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On a imx6q-cubox-i board, which has an LED driven by PWM, when the system goes into suspend the PWM block is disabled by default, then the PWM pin goes to logic level zero and turn on the LED during suspend, which is not really the behaviour we want to see. By keeping the PWM enabled during suspend via STOPEN bit, the pwm-leds driver sets the brightness to zero in suspend and then the LED is turned off as expected. So always set the STOPEN to fix the PWM behaviour in suspend. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.