PWM_CLK_GATING
if ((val & BIT_CH(PWM_CLK_GATING | PWM_EN, pwm->hwpwm)) ==
BIT_CH(PWM_CLK_GATING | PWM_EN, pwm->hwpwm))
ctrl &= ~BIT_CH(PWM_CLK_GATING, pwm->hwpwm);
ctrl |= BIT_CH(PWM_CLK_GATING, pwm->hwpwm);
ctrl &= ~BIT_CH(PWM_CLK_GATING, pwm->hwpwm);