diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index 7f56d8c3491daccda86c3156b60dde8d4a43ee34..fecd078d7dca9e797184a679bbe2c203f43e3ed1 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -259,6 +259,8 @@ static void dw_hdmi_rockchip_encoder_mode_set(struct drm_encoder *encoder,
 {
 	struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);
 
+        printk("*** %s: adj_mode->clock * 1000 %d Hz\n", __func__, adj_mode->clock * 1000);
+
 	clk_set_rate(hdmi->vpll_clk, adj_mode->clock * 1000);
 }
 
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index d04b3492bdac2a04777eeabe41e8d087e80392a6..a3049ca1ee223d5310a4a5573c0e21b3ab78369c 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1274,6 +1274,7 @@ static void vop_crtc_atomic_enable(struct drm_crtc *crtc,
 
 	VOP_REG_SET(vop, intr, line_flag_num[0], vact_end);
 
+        printk("*** %s: adjusted_mode->clock * 1000 %d Hz\n", __func__, adjusted_mode->clock * 1000);
 	clk_set_rate(vop->dclk, adjusted_mode->clock * 1000);
 
 	VOP_REG_SET(vop, common, standby, 0);