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Message-ID: <20240110102535.246177-2-dharma.b@microchip.com>
Date: Wed, 10 Jan 2024 15:55:33 +0530
From: Dharma Balasubiramani <dharma.b@...rochip.com>
To: <sam@...nborg.org>, <bbrezillon@...nel.org>,
<maarten.lankhorst@...ux.intel.com>, <mripard@...nel.org>,
<tzimmermann@...e.de>, <airlied@...il.com>, <daniel@...ll.ch>,
<robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
<conor+dt@...nel.org>, <nicolas.ferre@...rochip.com>,
<alexandre.belloni@...tlin.com>, <claudiu.beznea@...on.dev>,
<dri-devel@...ts.freedesktop.org>, <devicetree@...r.kernel.org>,
<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
<lee@...nel.org>, <thierry.reding@...il.com>,
<u.kleine-koenig@...gutronix.de>, <linux-pwm@...r.kernel.org>
CC: Dharma Balasubiramani <dharma.b@...rochip.com>
Subject: [PATCH 1/3] dt-bindings: display: convert Atmel's HLCDC to DT schema
Convert the existing DT binding to DT schema of the Atmel's HLCDC display
controller.
Signed-off-by: Dharma Balasubiramani <dharma.b@...rochip.com>
---
.../display/atmel/atmel,hlcdc-dc.yaml | 133 ++++++++++++++++++
.../bindings/display/atmel/hlcdc-dc.txt | 75 ----------
2 files changed, 133 insertions(+), 75 deletions(-)
create mode 100644 Documentation/devicetree/bindings/display/atmel/atmel,hlcdc-dc.yaml
delete mode 100644 Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt
diff --git a/Documentation/devicetree/bindings/display/atmel/atmel,hlcdc-dc.yaml b/Documentation/devicetree/bindings/display/atmel/atmel,hlcdc-dc.yaml
new file mode 100644
index 000000000000..49ef28646c48
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/atmel/atmel,hlcdc-dc.yaml
@@ -0,0 +1,133 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright (C) 2024 Microchip Technology, Inc. and its subsidiaries
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/atmel/atmel,hlcdc-dc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel's HLCDC (High LCD Controller) DRM driver
+
+maintainers:
+ - Nicolas Ferre <nicolas.ferre@...rochip.com>
+ - Alexandre Belloni <alexandre.belloni@...tlin.com>
+ - Claudiu Beznea <claudiu.beznea@...on.dev>
+
+description: |
+ Device-Tree bindings for Atmel's HLCDC DRM driver. The Atmel HLCDC Display
+ Controller is a subdevice of the HLCDC MFD device.
+ # See ../../mfd/atmel,hlcdc.yaml for more details.
+
+properties:
+ compatible:
+ const: atmel,hlcdc-display-controller
+
+ pinctrl-names:
+ const: default
+
+ pinctrl-0: true
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ port@0:
+ $ref: /schemas/graph.yaml#/$defs/port-base
+ unevaluatedProperties: false
+ description:
+ Output endpoint of the controller, connecting the LCD panel signals.
+
+ properties:
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ reg:
+ maxItems: 1
+
+ endpoint:
+ $ref: /schemas/graph.yaml#/$defs/endpoint-base
+ unevaluatedProperties: false
+ description:
+ Endpoint connecting the LCD panel signals.
+
+ properties:
+ bus-width:
+ description: |
+ Any endpoint grandchild node may specify a desired video interface according to
+ ../../media/video-interfaces.yaml, specifically "bus-width" whose recognized
+ values are <12>, <16>, <18> and <24>, and override any output mode selection
+ heuristic, forcing "rgb444","rgb565", "rgb666" and "rgb888" respectively.
+ enum: [ 12, 16, 18, 24 ]
+
+additionalProperties: false
+
+required:
+ - '#address-cells'
+ - '#size-cells'
+ - compatible
+ - pinctrl-names
+ - pinctrl-0
+ - port@0
+
+examples:
+ - |
+ #include <dt-bindings/clock/at91.h>
+ #include <dt-bindings/dma/at91.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ //Example 1
+ hlcdc: hlcdc@...30000 {
+ compatible = "atmel,sama5d3-hlcdc";
+ reg = <0xf0030000 0x2000>;
+ interrupts = <36 IRQ_TYPE_LEVEL_HIGH 0>;
+ clocks = <&lcdc_clk>, <&lcdck>, <&clk32k>;
+ clock-names = "periph_clk","sys_clk", "slow_clk";
+
+ hlcdc-display-controller {
+ compatible = "atmel,hlcdc-display-controller";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb888>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ hlcdc_panel_output: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&panel_input>;
+ };
+ };
+ };
+
+ hlcdc_pwm: hlcdc-pwm {
+ compatible = "atmel,hlcdc-pwm";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_lcd_pwm>;
+ #pwm-cells = <3>;
+ };
+ };
+ - |
+ //Example 2 With a video interface override to force rgb565
+ hlcdc-display-controller {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb565>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+ hlcdc_panel_output2: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&panel_input>;
+ bus-width = <16>;
+ };
+ };
+ };
diff --git a/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt b/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt
deleted file mode 100644
index 923aea25344c..000000000000
--- a/Documentation/devicetree/bindings/display/atmel/hlcdc-dc.txt
+++ /dev/null
@@ -1,75 +0,0 @@
-Device-Tree bindings for Atmel's HLCDC (High LCD Controller) DRM driver
-
-The Atmel HLCDC Display Controller is subdevice of the HLCDC MFD device.
-See ../../mfd/atmel-hlcdc.txt for more details.
-
-Required properties:
- - compatible: value should be "atmel,hlcdc-display-controller"
- - pinctrl-names: the pin control state names. Should contain "default".
- - pinctrl-0: should contain the default pinctrl states.
- - #address-cells: should be set to 1.
- - #size-cells: should be set to 0.
-
-Required children nodes:
- Children nodes are encoding available output ports and their connections
- to external devices using the OF graph representation (see ../graph.txt).
- At least one port node is required.
-
-Optional properties in grandchild nodes:
- Any endpoint grandchild node may specify a desired video interface
- according to ../../media/video-interfaces.txt, specifically
- - bus-width: recognized values are <12>, <16>, <18> and <24>, and
- override any output mode selection heuristic, forcing "rgb444",
- "rgb565", "rgb666" and "rgb888" respectively.
-
-Example:
-
- hlcdc: hlcdc@...30000 {
- compatible = "atmel,sama5d3-hlcdc";
- reg = <0xf0030000 0x2000>;
- interrupts = <36 IRQ_TYPE_LEVEL_HIGH 0>;
- clocks = <&lcdc_clk>, <&lcdck>, <&clk32k>;
- clock-names = "periph_clk","sys_clk", "slow_clk";
-
- hlcdc-display-controller {
- compatible = "atmel,hlcdc-display-controller";
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb888>;
- #address-cells = <1>;
- #size-cells = <0>;
-
- port@0 {
- #address-cells = <1>;
- #size-cells = <0>;
- reg = <0>;
-
- hlcdc_panel_output: endpoint@0 {
- reg = <0>;
- remote-endpoint = <&panel_input>;
- };
- };
- };
-
- hlcdc_pwm: hlcdc-pwm {
- compatible = "atmel,hlcdc-pwm";
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_lcd_pwm>;
- #pwm-cells = <3>;
- };
- };
-
-Example 2: With a video interface override to force rgb565; as above
-but with these changes/additions:
-
- &hlcdc {
- hlcdc-display-controller {
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_lcd_base &pinctrl_lcd_rgb565>;
-
- port@0 {
- hlcdc_panel_output: endpoint@0 {
- bus-width = <16>;
- };
- };
- };
- };
--
2.25.1
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