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Message-Id: <1582727592-4510-3-git-send-email-nbelin@baylibre.com>
Date: Wed, 26 Feb 2020 15:33:11 +0100
From: Nicolas Belin <nbelin@...libre.com>
To: linux-kernel@...r.kernel.org, linux-leds@...r.kernel.org,
jacek.anaszewski@...il.com, pavel@....cz, dmurphy@...com,
devicetree@...r.kernel.org
Cc: baylibre-upstreaming@...ups.io, Nicolas Belin <nbelin@...libre.com>
Subject: [PATCH RFC v2 2/3] dt-bindings: leds: Shiji Lighting APA102C LED driver
Document Shiji Lighting APA102C LED driver device tree bindings.
Signed-off-by: Nicolas Belin <nbelin@...libre.com>
---
.../devicetree/bindings/leds/leds-apa102c.yaml | 154 +++++++++++++++++++++
1 file changed, 154 insertions(+)
create mode 100644 Documentation/devicetree/bindings/leds/leds-apa102c.yaml
diff --git a/Documentation/devicetree/bindings/leds/leds-apa102c.yaml b/Documentation/devicetree/bindings/leds/leds-apa102c.yaml
new file mode 100644
index 000000000000..90c827ab5a5a
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-apa102c.yaml
@@ -0,0 +1,154 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/leds-apa102c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: LED driver for Shiji Lighting - APA102C
+
+maintainers:
+ - Nicolas Belin <nbelin@...libre.com>
+
+description:
+ Each RGB LED is represented as a multi-led sub-node of the leds-apa102c
+ device. Each LED
+ is a three color rgb LED with 32 levels brightness adjustment that can be
+ cascaded so that multiple LEDs can be set with a single command.
+
+properties:
+ compatible:
+ const: shiji,apa102c
+
+ reg:
+ maxItems: 1
+
+ spi-max-frequency:
+ maximum: 1000000
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+patternProperties:
+ "^multi-led@[0-9]+$":
+ type: object
+ description: |
+ Properties for an array of connected LEDs.
+
+ properties:
+ reg:
+ description: |
+ This property corresponds to the led index. It has to be between 0
+ and the number of managed leds minus 1
+ maxItems: 1
+
+ label:
+ description: |
+ This property corresponds to the name of the led. If not set,
+ the led index will be used to create the led name instead
+ maxItems: 1
+
+ color:
+ const: 8
+
+ linux,default-trigger: true
+
+ "#address-cells":
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+ patternProperties:
+ "^led@[0-9]+$":
+ type: object
+ description: |
+ Properties for the LED color components.
+
+ properties:
+ reg:
+ maxItems: 1
+
+ color:
+ oneOf:
+ - enum: [ 1, 2, 3 ]
+
+ required:
+ - reg
+ - color
+
+ required:
+ - reg
+ - color
+ - '#address-cells'
+ - '#size-cells'
+
+required:
+ - compatible
+ - reg
+ - spi-max-frequency
+ - '#address-cells'
+ - '#size-cells'
+
+examples:
+ - |
+
+ #include <dt-bindings/leds/common.h>
+
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ led-controller@0 {
+ compatible = "shiji,apa102c";
+ reg = <0>;
+ spi-max-frequency = <1000000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ multi-led@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+ color = <LED_COLOR_ID_MULTI>;
+ label = "rgb_led1";
+
+ led@0 {
+ reg = <0>;
+ color = <LED_COLOR_ID_RED>;
+ };
+
+ led@1 {
+ reg = <1>;
+ color = <LED_COLOR_ID_GREEN>;
+ };
+
+ led@2 {
+ reg = <2>;
+ color = <LED_COLOR_ID_BLUE>;
+ };
+ };
+ multi-led@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <1>;
+ color = <LED_COLOR_ID_MULTI>;
+ label = "rgb_led2";
+
+ led@3 {
+ reg = <3>;
+ color = <LED_COLOR_ID_RED>;
+ };
+
+ led@4 {
+ reg = <4>;
+ color = <LED_COLOR_ID_GREEN>;
+ };
+
+ led@5 {
+ reg = <5>;
+ color = <LED_COLOR_ID_BLUE>;
+ };
+ };
+ };
+ };
--
2.7.4
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