linux-kernel - [PATCH 2/3] dt-bindings: leds: Shiji Lighting APA102C LED driver

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Date:   Tue, 18 Feb 2020 10:37:36 +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
Cc:     Nicolas Belin <nbelin@...libre.com>
Subject: [PATCH 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     | 91 ++++++++++++++++++++++
 1 file changed, 91 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..24bc2fc19fcb
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-apa102c.yaml
@@ -0,0 +1,91 @@
+# 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 LED is represented as a 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
+
+required:
+  - compatible
+  - reg
+  - spi-max-frequency
+  - '#address-cells'
+  - '#size-cells'
+
+patternProperties:
+  "^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
+
+      linux,default-trigger: true
+
+    required:
+      - reg
+
+examples:
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        led-controller@0 {
+            compatible = "shiji,apa102c";
+            reg = <0>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+            spi-max-frequency = <1000000>;
+            led@0 {
+                reg = <0>;
+                label = "led1";
+            };
+
+            led@1 {
+                reg = <1>;
+                label = "led2";
+            };
+
+            led@2 {
+                reg = <2>;
+                label = "led3";
+            };
+        };
+    };
-- 
2.7.4