linux-kernel - [PATCH v4 2/2] backlight arcxcnn devicetree bindings for ArcticSand

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Date:   Fri, 27 Jan 2017 10:19:38 -0500
From:   Olimpiu Dejeu <olimpiu@...ticsand.com>
To:     robh@...nel.org
Cc:     lee.jones@...aro.org, linux-kernel@...r.kernel.org,
        linux-fbdev@...r.kernel.org, devicetree@...r.kernel.org,
        jingoohan1@...il.com, bdodge@...ticsand.com, joe@...ches.com,
        medasaro@...ticsand.com, Olimpiu Dejeu <olimpiu@...ticsand.com>
Subject: [PATCH v4 2/2] backlight arcxcnn devicetree bindings for ArcticSand

backlight: Add devicetree bindings for the Arctic Sand backlight driver
This patch provides devicetree bindings for the Arctic Sand
    driver submitted in the previous patch
Acked-by: Rob Herring <robh@...nel.org>
Signed-off-by: Olimpiu Dejeu <olimpiu@...ticsand.com>
---

v3 => v4:
- Added spaces for increased readability per Lee Jones
v2 => v3:
- Version updated to match other patch in set. No other changes.
v1 => v2:
- Version updated to match other patch in set. No other changes.

 .../bindings/leds/backlight/arcxcnn_bl.txt         | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/leds/backlight/arcxcnn_bl.txt

diff --git a/Documentation/devicetree/bindings/leds/backlight/arcxcnn_bl.txt b/Documentation/devicetree/bindings/leds/backlight/arcxcnn_bl.txt
new file mode 100644
index 0000000..ecb7731
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/backlight/arcxcnn_bl.txt
@@ -0,0 +1,31 @@
+Binding for ArcticSand arc2c0608 LED driver
+
+Required properties:
+- compatible:		should be "arc,arc2c0608"
+- reg:			slave address
+
+Optional properties:
+- default-brightness:	brightness value on boot, value from: 0-4095
+- label:		The name of the backlight device
+			See Documentation/devicetree/bindings/leds/common.txt
+- led-sources:		List of enabled channels from 0 to 5.
+			See Documentation/devicetree/bindings/leds/common.txt
+
+- arc,led-config-0:	setting for register ILED_CONFIG_0
+- arc,led-config-1:	setting for register ILED_CONFIG_1
+- arc,dim-freq:		PWM mode frequence setting (bits [3:0] used)
+- arc,comp-config:	setting for register CONFIG_COMP
+- arc,filter-config:	setting for register FILTER_CONFIG
+- arc,trim-config:	setting for register IMAXTUNE
+
+Example:
+
+arc2c0608@30 {
+	compatible = "arc,arc2c0608";
+	reg = <0x30>;
+	default-brightness = <500>;
+	label = "lcd-backlight";
+	linux,default-trigger = "backlight";
+	led-sources = <0 1 2 5>;
+};
+
-- 
2.7.4