--- a/drivers/pwm/pwm-meson.c +++ b/drivers/pwm/pwm-meson.c @@ -351,8 +351,18 @@ static int meson_pwm_get_state(struct pw channel->lo = FIELD_GET(PWM_LOW_MASK, value); channel->hi = FIELD_GET(PWM_HIGH_MASK, value); - state->period = meson_pwm_cnt_to_ns(chip, pwm, channel->lo + channel->hi); - state->duty_cycle = meson_pwm_cnt_to_ns(chip, pwm, channel->hi); + if (channel->lo == 0) { + state->period = meson_pwm_cnt_to_ns(chip, pwm, channel->hi); + state->duty_cycle = state->period; + } else if (channel->lo >= channel->hi) { + state->period = meson_pwm_cnt_to_ns(chip, pwm, + channel->lo + channel->hi); + state->duty_cycle = meson_pwm_cnt_to_ns(chip, pwm, + channel->hi); + } else { + state->period = 0; + state->duty_cycle = 0; + } state->polarity = PWM_POLARITY_NORMAL;