BXT_DSI_PLL_ENABLE
val = intel_de_read(display, BXT_DSI_PLL_ENABLE);
intel_de_rmw(display, BXT_DSI_PLL_ENABLE, BXT_DSI_PLL_DO_ENABLE, 0);
if (intel_de_wait_for_clear_ms(display, BXT_DSI_PLL_ENABLE,
intel_de_rmw(display, BXT_DSI_PLL_ENABLE, 0, BXT_DSI_PLL_DO_ENABLE);
if (intel_de_wait_for_set_ms(display, BXT_DSI_PLL_ENABLE,
MMIO_D(BXT_DSI_PLL_ENABLE);