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Message-Id: <20230719102430.316504-1-viteosen@gmail.com>
Date: Wed, 19 Jul 2023 13:24:29 +0300
From: Viktar Simanenka <viteosen@...il.com>
To: David Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Viktar Simanenka <viteosen@...il.com>,
dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] dt-bindings: add vendor-prefixes and bindings for pcd8544 displays
Signed-off-by: Viktar Simanenka <viteosen@...il.com>
---
.../bindings/display/philips,pcd8544.yaml | 89 +++++++++++++++++++
.../devicetree/bindings/vendor-prefixes.yaml | 2 +
2 files changed, 91 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/philips,pcd8544.yaml
diff --git a/Documentation/devicetree/bindings/display/philips,pcd8544.yaml b/Documentation/devicetree/bindings/display/philips,pcd8544.yaml
new file mode 100644
index 000000000000..ac880d9d8cc1
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/philips,pcd8544.yaml
@@ -0,0 +1,89 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/philips,pcd8544.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Philips PCD8544 LCD Display Controller
+
+maintainers:
+ - Viktar Simanenka <viteosen@...il.com>
+
+description: |
+ Philips PCD8544 LCD Display Controller with SPI control bus.
+ Monochrome 84x48 LCD displays, such as Nokia 5110/3310 LCDs.
+ May contain backlight LED.
+
+allOf:
+ - $ref: panel/panel-common.yaml#
+ - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - philips,pcd8544
+
+ dc-gpios:
+ maxItems: 1
+ description: Data/Command selection pin (D/CX)
+
+ reset-gpios:
+ maxItems: 1
+ description: Display Reset pin (RST)
+
+ philips,inverted:
+ type: boolean
+ description: Display color inversion
+
+ philips,voltage-op:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 127
+ description: Display liquid crystal operation voltage
+
+ philips,bias:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 7
+ description: Display bias voltage system value
+
+ philips,temperature-coeff:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 3
+ description: Display temperature compensation coefficient
+
+required:
+ - compatible
+ - reg
+ - dc-gpios
+ - reset-gpios
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ display@0 {
+ compatible = "philips,pcd8544";
+ spi-max-frequency = <8000000>;
+ reg = <0>;
+
+ dc-gpios = <&pio 0 3 GPIO_ACTIVE_HIGH>; /* DC=PA3 */
+ reset-gpios = <&pio 0 1 GPIO_ACTIVE_HIGH>; /* RESET=PA1 */
+ backlight = <&backlight>;
+
+ philips,inverted;
+ philips,voltage-op = <0>;
+ philips,bias = <4>;
+ philips,temperature-coeff = <0>;
+ };
+ };
+
+...
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.yaml b/Documentation/devicetree/bindings/vendor-prefixes.yaml
index af60bf1a6664..0c3844af6776 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.yaml
+++ b/Documentation/devicetree/bindings/vendor-prefixes.yaml
@@ -1037,6 +1037,8 @@ patternProperties:
description: Pervasive Displays, Inc.
"^phicomm,.*":
description: PHICOMM Co., Ltd.
+ "^philips,.*":
+ description: Koninklijke Philips N.V.
"^phytec,.*":
description: PHYTEC Messtechnik GmbH
"^picochip,.*":
--
2.34.1
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