Add a documentation of LED Multicolor LED class specific
sysfs attributes.

Signed-off-by: Dan Murphy <dmur...@ti.com>
---
 .../ABI/testing/sysfs-class-led-multicolor    | 73 +++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-class-led-multicolor

diff --git a/Documentation/ABI/testing/sysfs-class-led-multicolor 
b/Documentation/ABI/testing/sysfs-class-led-multicolor
new file mode 100644
index 000000000000..4ea54c2ad4c8
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-led-multicolor
@@ -0,0 +1,73 @@
+What:          /sys/class/leds/<led>/brightness
+Date:          Sept 2019
+KernelVersion: 5.5
+Contact:       Dan Murphy <dmur...@ti.com>
+Description:   read/write
+               The multicolor class will redirect the device drivers call back
+               function for brightness control to the multicolor class
+               brightness control function.
+
+               Writing to this file will update all LEDs within the group to a
+               calculated percentage of what each color LED in the group is set
+               to.  The percentage is calculated via the equation below:
+
+               led_brightness = requested_value * 
led_color_intensity/led_color_max_intensity
+
+               For additional details please refer to
+               Documentation/leds/leds-class-multicolor.rst.
+
+               The value of the color is from 0 to
+               /sys/class/leds/<led>/max_brightness.
+
+What:          /sys/class/leds/<led>/colors/color_mix
+Date:          Sept 2019
+KernelVersion: 5.5
+Contact:       Dan Murphy <dmur...@ti.com>
+Description:   read/write
+               The values written to this file should contain the intensity
+               values of each multicolor LED within the colors directory. The
+               index of given color is reported by the color_id file present in
+               colors/<color> directory. The index determines the position in
+               the sequence of intensities on which the related intensity
+               should be passed to this file.
+
+               For additional details please refer to
+               Documentation/leds/leds-class-multicolor.rst.
+
+What:          /sys/class/leds/<led>/colors/<led_color>/color_id
+Date:          Sept 2019
+KernelVersion: 5.5
+Contact:       Dan Murphy <dmur...@ti.com>
+Description:   read only
+               This file when read will return the index of the color in the
+               color_mix.
+
+               For additional details please refer to
+               Documentation/leds/leds-class-multicolor.rst.
+
+What:          /sys/class/leds/<led>/colors/<led_color>/intensity
+Date:          Sept 2019
+KernelVersion: 5.5
+Contact:       Dan Murphy <dmur...@ti.com>
+Description:   read/write
+               The led_color directory is dynamically created based on the
+               colors defined by the registrar of the class.
+               The led_color can be but not limited to red, green, blue,
+               white, amber, yellow and violet.  There is one directory per 
color
+               presented.  The brightness file is created under each
+               led_color directory and controls the individual LED color
+               setting.
+
+               The value of the color is from 0 to
+               /sys/class/leds/<led>/colors/<led_color>/max_intensity.
+
+What:          /sys/class/leds/<led>/colors/<led_color>/max_intensity
+Date:          Sept 2019
+KernelVersion: 5.5
+Contact:       Dan Murphy <dmur...@ti.com>
+Description:   read only
+               Maximum intensity level for the LED color, default is
+               255 (LED_FULL).
+
+               If the LED does not support different intensity levels, this
+               should be 1.
-- 
2.22.0.214.g8dca754b1e

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