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authorKim, Milo <Milo.Kim@ti.com>2013-07-09 02:11:37 -0700
committerBryan Wu <cooloney@gmail.com>2013-08-26 17:22:10 -0700
commit33b3a561f417ec3e1013999ce8bdb6c055abb1ce (patch)
treec2288f2c8fba1860f433c7fb05cc54e346238cfa /Documentation/devicetree/bindings/leds
parent81d22878092feab779f3efaab404036d31dc06f8 (diff)
leds: support new LP8501 device - another LP55xx common
LP8501 can drive up to 9 channels like LP5523. LEDs can be controlled directly via the I2C and programmable engines are supported. LP55xx common driver LP8501 is one of LP55xx family device, so LP55xx common code are used. Chip specific data is defined in the structure, 'lp55xx_device_config'. Differences between LP8501 and LP5523 Different register layout for LED output control and others. LP8501 specific feature for separate output power selection. LP8501 doesn't support external clock detection. Different programming engine data. LP8501 specific feature - output power selection Output channels are selected by power selection - Vout or Vdd. Separate power for VDD1-6 and VDD7-9 are available. It is configurable in the platform data. To support this feature, LP55xx DT structure and header are changed. Device tree binding is updated as well. LED pattern data Example pattern data is updated in the driver documentation. Signed-off-by: Milo Kim <milo.kim@ti.com> Signed-off-by: Bryan Wu <cooloney@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings/leds')
-rw-r--r--Documentation/devicetree/bindings/leds/leds-lp55xx.txt72
1 files changed, 71 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/leds/leds-lp55xx.txt b/Documentation/devicetree/bindings/leds/leds-lp55xx.txt
index d5176882d8b9..a61727f9a6d1 100644
--- 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)
@@ -11,6 +11,11 @@ Each child has own specific current settings
Optional properties:
- 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
@@ -145,3 +150,68 @@ 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>;
+ };
+};

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