Thierry Reding <[e-mail]>
   - Jon Hunter <[e-mail]>
 
+$ref: nvidia,tegra-pinmux-common.yaml
+
 properties:
-  reg:
-    items:
-      - description: pinmux registers
+  nvidia,function:
+    enum: [ gp, uartc, i2c8, spi2, i2c2, can1, can0, rsvd0, eth0, eth2,
+            eth1, dp, eth3, i2c4, i2c7, i2c9, eqos, pe2, pe1, pe0, pe3,
+            pe4, pe5, pe6, pe7, pe8, pe9, pe10, qspi0, qspi1, qpsi,
+            sdmmc1, sce, soc, gpio, hdmi, ufs0, spi3, spi1, uartb, uarte,
+            usb, extperiph2, extperiph1, i2c3, vi0, i2c5, uarta, uartd,
+            i2c1, i2s4, i2s6, aud, spi5, touch, uartj, rsvd1, wdt, tsc,
+            dmic3, led, vi0_alt, i2s5, nv, extperiph3, extperiph4, spi4,
+            ccla, i2s1, i2s2, i2s3, i2s8, rsvd2, dmic5, dca, displayb,
+            displaya, vi1, dcb, dmic1, dmic4, i2s7, dmic2, dspk0, rsvd3,
+            tsc_alt, istctrl, vi1_alt, dspk1, igpu ]
 
-patternProperties:
-  "^pinmux(-[a-z0-9-]+)?$":
-    type: object
-
-    # pin groups
-    additionalProperties:
-      $ref: nvidia,tegra-pinmux-common.yaml
-      # We would typically use unevaluatedProperties here but that has the
-      # downside that all the properties in the common bindings become valid
-      # for all chip generations. In this case, however, we want the per-SoC
-      # bindings to be able to override which of the common properties are
-      # allowed, since not all pinmux generations support the same sets of
-      # properties. This way, the common bindings define the format of the
-      # properties but the per-SoC bindings define which of them apply to a
-      # given chip.
-      additionalProperties: false
-      properties:
-        nvidia,function:
-          enum: [ gp, uartc, i2c8, spi2, i2c2, can1, can0, rsvd0, eth0, eth2,
-                  eth1, dp, eth3, i2c4, i2c7, i2c9, eqos, pe2, pe1, pe0, pe3,
-                  pe4, pe5, pe6, pe7, pe8, pe9, pe10, qspi0, qspi1, qpsi,
-                  sdmmc1, sce, soc, gpio, hdmi, ufs0, spi3, spi1, uartb, uarte,
-                  usb, extperiph2, extperiph1, i2c3, vi0, i2c5, uarta, uartd,
-                  i2c1, i2s4, i2s6, aud, spi5, touch, uartj, rsvd1, wdt, tsc,
-                  dmic3, led, vi0_alt, i2s5, nv, extperiph3, extperiph4, spi4,
-                  ccla, i2s1, i2s2, i2s3, i2s8, rsvd2, dmic5, dca, displayb,
-                  displaya, vi1, dcb, dmic1, dmic4, i2s7, dmic2, dspk0, rsvd3,
-                  tsc_alt, istctrl, vi1_alt, dspk1, igpu ]
-
-        # out of the common properties, only these are allowed for Tegra234
-        nvidia,pins: true
-        nvidia,pull: true
-        nvidia,tristate: true
-        nvidia,schmitt: true
-        nvidia,enable-input: true
-        nvidia,open-drain: true
-        nvidia,lock: true
-        nvidia,drive-type: true
-        nvidia,io-hv: true
-
-      required:
-        - nvidia,pins
+  # out of the common properties, only these are allowed for Tegra234
+  nvidia,pins: true
+  nvidia,pull: true
+  nvidia,tristate: true
+  nvidia,schmitt: true
+  nvidia,enable-input: true
+  nvidia,open-drain: true
+  nvidia,lock: true
+  nvidia,drive-type: true
+  nvidia,io-hv: true
 
 required:
-  - compatible
-  - reg
+  - nvidia,pins
 
-additionalProperties: true
+# We would typically use unevaluatedProperties here but that has the
+# downside that all the properties in the common bindings become valid
+# for all chip generations. In this case, however, we want the per-SoC
+# bindings to be able to override which of the common properties are
+# allowed, since not all pinmux generations support the same sets of
+# properties. This way, the common bindings define the format of the
+# properties but the per-SoC bindings define which of them apply to a
+# given chip.
+additionalProperties: false
+
 ...

Documentation/devicetree/bindings/pinctrl/nvidia,tegra234-pinmux.yaml

···
   - Thierry Reding <[e-mail]>
   - Jon Hunter <[e-mail]>
 
-$ref: nvidia,tegra234-pinmux-common.yaml
-
 properties:
   compatible:
     const: nvidia,tegra234-pinmux
+
+  reg:
+    maxItems: 1
 
 patternProperties:
   "^pinmux(-[a-z0-9-]+)?$":
···
 
     # pin groups
     additionalProperties:
+      $ref: nvidia,tegra234-pinmux-common.yaml
+
       properties:
         nvidia,pins:
           items: