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authorMatus Ujhelyi <ujhelyi.m@gmail.com>2013-04-29 16:18:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-29 18:28:19 -0700
commit17e45db62a4683a7318294d652895dfad575da41 (patch)
treed35986ffd65302d38b5050cf89bffc06bd7763f3 /Documentation/devicetree
parent4add06645a0be0519030705e3076e1a5ceba7477 (diff)
downloadlinux-17e45db62a4683a7318294d652895dfad575da41.tar.gz
Documentation: add missing documentation for tps65217-bl device tree binding
Signed-off-by: Matus Ujhelyi <matus.ujhelyi@streamunlimited.com> Cc: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/video/backlight/tps65217-backlight.txt24
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diff --git a/Documentation/devicetree/bindings/video/backlight/tps65217-backlight.txt b/Documentation/devicetree/bindings/video/backlight/tps65217-backlight.txt
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+TPS65217 family of regulators
+
+The TPS65217 chip contains a boost converter and current sinks which can be
+used to drive LEDs for use as backlights.
+
+Required properties:
+- compatible: "ti,tps65217"
+- reg: I2C slave address
+- backlight: node for specifying WLED1 and WLED2 lines in TPS65217
+- isel: selection bit, valid values: 1 for ISEL1 (low-level) and 2 for ISEL2 (high-level)
+- fdim: PWM dimming frequency, valid values: 100, 200, 500, 1000
+
+Each regulator is defined using the standard binding for regulators.
+
+Example:
+
+ tps: tps@24 {
+ reg = <0x24>;
+ compatible = "ti,tps65217";
+ backlight {
+ isel = <1>; /* 1 - ISET1, 2 ISET2 */
+ fdim = <100>; /* TPS65217_BL_FDIM_100HZ */
+ };
+ };