linux-kernel - [PATCH 01/10] dt-bindings: display: Separate clock item lists by compatible

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Message-Id: <20220411043423.37333-2-samuel@sholland.org>
Date:   Sun, 10 Apr 2022 23:34:13 -0500
From:   Samuel Holland <samuel@...lland.org>
To:     Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>,
        Maxime Ripard <mripard@...nel.org>
Cc:     Samuel Holland <samuel@...lland.org>,
        Daniel Vetter <daniel@...ll.ch>,
        David Airlie <airlied@...ux.ie>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...ts.linux.dev
Subject: [PATCH 01/10] dt-bindings: display: Separate clock item lists by compatible

So far, the binding and driver have relied on the fact that the H6
clocks are both a prefix and a subset of the R40 clocks. This allows
them to share the clocks/clock-names items and the clock-output-names
order between the hardware variants.

However, the D1 hardware has TCON TV0 and DSI, but no TCON TV1. This
cannot be supported by the existing scheme because it puts a gap in the
middle of the item lists. To prepare for adding D1 support, use separate
lists for variants with different combinations of clocks.

Signed-off-by: Samuel Holland <samuel@...lland.org>
---

 .../display/allwinner,sun8i-r40-tcon-top.yaml | 111 +++++++++++-------
 1 file changed, 67 insertions(+), 44 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/allwinner,sun8i-r40-tcon-top.yaml b/Documentation/devicetree/bindings/display/allwinner,sun8i-r40-tcon-top.yaml
index 61ef7b337218..784b267635fb 100644
--- a/Documentation/devicetree/bindings/display/allwinner,sun8i-r40-tcon-top.yaml
+++ b/Documentation/devicetree/bindings/display/allwinner,sun8i-r40-tcon-top.yaml
@@ -48,31 +48,15 @@ properties:
 
   clocks:
     minItems: 2
-    items:
-      - description: The TCON TOP interface clock
-      - description: The TCON TOP TV0 clock
-      - description: The TCON TOP TVE0 clock
-      - description: The TCON TOP TV1 clock
-      - description: The TCON TOP TVE1 clock
-      - description: The TCON TOP MIPI DSI clock
+    maxItems: 6
 
   clock-names:
     minItems: 2
-    items:
-      - const: bus
-      - const: tcon-tv0
-      - const: tve0
-      - const: tcon-tv1
-      - const: tve1
-      - const: dsi
+    maxItems: 6
 
   clock-output-names:
     minItems: 1
     maxItems: 3
-    description: >
-      The first item is the name of the clock created for the TV0
-      channel, the second item is the name of the TCON TV1 channel
-      clock and the third one is the name of the DSI channel clock.
 
   resets:
     maxItems: 1
@@ -129,32 +113,71 @@ required:
 
 additionalProperties: false
 
-if:
-  properties:
-    compatible:
-      contains:
-        const: allwinner,sun50i-h6-tcon-top
-
-then:
-  properties:
-    clocks:
-      maxItems: 2
-
-    clock-output-names:
-      maxItems: 1
-
-else:
-  properties:
-    clocks:
-      minItems: 6
-
-    clock-output-names:
-      minItems: 3
-
-    ports:
-      required:
-        - port@2
-        - port@3
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: allwinner,sun8i-r40-tcon-top
+
+    then:
+      properties:
+        clocks:
+          minItems: 6
+          items:
+            - description: The TCON TOP interface clock
+            - description: The TCON TOP TV0 clock
+            - description: The TCON TOP TVE0 clock
+            - description: The TCON TOP TV1 clock
+            - description: The TCON TOP TVE1 clock
+            - description: The TCON TOP MIPI DSI clock
+
+        clock-names:
+          minItems: 6
+          items:
+            - const: bus
+            - const: tcon-tv0
+            - const: tve0
+            - const: tcon-tv1
+            - const: tve1
+            - const: dsi
+
+        clock-output-names:
+          minItems: 3
+          items:
+            - description: TCON TV0 output clock name
+            - description: TCON TV1 output clock name
+            - description: DSI output clock name
+
+        ports:
+          required:
+            - port@2
+            - port@3
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: allwinner,sun50i-h6-tcon-top
+
+    then:
+      properties:
+        clocks:
+          maxItems: 2
+          items:
+            - description: The TCON TOP interface clock
+            - description: The TCON TOP TV0 clock
+
+        clock-names:
+          maxItems: 2
+          items:
+            - const: bus
+            - const: tcon-tv0
+
+        clock-output-names:
+          maxItems: 1
+          items:
+            - description: TCON TV0 output clock name
 
 examples:
   - |
-- 
2.35.1