Hi, On 10/26/24 7:48 AM, Vicentiu Galanopulo wrote: > Add usage for sysfs hw_pattern entry for leds-st1202 > > Signed-off-by: Vicentiu Galanopulo <vicentiu.galanopulo@xxxxxxxxxxxxxxxxx> > --- > Documentation/leds/leds-st1202.rst | 36 ++++++++++++++++++++++++++++++ > 1 file changed, 36 insertions(+) > create mode 100644 Documentation/leds/leds-st1202.rst > > diff --git a/Documentation/leds/leds-st1202.rst b/Documentation/leds/leds-st1202.rst > new file mode 100644 > index 000000000000..72286a512c69 > --- /dev/null > +++ b/Documentation/leds/leds-st1202.rst > @@ -0,0 +1,36 @@ > +.. SPDX-License-Identifier: GPL-2.0 > + > +============================================ > +Kernel driver for STMicroelectronics LED1202 > +============================================ > + > +/sys/class/leds/<led>/hw_pattern > +-------------------------------- > + > +Specify a hardware pattern for the ST1202 LED. The LED > +controller, implements 12 low-side current generators no comma ^ > +with independent dimming control. Internal volatile memory > +allows the user to store up to 8 different patterns. > +Each pattern is a particular output configuration in terms > +of PWM duty-cycle and duration (ms). > + > +To be compatible with the hardware pattern > +format, maximum 8 tuples of brightness (PWM) and duration must > +be written to hw_pattern. > + > +- Min pattern duration: 22 ms > +- Max pattern duration: 5660 ms > + > +The format of the hardware pattern values should be: > +"brightness duration brightness duration ..." > + > +/sys/class/leds/<led>/repeat > +---------------------------- > + > +Specify a pattern repeat number, which is common for all channels. > +Default is 1, other negative numbers and number 0 are invalid. Default is 1; negative numbers and 0 are invalid. > + > +This file will always return the originally written repeat number. > + > +When the 255 value is written to it, all patterns will repeat > +indefinitely. -- ~Randy
