Re: [PATCH v2 08/12] dt-bindings: display: vop2: Add rk3588 support

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Hi Krzysztof:


On 11/23/23 03:07, Krzysztof Kozlowski wrote:
On 22/11/2023 13:55, Andy Yan wrote:
From: Andy Yan <andy.yan@xxxxxxxxxxxxxx>

The vop2 on rk3588 is similar to which on rk356x
but with 4 video ports and need to reference
more grf modules.

Signed-off-by: Andy Yan <andy.yan@xxxxxxxxxxxxxx>

---

Changes in v2:
- fix errors when running 'make DT_CHECKER_FLAGS=-m dt_binding_check'

  .../display/rockchip/rockchip-vop2.yaml       | 27 +++++++++++++++++++
  1 file changed, 27 insertions(+)

diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip-vop2.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip-vop2.yaml
index b60b90472d42..24148d9b3b14 100644
--- a/Documentation/devicetree/bindings/display/rockchip/rockchip-vop2.yaml
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip-vop2.yaml
@@ -20,6 +20,7 @@ properties:
      enum:
        - rockchip,rk3566-vop
        - rockchip,rk3568-vop
+      - rockchip,rk3588-vop
reg:
      items:
@@ -42,26 +43,47 @@ properties:
        frame start (VSYNC), line flag and other status interrupts.
clocks:
+    minItems: 3
      items:
        - description: Clock for ddr buffer transfer.
        - description: Clock for the ahb bus to R/W the phy regs.
        - description: Pixel clock for video port 0.
        - description: Pixel clock for video port 1.
        - description: Pixel clock for video port 2.
+      - description: Pixel clock for video port 4.
+      - description: Peripheral clock for vop on rk3588.
clock-names:
+    minItems: 3

You relax requirements for all existing variants here which is not
explained in commit msg. I assume this was not intentional, so you need
to re-constrain them in allOf:if:then.

See for example:
https://elixir.bootlin.com/linux/v5.19-rc6/source/Documentation/devicetree/bindings/clock/samsung,exynos7-clock.yaml#L57
for some ideas.

      items:
        - const: aclk
        - const: hclk
        - const: dclk_vp0
        - const: dclk_vp1
        - const: dclk_vp2
+      - const: dclk_vp3
+      - const: pclk_vop
rockchip,grf:
      $ref: /schemas/types.yaml#/definitions/phandle
      description:
        Phandle to GRF regs used for misc control
+ rockchip,vo-grf:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to VO GRF regs used for misc control, required for rk3588

Drop last sentence, instead add it to required in allOf:if:then.

Is this valid for other variants? If not, should be disallowed in
allOf:if:then: for them.

Only valid for rk3588 now.


+
+  rockchip,vop-grf:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to VOP GRF regs used for misc control, required for rk3588
+
+  rockchip,pmu:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to PMU regs used for misc control, required for rk3588

For all these three: what is "misc control"? Way too vague. Everything
is a misc and everything can be control. You must be here specific and
much more descriptive.

improve in v3


+
    ports:
      $ref: /schemas/graph.yaml#/properties/ports
@@ -81,6 +103,11 @@ properties:
          description:
            Output endpoint of VP2
+ port@3:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          Output endpoint of VP3

Valid for other variants?


Only valid for rk3588 now.

Thanks for your review and guidance, I try to fix in v3 [0]

[0]https://patchwork.kernel.org/project/linux-rockchip/patch/20231130122418.13258-1-andyshrk@xxxxxxx/
Best regards,
Krzysztof




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