1 files changed, 147 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
new file mode 100644
index 000000000000..d5176882d8b9
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
@@ -0,0 +1,147 @@
+Binding for TI/National Semiconductor LP55xx Led Drivers
+
+Required properties:
+- compatible: "national,lp5521" or "national,lp5523" or "ti,lp5562"
+- reg: I2C slave address
+- clock-mode: Input clock mode, (0: automode, 1: internal, 2: external)
+
+Each child has own specific current settings
+- led-cur: Current setting at each led channel (mA x10, 0 if led is not connected)
+- max-cur: Maximun current at each led channel.
+
+Optional properties:
+- label: Used for naming LEDs
+
+Alternatively, each child can have specific channel name
+- chan-name: Name of each channel name
+
+example 1) LP5521
+3 LED channels, external clock used. Channel names are 'lp5521_pri:channel0',
+'lp5521_pri:channel1' and 'lp5521_pri:channel2'
+
+lp5521@32 {
+        compatible = "national,lp5521";
+        reg = <0x32>;
+        label = "lp5521_pri";
+        clock-mode = /bits/ 8 <2>;
+
+        chan0 {
+                led-cur = /bits/ 8 <0x2f>;
+                max-cur = /bits/ 8 <0x5f>;
+        };
+
+        chan1 {
+                led-cur = /bits/ 8 <0x2f>;
+                max-cur = /bits/ 8 <0x5f>;
+        };
+
+        chan2 {
+                led-cur = /bits/ 8 <0x2f>;
+                max-cur = /bits/ 8 <0x5f>;
+        };
+};
+
+example 2) LP5523
+9 LED channels with specific name. Internal clock used.
+The I2C slave address is configurable with ASEL1 and ASEL0 pins.
+Available addresses are 32/33/34/35h.
+
+ASEL1    ASEL0    Address
+-------------------------
+ GND      GND       32h
+ GND      VEN       33h
+ VEN      GND       34h
+ VEN      VEN       35h
+
+lp5523@32 {
+        compatible = "national,lp5523";
+        reg = <0x32>;
+        clock-mode = /bits/ 8 <1>;
+
+        chan0 {
+                chan-name = "d1";
+                led-cur = /bits/ 8 <0x14>;
+                max-cur = /bits/ 8 <0x20>;
+        };
+
+        chan1 {
+                chan-name = "d2";
+                led-cur = /bits/ 8 <0x14>;
+                max-cur = /bits/ 8 <0x20>;
+        };
+
+        chan2 {
+                chan-name = "d3";
+                led-cur = /bits/ 8 <0x14>;
+                max-cur = /bits/ 8 <0x20>;
+        };
+
+        chan3 {
+                chan-name = "d4";
+                led-cur = /bits/ 8 <0x14>;
+                max-cur = /bits/ 8 <0x20>;
+        };
+
+        chan4 {
+                chan-name = "d5";
+                led-cur = /bits/ 8 <0x14>;
+                max-cur = /bits/ 8 <0x20>;
+        };
+
+        chan5 {
+                chan-name = "d6";
+                led-cur = /bits/ 8 <0x14>;
+                max-cur = /bits/ 8 <0x20>;
+        };
+
+        chan6 {
+                chan-name = "d7";
+                led-cur = /bits/ 8 <0x14>;
+                max-cur = /bits/ 8 <0x20>;
+        };
+
+        chan7 {
+                chan-name = "d8";
+                led-cur = /bits/ 8 <0x14>;
+                max-cur = /bits/ 8 <0x20>;
+        };
+
+        chan8 {
+                chan-name = "d9";
+                led-cur = /bits/ 8 <0x14>;
+                max-cur = /bits/ 8 <0x20>;
+        };
+};
+
+example 3) LP5562
+4 channels are defined.
+
+lp5562@30 {
+        compatible = "ti,lp5562";
+        reg = <0x30>;
+        clock-mode = /bits/8 <2>;
+
+        chan0 {
+                chan-name = "R";
+                led-cur = /bits/ 8 <0x20>;
+                max-cur = /bits/ 8 <0x60>;
+        };
+
+        chan1 {
+                chan-name = "G";
+                led-cur = /bits/ 8 <0x20>;
+                max-cur = /bits/ 8 <0x60>;
+        };
+
+        chan2 {
+                chan-name = "B";
+                led-cur = /bits/ 8 <0x20>;
+                max-cur = /bits/ 8 <0x60>;
+        };
+
+        chan3 {
+                chan-name = "W";
+                led-cur = /bits/ 8 <0x20>;
+                max-cur = /bits/ 8 <0x60>;
+        };
+};