1 files changed, 31 insertions, 5 deletions

diff --git a/drivers/gpu/drm/imx/dw_hdmi-imx.c b/drivers/gpu/drm/imx/dw_hdmi-imx.c
index 121d30ca2d44..87fe8ed92ebe 100644
--- a/drivers/gpu/drm/imx/dw_hdmi-imx.c
+++ b/drivers/gpu/drm/imx/dw_hdmi-imx.c
@@ -70,7 +70,9 @@ static const struct dw_hdmi_curr_ctrl imx_cur_ctr[] = {
                 118800000, { 0x091c, 0x091c, 0x06dc },
         }, {
                 216000000, { 0x06dc, 0x0b5c, 0x091c },
-        }
+        }, {
+                ~0UL, { 0x0000, 0x0000, 0x0000 },
+        },
 };
 
 static const struct dw_hdmi_sym_term imx_sym_term[] = {
@@ -136,11 +138,34 @@ static struct drm_encoder_funcs dw_hdmi_imx_encoder_funcs = {
         .destroy = drm_encoder_cleanup,
 };
 
+static enum drm_mode_status imx6q_hdmi_mode_valid(struct drm_connector *con,
+                                                  struct drm_display_mode *mode)
+{
+        if (mode->clock < 13500)
+                return MODE_CLOCK_LOW;
+        if (mode->clock > 266000)
+                return MODE_CLOCK_HIGH;
+
+        return MODE_OK;
+}
+
+static enum drm_mode_status imx6dl_hdmi_mode_valid(struct drm_connector *con,
+                                                   struct drm_display_mode *mode)
+{
+        if (mode->clock < 13500)
+                return MODE_CLOCK_LOW;
+        if (mode->clock > 270000)
+                return MODE_CLOCK_HIGH;
+
+        return MODE_OK;
+}
+
 static struct dw_hdmi_plat_data imx6q_hdmi_drv_data = {
-        .mpll_cfg = imx_mpll_cfg,
-        .cur_ctr  = imx_cur_ctr,
-        .sym_term = imx_sym_term,
-        .dev_type = IMX6Q_HDMI,
+        .mpll_cfg   = imx_mpll_cfg,
+        .cur_ctr    = imx_cur_ctr,
+        .sym_term   = imx_sym_term,
+        .dev_type   = IMX6Q_HDMI,
+        .mode_valid = imx6q_hdmi_mode_valid,
 };
 
 static struct dw_hdmi_plat_data imx6dl_hdmi_drv_data = {
@@ -148,6 +173,7 @@ static struct dw_hdmi_plat_data imx6dl_hdmi_drv_data = {
         .cur_ctr  = imx_cur_ctr,
         .sym_term = imx_sym_term,
         .dev_type = IMX6DL_HDMI,
+        .mode_valid = imx6dl_hdmi_mode_valid,
 };
 
 static const struct of_device_id dw_hdmi_imx_dt_ids[] = {