diff mbox series

[v2,09/11] dt-bindings: display: convert Arm HDLCD to DT schema

Message ID 20220506140533.3566431-10-andre.przywara@arm.com
State Accepted
Commit 36fd2a65bcafb7cc3014d06c7b1335eb746e09c8
Headers show
Series dt-bindings: Convert Arm Ltd. peripherals to DT schema | expand

Commit Message

Andre Przywara May 6, 2022, 2:05 p.m. UTC
The Arm HDLCD is a display controller that scans out a framebuffer and
hands a signal to a digital encoder to generate a DVI or HDMI signal.

Convert the existing DT binding to DT schema.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 .../devicetree/bindings/display/arm,hdlcd.txt | 79 ----------------
 .../bindings/display/arm,hdlcd.yaml           | 89 +++++++++++++++++++
 2 files changed, 89 insertions(+), 79 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/display/arm,hdlcd.txt
 create mode 100644 Documentation/devicetree/bindings/display/arm,hdlcd.yaml

Comments

Rob Herring (Arm) May 6, 2022, 10:39 p.m. UTC | #1
On Fri, 06 May 2022 15:05:31 +0100, Andre Przywara wrote:
> The Arm HDLCD is a display controller that scans out a framebuffer and
> hands a signal to a digital encoder to generate a DVI or HDMI signal.
> 
> Convert the existing DT binding to DT schema.
> 
> Signed-off-by: Andre Przywara <andre.przywara@arm.com>
> ---
>  .../devicetree/bindings/display/arm,hdlcd.txt | 79 ----------------
>  .../bindings/display/arm,hdlcd.yaml           | 89 +++++++++++++++++++
>  2 files changed, 89 insertions(+), 79 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/display/arm,hdlcd.txt
>  create mode 100644 Documentation/devicetree/bindings/display/arm,hdlcd.yaml
> 

Running 'make dtbs_check' with the schema in this patch gives the
following warnings. Consider if they are expected or the schema is
incorrect. These may not be new warnings.

Note that it is not yet a requirement to have 0 warnings for dtbs_check.
This will change in the future.

Full log is available here: https://patchwork.ozlabs.org/patch/


hdlcd@2a110000: 'port' is a required property
	arch/arm/boot/dts/vexpress-v2p-ca5s.dtb

hdlcd@2b000000: 'port' is a required property
	arch/arm/boot/dts/vexpress-v2p-ca15_a7.dtb
	arch/arm/boot/dts/vexpress-v2p-ca15-tc1.dtb
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/display/arm,hdlcd.txt b/Documentation/devicetree/bindings/display/arm,hdlcd.txt
deleted file mode 100644
index 78bc24296f3e4..0000000000000
--- a/Documentation/devicetree/bindings/display/arm,hdlcd.txt
+++ /dev/null
@@ -1,79 +0,0 @@ 
-ARM HDLCD
-
-This is a display controller found on several development platforms produced
-by ARM Ltd and in more modern of its' Fast Models. The HDLCD is an RGB
-streamer that reads the data from a framebuffer and sends it to a single
-digital encoder (DVI or HDMI).
-
-Required properties:
-  - compatible: "arm,hdlcd"
-  - reg: Physical base address and length of the controller's registers.
-  - interrupts: One interrupt used by the display controller to notify the
-    interrupt controller when any of the interrupt sources programmed in
-    the interrupt mask register have activated.
-  - clocks: A list of phandle + clock-specifier pairs, one for each
-    entry in 'clock-names'.
-  - clock-names: A list of clock names. For HDLCD it should contain:
-      - "pxlclk" for the clock feeding the output PLL of the controller.
-
-Required sub-nodes:
-  - port: The HDLCD connection to an encoder chip. The connection is modeled
-    using the OF graph bindings specified in
-    Documentation/devicetree/bindings/graph.txt.
-
-Optional properties:
-  - memory-region: phandle to a node describing memory (see
-    Documentation/devicetree/bindings/reserved-memory/reserved-memory.txt) to be
-    used for the framebuffer; if not present, the framebuffer may be located
-    anywhere in memory.
-
-
-Example:
-
-/ {
-	...
-
-	hdlcd@2b000000 {
-		compatible = "arm,hdlcd";
-		reg = <0 0x2b000000 0 0x1000>;
-		interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>;
-		clocks = <&oscclk5>;
-		clock-names = "pxlclk";
-		port {
-			hdlcd_output: endpoint@0 {
-				remote-endpoint = <&hdmi_enc_input>;
-			};
-		};
-	};
-
-	/* HDMI encoder on I2C bus */
-	i2c@7ffa0000 {
-		....
-		hdmi-transmitter@70 {
-			compatible = ".....";
-			reg = <0x70>;
-			port@0 {
-				hdmi_enc_input: endpoint {
-					remote-endpoint = <&hdlcd_output>;
-				};
-
-				hdmi_enc_output: endpoint {
-					remote-endpoint = <&hdmi_1_port>;
-				};
-			};
-		};
-
-	};
-
-	hdmi1: connector@1 {
-		compatible = "hdmi-connector";
-		type = "a";
-		port {
-			hdmi_1_port: endpoint {
-				remote-endpoint = <&hdmi_enc_output>;
-			};
-		};
-	};
-
-	...
-};
diff --git a/Documentation/devicetree/bindings/display/arm,hdlcd.yaml b/Documentation/devicetree/bindings/display/arm,hdlcd.yaml
new file mode 100644
index 0000000000000..a2670258c48d3
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/arm,hdlcd.yaml
@@ -0,0 +1,89 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/arm,hdlcd.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Arm HDLCD display controller binding
+
+maintainers:
+  - Liviu Dudau <Liviu.Dudau@arm.com>
+  - Andre Przywara <andre.przywara@arm.com>
+
+description:
+  The Arm HDLCD is a display controller found on several development platforms
+  produced by ARM Ltd and in more modern of its Fast Models. The HDLCD is an
+  RGB streamer that reads the data from a framebuffer and sends it to a single
+  digital encoder (DVI or HDMI).
+
+properties:
+  compatible:
+    const: arm,hdlcd
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clock-names:
+    const: pxlclk
+
+  clocks:
+    maxItems: 1
+    description: The input reference for the pixel clock.
+
+  memory-region:
+    maxItems: 1
+    description:
+      Phandle to a node describing memory to be used for the framebuffer.
+      If not present, the framebuffer may be located anywhere in memory.
+
+  iommus:
+    maxItems: 1
+
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+    unevaluatedProperties: false
+    description:
+      Output endpoint of the controller, connecting the LCD panel signals.
+
+additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - port
+
+examples:
+  - |
+    hdlcd@2b000000 {
+        compatible = "arm,hdlcd";
+        reg = <0x2b000000 0x1000>;
+        interrupts = <0 85 4>;
+        clocks = <&oscclk5>;
+        clock-names = "pxlclk";
+        port {
+            hdlcd_output: endpoint {
+                remote-endpoint = <&hdmi_enc_input>;
+            };
+        };
+    };
+
+    /* HDMI encoder on I2C bus */
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        hdmi-transmitter@70 {
+            compatible = "nxp,tda998x";
+            reg = <0x70>;
+            port {
+                hdmi_enc_input: endpoint {
+                    remote-endpoint = <&hdlcd_output>;
+                };
+            };
+        };
+    };
+...