1*fc760cb8SSimon Glassconfig DM_PWM 2*fc760cb8SSimon Glass bool "Enable support for pulse-width modulation devices (PWM)" 3*fc760cb8SSimon Glass depends on DM 4*fc760cb8SSimon Glass help 5*fc760cb8SSimon Glass A pulse-width modulator emits a pulse of varying width and provides 6*fc760cb8SSimon Glass control over the duty cycle (high and low time) of the signal. This 7*fc760cb8SSimon Glass is often used to control a voltage level. The more time the PWM 8*fc760cb8SSimon Glass spends in the 'high' state, the higher the voltage. The PWM's 9*fc760cb8SSimon Glass frequency/period can be controlled along with the proportion of that 10*fc760cb8SSimon Glass time that the signal is high. 11