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 <lars@metafoo.de>
Cc: Michael Hennerich <Michael.Hennerich@analog.com>
Cc: Jonathan Cameron <jic23@kernel.org>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Olivier Moysan <olivier.moysan@foss.st.com>
Cc: Arnaud Pouliquen <arnaud.pouliquen@foss.st.com>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Georgi Djakov <djakov@kernel.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Dmitry Osipenko <digetx@gmail.com>
Cc: linux-iio@vger.kernel.org
Cc: alsa-devel@alsa-project.org
Cc: linux-mmc@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-phy@lists.infradead.org
Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220330145741.3044896-1-robh@kernel.org

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

@@ -98,6 +98,7 @@ allOf:
               - ti,adc121s
               - ti,ads7866
               - ti,ads7868
+    then:
       required:
         - vcc-supply
   # Devices with a vref

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

@@ -174,7 +174,7 @@ patternProperties:
               contains:
                 const: st,stm32-dfsdm-adc
 
-      - then:
+        then:
           properties:
             st,adc-channels:
               minItems: 1
@@ -206,7 +206,7 @@ patternProperties:
               contains:
                 const: st,stm32-dfsdm-dmic
 
-      - then:
+        then:
           properties:
             st,adc-channels:
               maxItems: 1
@@ -254,7 +254,7 @@ allOf:
           contains:
             const: st,stm32h7-dfsdm
 
-  - then:
+    then:
       patternProperties:
         "^filter@[0-9]+$":
           properties:
@@ -269,7 +269,7 @@ allOf:
           contains:
             const: st,stm32mp1-dfsdm
 
-  - then:
+    then:
       patternProperties:
         "^filter@[0-9]+$":
           properties:

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

@@ -197,6 +197,8 @@ allOf:
               - nvidia,tegra30-sdhci
               - nvidia,tegra114-sdhci
               - nvidia,tegra124-sdhci
+    then:
+      properties:
         clocks:
           items:
             - description: module clock

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

@@ -56,6 +56,7 @@ if:
     compatible:
       contains:
         const: ti,davinci_mdio
+then:
   required:
     - bus_freq
 

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

@@ -14,7 +14,7 @@ if:
     compatible:
       contains:
         const: qcom,usb-hs-phy-apq8064
-  then:
+then:
   properties:
     resets:
       maxItems: 1
@@ -22,7 +22,7 @@ if:
     reset-names:
       const: por
 
-  else:
+else:
   properties:
     resets:
       minItems: 2
@@ -92,6 +92,8 @@ additionalProperties: false
 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

@@ -18,20 +18,20 @@ description:
 
 allOf:
   - $ref: "regulator.yaml#"
-
-if:
+  - if:
       properties:
         compatible:
           contains:
             const: regulator-fixed-clock
+    then:
       required:
         - clocks
-else:
-  if:
+  - if:
       properties:
         compatible:
           contains:
             const: regulator-fixed-domain
+    then:
       required:
         - power-domains
         - required-opps

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

@@ -136,8 +136,7 @@ allOf:
         compatible:
           contains:
             const: st,stm32f4-sai
-
-  - then:
+    then:
       properties:
         clocks:
           items:
@@ -148,8 +147,7 @@ allOf:
           items:
             - const: x8k
             - const: x11k
-
-  - else:
+    else:
       properties:
         clocks:
           items:

Documentation/devicetree/bindings/sram/sram.yaml

@@ -136,14 +136,14 @@ required:
   - reg
 
 if:
+  not:
     properties:
       compatible:
         contains:
           enum:
             - qcom,rpm-msg-ram
             - rockchip,rk3288-pmu-sram
-
-else:
+then:
   required:
     - "#address-cells"
     - "#size-cells"