dt-bindings: Fix incomplete if/then/else schemas

A recent review highlighted that the json-schema meta-schema allows any
combination of if/then/else schema keywords even though if, then or else
by themselves makes little sense. With an added meta-schema to only
allow valid combinations, there's a handful of schemas found which need
fixing in a variety of ways. Incorrect indentation is the most common
issue.

Cc: Lars-Peter Clausen <[e-mail]>
Cc: Michael Hennerich <[e-mail]>
Cc: Jonathan Cameron <[e-mail]>
Cc: Krzysztof Kozlowski <[e-mail]>
Cc: Olivier Moysan <[e-mail]>
Cc: Arnaud Pouliquen <[e-mail]>
Cc: Bjorn Andersson <[e-mail]>
Cc: Georgi Djakov <[e-mail]>
Cc: Ulf Hansson <[e-mail]>
Cc: Thierry Reding <[e-mail]>
Cc: Jonathan Hunter <[e-mail]>
Cc: "David S. Miller" <[e-mail]>
Cc: Jakub Kicinski <[e-mail]>
Cc: Paolo Abeni <[e-mail]>
Cc: Kishon Vijay Abraham I <[e-mail]>
Cc: Vinod Koul <[e-mail]>
Cc: Mark Brown <[e-mail]>
Cc: Fabrice Gasnier <[e-mail]>
Cc: Grygorii Strashko <[e-mail]>
Cc: Dmitry Osipenko <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
Signed-off-by: Rob Herring <[e-mail]>
Acked-by: Jakub Kicinski <[e-mail]>
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Acked-by: Mark Brown <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/devicetree/bindings/iio/adc/adi,ad7476.yaml

···
               - ti,adc121s
               - ti,ads7866
               - ti,ads7868
+    then:
       required:
         - vcc-supply
   # Devices with a vref

Documentation/devicetree/bindings/iio/adc/st,stm32-dfsdm-adc.yaml

···
               contains:
                 const: st,stm32-dfsdm-adc
 
-      - then:
+        then:
           properties:
             st,adc-channels:
               minItems: 1
···
               contains:
                 const: st,stm32-dfsdm-dmic
 
-      - then:
+        then:
           properties:
             st,adc-channels:
               maxItems: 1
···
           contains:
             const: st,stm32h7-dfsdm
 
-  - then:
+    then:
       patternProperties:
         "^filter@[0-9]+$":
           properties:
···
           contains:
             const: st,stm32mp1-dfsdm
 
-  - then:
+    then:
       patternProperties:
         "^filter@[0-9]+$":
           properties:

Documentation/devicetree/bindings/iio/dac/adi,ad5360.yaml

···
           contains:
             enum:
               - adi,ad5371
-      then:
-        required:
-          - vref2-supply
+    then:
+      required:
+        - vref2-supply
 
 examples:
   - |

Documentation/devicetree/bindings/interconnect/qcom,rpm.yaml

···
               - qcom,sdm660-gnoc
               - qcom,sdm660-snoc
 
-      then:
-        properties:
-          clock-names:
-            items:
-              - const: bus
-              - const: bus_a
+    then:
+      properties:
+        clock-names:
+          items:
+            - const: bus
+            - const: bus_a
 
-          clocks:
-            items:
-              - description: Bus Clock
-              - description: Bus A Clock
+        clocks:
+          items:
+            - description: Bus Clock
+            - description: Bus A Clock
 
-        # Child node's properties
-        patternProperties:
-          '^interconnect-[a-z0-9]+$':
-            type: object
-            description:
-              snoc-mm is a child of snoc, sharing snoc's register address space.
+      # Child node's properties
+      patternProperties:
+        '^interconnect-[a-z0-9]+$':
+          type: object
+          description:
+            snoc-mm is a child of snoc, sharing snoc's register address space.
 
-            properties:
-              compatible:
-                enum:
-                  - qcom,msm8939-snoc-mm
+          properties:
+            compatible:
+              enum:
+                - qcom,msm8939-snoc-mm
 
-              '#interconnect-cells':
-                const: 1
+            '#interconnect-cells':
+              const: 1
 
-              clock-names:
-                items:
-                  - const: bus
-                  - const: bus_a
+            clock-names:
+              items:
+                - const: bus
+                - const: bus_a
 
-              clocks:
-                items:
-                  - description: Bus Clock
-                  - description: Bus A Clock
+            clocks:
+              items:
+                - description: Bus Clock
+                - description: Bus A Clock
 
-            required:
-              - compatible
-              - '#interconnect-cells'
-              - clock-names
-              - clocks
+          required:
+            - compatible
+            - '#interconnect-cells'
+            - clock-names
+            - clocks
 
   - if:
       properties:

Documentation/devicetree/bindings/mmc/nvidia,tegra20-sdhci.yaml

···
               - nvidia,tegra30-sdhci
               - nvidia,tegra114-sdhci
               - nvidia,tegra124-sdhci
+    then:
+      properties:
         clocks:
           items:
             - description: module clock

Documentation/devicetree/bindings/net/ti,davinci-mdio.yaml

···
     compatible:
       contains:
         const: ti,davinci_mdio
+then:
   required:
     - bus_freq
 

Documentation/devicetree/bindings/phy/nvidia,tegra20-usb-phy.yaml

···
           - nvidia,hssquelch-level
           - nvidia,hsdiscon-level
 
-        else:
-          properties:
-            clocks:
-              maxItems: 4
+      else:
+        properties:
+          clocks:
+            maxItems: 4
 
-            clock-names:
-              items:
-                - const: reg
-                - const: pll_u
-                - const: timer
-                - const: utmi-pads
+          clock-names:
+            items:
+              - const: reg
+              - const: pll_u
+              - const: timer
+              - const: utmi-pads
 
   - if:
       properties:

Documentation/devicetree/bindings/phy/qcom,usb-hs-phy.yaml

···
     compatible:
       contains:
         const: qcom,usb-hs-phy-apq8064
-  then:
-    properties:
-      resets:
-        maxItems: 1
+then:
+  properties:
+    resets:
+      maxItems: 1
 
-      reset-names:
-        const: por
+    reset-names:
+      const: por
 
-  else:
-    properties:
-      resets:
-        minItems: 2
-        maxItems: 2
+else:
+  properties:
+    resets:
+      minItems: 2
+      maxItems: 2
 
-      reset-names:
-        items:
-          - const: phy
-          - const: por
+    reset-names:
+      items:
+        - const: phy
+        - const: por
 
 properties:
   compatible:
···
 examples:
   - |
     otg: usb-controller {
+      #reset-cells = <1>;
+
       ulpi {
         phy {
           compatible = "qcom,usb-hs-phy-msm8974", "qcom,usb-hs-phy";

Documentation/devicetree/bindings/regulator/fixed-regulator.yaml

···
 
 allOf:
   - $ref: "regulator.yaml#"
-
-if:
-  properties:
-    compatible:
-      contains:
-        const: regulator-fixed-clock
-  required:
-    - clocks
-else:
-  if:
-    properties:
-      compatible:
-        contains:
-          const: regulator-fixed-domain
-    required:
-      - power-domains
-      - required-opps
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: regulator-fixed-clock
+    then:
+      required:
+        - clocks
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: regulator-fixed-domain
+    then:
+      required:
+        - power-domains
+        - required-opps
 
 properties:
   compatible:

Documentation/devicetree/bindings/sound/st,stm32-sai.yaml

···
         compatible:
           contains:
             const: st,stm32f4-sai
-
-  - then:
+    then:
       properties:
         clocks:
           items:
···
           items:
             - const: x8k
             - const: x11k
-
-  - else:
+    else:
       properties:
         clocks:
           items:

Documentation/devicetree/bindings/sram/sram.yaml

···
   - reg
 
 if:
-  properties:
-    compatible:
-      contains:
-        enum:
-          - qcom,rpm-msg-ram
-          - rockchip,rk3288-pmu-sram
-
-else:
+  not:
+    properties:
+      compatible:
+        contains:
+          enum:
+            - qcom,rpm-msg-ram
+            - rockchip,rk3288-pmu-sram
+then:
   required:
     - "#address-cells"
     - "#size-cells"