diff --git a/drivers/gpu/drm/bridge/dw-hdmi.c b/drivers/gpu/drm/bridge/dw-hdmi.c
index 99d51b21d077..a481fc461327 100644
--- a/drivers/gpu/drm/bridge/dw-hdmi.c
+++ b/drivers/gpu/drm/bridge/dw-hdmi.c
@@ -1183,31 +1183,14 @@ static void dw_hdmi_phy_sel_interface_control(struct dw_hdmi *hdmi, u8 enable)
 			 HDMI_PHY_CONF0_SELDIPIF_MASK);
 }
 
-static int hdmi_phy_configure(struct dw_hdmi *hdmi,
-			      unsigned char res, int cscon)
+static int hdmi_phy_configure(struct dw_hdmi *hdmi, int cscon)
 {
-	unsigned res_idx;
 	u8 val, msec, tmds_cfg;
 	const struct dw_hdmi_plat_data *pdata = hdmi->plat_data;
 	const struct dw_hdmi_mpll_config *mpll_config = pdata->mpll_cfg;
 	const struct dw_hdmi_curr_ctrl *curr_ctrl = pdata->cur_ctr;
 	const struct dw_hdmi_phy_config *phy_config = pdata->phy_config;
 
-	switch (res) {
-	case 0:	/* color resolution 0 is 8 bit colour depth */
-	case 8:
-		res_idx = DW_HDMI_RES_8;
-		break;
-	case 10:
-		res_idx = DW_HDMI_RES_10;
-		break;
-	case 12:
-		res_idx = DW_HDMI_RES_12;
-		break;
-	default:
-		return -EINVAL;
-	}
-
 	/* PLL/MPLL Cfg - always match on final entry */
 	for (; mpll_config->mpixelclock != ~0UL; mpll_config++)
 		if (hdmi->hdmi_data.video_mode.mpixelclock <=
@@ -1273,14 +1256,14 @@ static int hdmi_phy_configure(struct dw_hdmi *hdmi,
 	 */
 	if (hdmi->hdmi_data.enc_in_format == YCBCR420 &&
 	    (hdmi->dev_type == RK3399_HDMI || hdmi->dev_type == RK3368_HDMI))
-		hdmi_phy_i2c_write(hdmi, mpll_config->res[res_idx].cpce | 4,
+		hdmi_phy_i2c_write(hdmi, mpll_config->res[0].cpce | 4,
 				   0x06);
 	else
-		hdmi_phy_i2c_write(hdmi, mpll_config->res[res_idx].cpce, 0x06);
-	hdmi_phy_i2c_write(hdmi, mpll_config->res[res_idx].gmp, 0x15);
+		hdmi_phy_i2c_write(hdmi, mpll_config->res[0].cpce, 0x06);
+	hdmi_phy_i2c_write(hdmi, mpll_config->res[0].gmp, 0x15);
 
 	/* CURRCTRL */
-	hdmi_phy_i2c_write(hdmi, curr_ctrl->curr[res_idx], 0x10);
+	hdmi_phy_i2c_write(hdmi, curr_ctrl->curr[0], 0x10);
 
 	hdmi_phy_i2c_write(hdmi, 0x0000, 0x13);  /* PLLPHBYCTRL */
 	hdmi_phy_i2c_write(hdmi, 0x0006, 0x17);
@@ -1346,7 +1329,7 @@ static int dw_hdmi_phy_init(struct dw_hdmi *hdmi)
 		dw_hdmi_phy_enable_powerdown(hdmi, true);
 
 		/* Enable CSC */
-		ret = hdmi_phy_configure(hdmi, 8, cscon);
+		ret = hdmi_phy_configure(hdmi, cscon);
 		if (ret)
 			return ret;
 	}