lkml.org 
[lkml]   [2020]   [Apr]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/3] drm/db9000: Add bindings documentation for LCD controller
Date
Add the DT bindings information for the Digital Blocks DB9000 LCD
controller. Also include documentation for the Renesas RZN1 specific
compatible string.

Signed-off-by: Gareth Williams <gareth.williams.jx@renesas.com>
---
.../devicetree/bindings/display/db9000,du.yaml | 87 ++++++++++++++++++++++
.../devicetree/bindings/vendor-prefixes.yaml | 2 +
2 files changed, 89 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/db9000,du.yaml

diff --git a/Documentation/devicetree/bindings/display/db9000,du.yaml b/Documentation/devicetree/bindings/display/db9000,du.yaml
new file mode 100644
index 0000000..73a9311
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/db9000,du.yaml
@@ -0,0 +1,87 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/db9000,du.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: DB9000 LCD Controller
+
+maintainers:
+ - Gareth Williams <gareth.williams.jx@renesas.com>
+
+description: |
+ This is an LCD controller by Digital Blocks available for SoCs. The DB9000
+ controller reads from the framebuffer to display on a single RGB interface.
+ Output may be formatted in RGB or BGR. The driver also supports the PWM
+ logic that is included with the controller.
+
+properties:
+
+ compatible:
+ oneOf:
+ - const: digital-blocks,drm-db9000
+ - const: digital-blocks,drm-rzn1
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: |
+ A phandle and clock-specifier pair to be used as a pixel clock.
+
+ clock-names:
+ items:
+ - const: lcd_eclk
+
+ port:
+ type: object
+ description: The panel endpoint connection.
+
+ bits-per-pixel:
+ description: |
+ Default is 24. This selects the number of bits used to represent
+ a single pixel within the controller.
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ enum: [8, 16, 24, 32]
+
+ bus-width:
+ description: |
+ The width of the interface to the LCD panel. This is needed
+ if the bits-per-pixel property is set to 16 or less, but the board
+ connects to a 24-bit panel. In which case, the controller will shift the
+ 16-bit data to the most significant bits of the device. Default is 24.
+
+ "#pwm-cells":
+ const: 2
+
+required:
+ - compatible
+ - "#pwm-cells"
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+ - port
+
+examples:
+ - |+
+ drm@53004000 {
+ compatible = "digital-blocks,drm-db9000";
+ reg = <0x53004000 0x1000>;
+ interrupts = <10 97 120>;
+ clocks = <&sysctrl 26>;
+ clock-names = "clk_slcd";
+ bus-width = <24>;
+ pinctrl-0 = <&pins_lcd>;
+ #pwm-cells = <2>;
+
+ port {
+ drm_point: endpoint@0 {
+ remote-endpoint = <&display_in>;
+ };
+ };
+ };
+...
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index 6992bbb..138f76e 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -235,6 +235,8 @@ patternProperties:
description: Shenzhen Yagu Electronic Technology Co., Ltd.
"^digi,.*":
description: Digi International Inc.
+ "^digital-blocks,.*":
+ description: Digital Blocks, Inc.
"^digilent,.*":
description: Diglent, Inc.
"^dioo,.*":
--
2.7.4
\
 
 \ /
  Last update: 2020-04-27 10:23    [W:0.101 / U:29.660 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site