Thread (15 messages) 15 messages, 5 authors, 2026-01-20

Re: [PATCH 1/5] dt-bindings: display: rockchip: Add rk3576 DisplayPort

From: Rob Herring <robh@kernel.org>
Date: 2026-01-15 17:18:06
Also in: dri-devel, linux-devicetree, linux-rockchip, lkml

On Tue, Jan 13, 2026 at 10:33:52PM +0100, Sebastian Reichel wrote:
Hi,

On Fri, Jan 09, 2026 at 04:00:44PM +0800, Andy Yan wrote:
quoted
From: Andy Yan <andy.yan@rock-chips.com>

The DisplayPort found on RK3576 is very similar to that of RK3588,
but work in dual pixel mode. And itself does not depend on the I2S
clock or the SPDIF clock when transmit audio.

Signed-off-by: Andy Yan <andy.yan@rock-chips.com>

---

 .../display/rockchip/rockchip,dw-dp.yaml      | 29 +++++++++++++++++--
 1 file changed, 26 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-dp.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-dp.yaml
index 6345f0132d43..1bfe1bd6404a 100644
--- a/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-dp.yaml
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-dp.yaml
@@ -27,13 +27,11 @@ description: |
   * Pixel clock up to 594MHz
   * I2S, SPDIF audio interface
 
-allOf:
-  - $ref: /schemas/sound/dai-common.yaml#
-
 properties:
   compatible:
     enum:
       - rockchip,rk3588-dp
+      - rockchip,rk3576-dp
 
   reg:
     maxItems: 1
@@ -42,6 +40,7 @@ properties:
     maxItems: 1
 
   clocks:
+    minItems: 3
     items:
       - description: Peripheral/APB bus clock
       - description: DisplayPort AUX clock
@@ -50,6 +49,7 @@ properties:
       - description: SPDIF interfce clock
 
   clock-names:
+    minItems: 3
     items:
       - const: apb
       - const: aux
@@ -95,6 +95,29 @@ required:
   - ports
   - resets
 
+allOf:
+  - $ref: /schemas/sound/dai-common.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - rockchip,rk3588-dp
+    then:
+      properties:
+        clocks:
+          minItems: 5
+          maxItems: 5
+        clock-names:
+          minItems: 5
+          maxItems: 5
I think maxItems is not needed, since 6 items would not work for the
specified items list anyways. Otherwise:
Correct.

Rob
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