CHV_CMN_DW1_CH1
val = vlv_dpio_read(display->drm, phy, CHV_CMN_DW1_CH1);
vlv_dpio_write(display->drm, phy, CHV_CMN_DW1_CH1, val);
val = vlv_dpio_read(display->drm, phy, CHV_CMN_DW1_CH1);
vlv_dpio_write(display->drm, phy, CHV_CMN_DW1_CH1, val);
#define CHV_CMN_DW14(ch) _PIPE(ch, CHV_CMN_DW14_CH0, CHV_CMN_DW1_CH1)