leds: lp55xx: handle enable pin in driver

[karo-tx-linux.git] / Documentation / devicetree / bindings / leds / leds-lp55xx.txt

diff --git a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
index d5176882d8b999563f11a25a6cb806caf0e863d6..c55b8c016a9e2bc55490efb3228a285a129725fc 100644 (file)
--- a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
+++ b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
@@ -1,7 +1,7 @@
 Binding for TI/National Semiconductor LP55xx Led Drivers
 
 Required properties:
-- compatible: "national,lp5521" or "national,lp5523" or "ti,lp5562"
+- compatible: "national,lp5521" or "national,lp5523" or "ti,lp5562" or "ti,lp8501"
 - reg: I2C slave address
 - clock-mode: Input clock mode, (0: automode, 1: internal, 2: external)
 
@@ -10,14 +10,23 @@ Each child has own specific current settings
 - max-cur: Maximun current at each led channel.
 
 Optional properties:
+- enable-gpio: GPIO attached to the chip's enable pin
 - label: Used for naming LEDs
+- pwr-sel: LP8501 specific property. Power selection for output channels.
+         0: D1~9 are connected to VDD
+         1: D1~6 with VDD, D7~9 with VOUT
+         2: D1~6 with VOUT, D7~9 with VDD
+         3: D1~9 are connected to VOUT
 
-Alternatively, each child can have specific channel name
-- chan-name: Name of each channel name
+Alternatively, each child can have a specific channel name and trigger:
+- chan-name (optional): name of channel
+- linux,default-trigger (optional): see
+  Documentation/devicetree/bindings/leds/common.txt
 
 example 1) LP5521
 3 LED channels, external clock used. Channel names are 'lp5521_pri:channel0',
-'lp5521_pri:channel1' and 'lp5521_pri:channel2'
+'lp5521_pri:channel1' and 'lp5521_pri:channel2', with a heartbeat trigger
+on channel 0.
 
 lp5521@32 {
        compatible = "national,lp5521";
@@ -28,6 +37,7 @@ lp5521@32 {
        chan0 {
                led-cur = /bits/ 8 <0x2f>;
                max-cur = /bits/ 8 <0x5f>;
+               linux,default-trigger = "heartbeat";
        };
 
        chan1 {
@@ -145,3 +155,68 @@ lp5562@30 {
                max-cur = /bits/ 8 <0x60>;
        };
 };
+
+example 4) LP8501
+9 channels are defined. The 'pwr-sel' is LP8501 specific property.
+Others are same as LP5523.
+
+lp8501@32 {
+       compatible = "ti,lp8501";
+       reg = <0x32>;
+       clock-mode = /bits/ 8 <2>;
+       pwr-sel = /bits/ 8 <3>; /* D1~9 connected to VOUT */
+
+       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>;
+       };
+};