Re: [RFC v2 2/8] dt-bindings: display: add ingenic-jz4780-hdmi DT Schema

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Hi Nikolaus,


Le ven., févr. 28, 2020 at 19:19, H. Nikolaus Schaller <hns@xxxxxxxxxxxxx> a écrit :
From: Sam Ravnborg <sam@xxxxxxxxxxxx>

Add DT bindings for the hdmi driver for the Ingenic JZ4780 SoC.
Based on .txt binding from Zubair Lutfullah Kakakhel

Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Cc: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@xxxxxxxxxx>
Cc: H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>
Cc: Rob Herring <robh@xxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
---
.../bindings/display/ingenic-jz4780-hdmi.yaml | 83 +++++++++++++++++++
 1 file changed, 83 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/ingenic-jz4780-hdmi.yaml

diff --git a/Documentation/devicetree/bindings/display/ingenic-jz4780-hdmi.yaml b/Documentation/devicetree/bindings/display/ingenic-jz4780-hdmi.yaml
new file mode 100644
index 000000000000..9b71c427bd69
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/ingenic-jz4780-hdmi.yaml
@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/ingenic-jz4780-hdmi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Bindings for Ingenic JZ4780 HDMI Transmitter
+
+maintainers:
+  - Zubair Lutfullah Kakakhel <Zubair.Kakakhel@xxxxxxxxxx>
+  - H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>

Did Zubair write this glue driver? He's been MIA for a while, doesn't work at ImgTec anymore, and this email doesn't work.

+
+description: |
+ The HDMI Transmitter in the Ingenic JZ4780 is a Synopsys DesignWare HDMI 1.4
+  TX controller IP with accompanying PHY IP.
+
+allOf:
+  - $ref: panel/panel-common.yaml#
+
+properties:
+  compatible:
+    items:
+      - const: ingenic,jz4780-hdmi
+
+  reg:
+    maxItems: 1
+    description: the address & size of the LCD controller registers

Remove the description here,

+
+  reg-io-width:
+    const: 4
+
+  interrupts:
+    maxItems: 1
+    description: Specifies the interrupt provided by parent

and here.

The rule is that if there is only one "reg", "interrupts" or "clocks" entry then a description is not needed as it's pretty obvious what it's for.

+
+  clocks:
+    maxItems: 2
+    description: Clock specifiers for isrf and iahb clocks

You need two 'description:' like this:

clocks:
 items:
   - description: ISRF clock
   - description: IAHB clock

Cheers,
-Paul

+
+  clock-names:
+    items:
+      - const: isfr
+      - const: iahb
+
+  ddc-i2c-bus: true
+  ports: true
+
+required:
+    - compatible
+    - clocks
+    - clock-names
+    - ports
+    - reg-io-width
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/jz4780-cgu.h>
+
+    hdmi: hdmi@10180000 {
+        compatible = "ingenic,jz4780-hdmi";
+        reg = <0x10180000 0x8000>;
+        reg-io-width = <4>;
+        ddc-i2c-bus = <&i2c4>;
+        interrupt-parent = <&intc>;
+        interrupts = <3>;
+        clocks = <&cgu JZ4780_CLK_HDMI>, <&cgu JZ4780_CLK_AHB0>;
+        clock-names = "isfr", "iahb";
+
+        ports {
+            hdmi_in: port {
+                #address-cells = <1>;
+                #size-cells = <0>;
+                hdmi_in_lcd: endpoint@0 {
+                    reg = <0>;
+                    remote-endpoint = <&jz4780_out_hdmi>;
+                };
+            };
+        };
+    };
+
+...
--
2.23.0



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