STI_PWM_CTRL
[PWMCLK_PRESCALE_HIGH] = REG_FIELD(STI_PWM_CTRL, 11, 14),
[CPTCLK_PRESCALE] = REG_FIELD(STI_PWM_CTRL, 4, 8),
[PWM_OUT_EN] = REG_FIELD(STI_PWM_CTRL, 9, 9),
[PWM_CPT_EN] = REG_FIELD(STI_PWM_CTRL, 10, 10),
[PWMCLK_PRESCALE_LOW] = REG_FIELD(STI_PWM_CTRL, 0, 3),