HDMI_CON3
mtk_phy_clear_bits(base + HDMI_CON3, RG_HDMITX_PRD_IMP_EN);
mtk_phy_set_bits(base + HDMI_CON3, RG_HDMITX_PRD_IMP_EN);
mtk_phy_update_field(base + HDMI_CON3, RG_HDMITX_DRV_IMP_EN, imp_en);
mtk_phy_set_bits(hdmi_phy->regs + HDMI_CON3,
mtk_phy_clear_bits(hdmi_phy->regs + HDMI_CON3,
mtk_phy_clear_bits(base + HDMI_CON3, RG_HDMITX_MHLCK_EN);