HDMI_NV_PDISP_SOR_PWR
WR4(sc, HDMI_NV_PDISP_SOR_PWR, SOR_PWR_SETTING_NEW);
WR4(sc, HDMI_NV_PDISP_SOR_PWR, 0);
val = RD4(sc, HDMI_NV_PDISP_SOR_PWR);