From: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx> Add PWM normal and complementary modes. Signed-off-by: Claudiu Beznea <claudiu.beznea@xxxxxxxxxxxxx> --- Documentation/pwm.txt | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/Documentation/pwm.txt b/Documentation/pwm.txt index 8fbf0aa3ba2d..669fd4c9cc8e 100644 --- a/Documentation/pwm.txt +++ b/Documentation/pwm.txt @@ -110,6 +110,28 @@ channel that was exported. The following properties will then be available: - 0 - disabled - 1 - enabled + mode + Get/set PWM channel working mode. + + In the following description PWMx_y refers to output y of PWM with ID x. + + Normal mode - for PWM channels with one output; this should be the + default working mode for every PWM channel; output waveforms looks + like this: + __ __ __ __ + PWMx __| |____| |____| |____| |__ + ^ ^ ^ ^ + + Complementary mode - for PWM channels with two outputs; output waveforms + looks line this: + __ __ __ __ + PWMx_0 __| |____| |____| |____| |__ + __ ____ ____ ____ __ + PWMx_1 |__| |__| |__| |__| + ^ ^ ^ ^ + + Where '^' specifies the beginning of a period. + Implementing a PWM driver ------------------------- -- 2.7.4
