305 	u8 impedance, impedance_en;  in mtk_hdmi_pll_drv_setting()  local
311 	/* bias & impedance setting:  in mtk_hdmi_pll_drv_setting()
312 	 * 3G < data rate <= 6G: enable impedance 100ohm,  in mtk_hdmi_pll_drv_setting()
315 	 *      enalbe impedance 100ohm  in mtk_hdmi_pll_drv_setting()
317 	 * 27M =< pixel clk < 74.175: disable impedance  in mtk_hdmi_pll_drv_setting()
326 		impedance = 0x36; /* 100ohm */  in mtk_hdmi_pll_drv_setting()
331 		impedance = 0x36; /* 100ohm */  in mtk_hdmi_pll_drv_setting()
336 		impedance = 0x0;  in mtk_hdmi_pll_drv_setting()
347 	/* impedance */  in mtk_hdmi_pll_drv_setting()
349 	mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_D0_EN1, impedance);  in mtk_hdmi_pll_drv_setting()
350 	mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_D1_EN1, impedance);  in mtk_hdmi_pll_drv_setting()
351 	mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_D2_EN1, impedance);  in mtk_hdmi_pll_drv_setting()
352 	mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_CLK_EN1, impedance);  in mtk_hdmi_pll_drv_setting()