dt-bindings: arm: tegra: pmc: Restructure pad configuration node schema

The pad configuration node schema in its current form can accidentally
match other properties as well. Restructure the schema to better match
how the device trees are using these.

Reviewed-by: Rob Herring <[email protected]>
Signed-off-by: Thierry Reding <[email protected]>

Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.yaml

@@ -244,69 +244,76 @@ properties:
           - resets
           - '#power-domain-cells'
 
-patternProperties:
-  "^[a-f0-9]+-[a-f0-9]+$":
+  pinmux:
     type: object
-    description:
-      This is a Pad configuration node. On Tegra SOCs a pad is a set of
-      pins which are configured as a group. The pin grouping is a fixed
-      attribute of the hardware. The PMC can be used to set pad power state
-      and signaling voltage. A pad can be either in active or power down mode.
-      The support for power state and signaling voltage configuration varies
-      depending on the pad in question. 3.3V and 1.8V signaling voltages
-      are supported on pins where software controllable signaling voltage
-      switching is available.
-
-      The pad configuration state nodes are placed under the pmc node and they
-      are referred to by the pinctrl client properties. For more information
-      see Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt.
-      The pad name should be used as the value of the pins property in pin
-      configuration nodes.
-
-      The following pads are present on Tegra124 and Tegra132
-      audio, bb, cam, comp, csia, csb, cse, dsi, dsib, dsic, dsid, hdmi, hsic,
-      hv, lvds, mipi-bias, nand, pex-bias, pex-clk1, pex-clk2, pex-cntrl,
-      sdmmc1, sdmmc3, sdmmc4, sys_ddc, uart, usb0, usb1, usb2, usb_bias.
-
-      The following pads are present on Tegra210
-      audio, audio-hv, cam, csia, csib, csic, csid, csie, csif, dbg,
-      debug-nonao, dmic, dp, dsi, dsib, dsic, dsid, emmc, emmc2, gpio, hdmi,
-      hsic, lvds, mipi-bias, pex-bias, pex-clk1, pex-clk2, pex-cntrl, sdmmc1,
-      sdmmc3, spi, spi-hv, uart, usb0, usb1, usb2, usb3, usb-bias.
-
-    properties:
-      pins:
-        $ref: /schemas/types.yaml#/definitions/string
-        description: Must contain name of the pad(s) to be configured.
-
-      low-power-enable:
-        $ref: /schemas/types.yaml#/definitions/flag
-        description: Configure the pad into power down mode.
-
-      low-power-disable:
-        $ref: /schemas/types.yaml#/definitions/flag
-        description: Configure the pad into active mode.
-
-      power-source:
-        $ref: /schemas/types.yaml#/definitions/uint32
-        description:
-          Must contain either TEGRA_IO_PAD_VOLTAGE_1V8 or
-          TEGRA_IO_PAD_VOLTAGE_3V3 to select between signaling voltages.
-          The values are defined in
-          include/dt-bindings/pinctrl/pinctrl-tegra-io-pad.h.
-          Power state can be configured on all Tegra124 and Tegra132
-          pads. None of the Tegra124 or Tegra132 pads support signaling
-          voltage switching.
-          All of the listed Tegra210 pads except pex-cntrl support power
-          state configuration. Signaling voltage switching is supported
-          on below Tegra210 pads.
-          audio, audio-hv, cam, dbg, dmic, gpio, pex-cntrl, sdmmc1,
-          sdmmc3, spi, spi-hv, and uart.
-
-    required:
-      - pins
-
-    additionalProperties: false
+    additionalProperties:
+      type: object
+      description: |
+        This is a pad configuration node. On Tegra SoCs a pad is a set of pins
+        which are configured as a group. The pin grouping is a fixed attribute
+        of the hardware. The PMC can be used to set pad power state and
+        signaling voltage. A pad can be either in active or power down mode.
+        The support for power state and signaling voltage configuration varies
+        depending on the pad in question. 3.3V and 1.8V signaling voltages are
+        supported on pins where software controllable signaling voltage
+        switching is available.
+
+        The pad configuration state nodes are placed under the pmc node and
+        they are referred to by the pinctrl client properties. For more
+        information see:
+
+          Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
+
+        The pad name should be used as the value of the pins property in pin
+        configuration nodes.
+
+        The following pads are present on Tegra124 and Tegra132:
+
+          audio, bb, cam, comp, csia, csb, cse, dsi, dsib, dsic, dsid, hdmi,
+          hsic, hv, lvds, mipi-bias, nand, pex-bias, pex-clk1, pex-clk2,
+          pex-cntrl, sdmmc1, sdmmc3, sdmmc4, sys_ddc, uart, usb0, usb1, usb2,
+          usb_bias
+
+        The following pads are present on Tegra210:
+
+          audio, audio-hv, cam, csia, csib, csic, csid, csie, csif, dbg,
+          debug-nonao, dmic, dp, dsi, dsib, dsic, dsid, emmc, emmc2, gpio,
+          hdmi, hsic, lvds, mipi-bias, pex-bias, pex-clk1, pex-clk2, pex-cntrl,
+          sdmmc1, sdmmc3, spi, spi-hv, uart, usb0, usb1, usb2, usb3, usb-bias
+      additionalProperties: false
+      properties:
+        pins:
+          $ref: /schemas/types.yaml#/definitions/string-array
+          description: Must contain name of the pad(s) to be configured.
+
+        low-power-enable:
+          $ref: /schemas/types.yaml#/definitions/flag
+          description: Configure the pad into power down mode.
+
+        low-power-disable:
+          $ref: /schemas/types.yaml#/definitions/flag
+          description: Configure the pad into active mode.
+
+        power-source:
+          $ref: /schemas/types.yaml#/definitions/uint32
+          description: |
+            Must contain either TEGRA_IO_PAD_VOLTAGE_1V8 or
+            TEGRA_IO_PAD_VOLTAGE_3V3 to select between signaling voltages. The
+            values are defined in:
+
+              include/dt-bindings/pinctrl/pinctrl-tegra-io-pad.h
+
+            Power state can be configured on all Tegra124 and Tegra132 pads.
+            None of the Tegra124 or Tegra132 pads support signaling voltage
+            switching. All of the listed Tegra210 pads except pex-cntrl support
+            power state configuration. Signaling voltage switching is supported
+            on the following Tegra210 pads:
+
+              audio, audio-hv, cam, dbg, dmic, gpio, pex-cntrl, sdmmc1, sdmmc3,
+              spi, spi-hv, uart
+
+      required:
+        - pins
 
 required:
   - compatible
@@ -315,6 +322,46 @@ required:
   - clocks
   - '#clock-cells'
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: nvidia,tegra124-pmc
+    then:
+      properties:
+        pinmux:
+          additionalProperties:
+            type: object
+            properties:
+              pins:
+                items:
+                  enum: [ audio, bb, cam, comp, csia, csb, cse, dsi, dsib,
+                          dsic, dsid, hdmi, hsic, hv, lvds, mipi-bias, nand,
+                          pex-bias, pex-clk1, pex-clk2, pex-cntrl, sdmmc1,
+                          sdmmc3, sdmmc4, sys_ddc, uart, usb0, usb1, usb2,
+                          usb_bias ]
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: nvidia,tegra210-pmc
+    then:
+      properties:
+        pinmux:
+          additionalProperties:
+            type: object
+            properties:
+              pins:
+                items:
+                  enum: [ audio, audio-hv, cam, csia, csib, csic, csid, csie,
+                          csif, dbg, debug-nonao, dmic, dp, dsi, dsib, dsic,
+                          dsid, emmc, emmc2, gpio, hdmi, hsic, lvds, mipi-bias,
+                          pex-bias, pex-clk1, pex-clk2, pex-cntrl, sdmmc1,
+                          sdmmc3, spi, spi-hv, uart, usb0, usb1, usb2, usb3,
+                          usb-bias ]
+
 additionalProperties: false
 
 dependencies: