dt-bindings: Remove cases of 'allOf' containing a '$ref'

json-schema versions draft7 and earlier have a weird behavior in that
any keywords combined with a '$ref' are ignored (silently). The correct
form was to put a '$ref' under an 'allOf'. This behavior is now changed
in the 2019-09 json-schema spec and '$ref' can be mixed with other
keywords. The json-schema library doesn't yet support this, but the
tooling now does a fixup for this and either way works.

This has been a constant source of review comments, so let's change this
treewide so everyone copies the simpler syntax.

Scripted with ruamel.yaml with some manual fixups. Some minor whitespace
changes from the script.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Lee Jones <lee.jones@linaro.org>
Acked-By: Vinod Koul <vkoul@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Wolfram Sang <wsa@the-dreams.de> # for I2C
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> #for-iio
Reviewed-by: Stephen Boyd <sboyd@kernel.org> # clock
Signed-off-by: Rob Herring <robh@kernel.org>

1 files changed, 15 insertions, 20 deletions

diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml
index 933ba37944d7..c8b39f940984 100644
--- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml
+++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.yaml
@@ -76,8 +76,7 @@ properties:
     description:
       Phandle to system configuration controller. It can be used to control the
       analog circuitry on stm32mp1.
-    allOf:
-      - $ref: "/schemas/types.yaml#/definitions/phandle-array"
+    $ref: "/schemas/types.yaml#/definitions/phandle-array"
 
   interrupt-controller: true
 
@@ -247,8 +246,7 @@ patternProperties:
           Resolution (bits) to use for conversions:
             - can be 6, 8, 10 or 12 on stm32f4
             - can be 8, 10, 12, 14 or 16 on stm32h7 and stm32mp1
-        allOf:
-          - $ref: /schemas/types.yaml#/definitions/uint32
+        $ref: /schemas/types.yaml#/definitions/uint32
 
       st,adc-channels:
         description: |
@@ -256,8 +254,7 @@ patternProperties:
             - 16 channels, numbered from 0 to 15 (for in0..in15) on stm32f4
             - 20 channels, numbered from 0 to 19 (for in0..in19) on stm32h7 and
               stm32mp1.
-        allOf:
-          - $ref: /schemas/types.yaml#/definitions/uint32-array
+        $ref: /schemas/types.yaml#/definitions/uint32-array
 
       st,adc-diff-channels:
         description: |
@@ -270,18 +267,17 @@ patternProperties:
           required. Both properties can be used together. Some channels can be
           used as single-ended and some other ones as differential (mixed). But
           channels can't be configured both as single-ended and differential.
-        allOf:
-          - $ref: /schemas/types.yaml#/definitions/uint32-matrix
-          - items:
-              items:
-                - description: |
-                    "vinp" indicates positive input number
-                  minimum: 0
-                  maximum: 19
-                - description: |
-                    "vinn" indicates negative input number
-                  minimum: 0
-                  maximum: 19
+        $ref: /schemas/types.yaml#/definitions/uint32-matrix
+        items:
+          items:
+            - description: |
+                "vinp" indicates positive input number
+              minimum: 0
+              maximum: 19
+            - description: |
+                "vinn" indicates negative input number
+              minimum: 0
+              maximum: 19
 
       st,min-sample-time-nsecs:
         description:
@@ -291,8 +287,7 @@ patternProperties:
           array that matches "st,adc-channels" and/or "st,adc-diff-channels"
           list, to set sample time resp. for all channels, or independently for
           each channel.
-        allOf:
-          - $ref: /schemas/types.yaml#/definitions/uint32-array
+        $ref: /schemas/types.yaml#/definitions/uint32-array
 
     allOf:
       - if: