diff --git a/drivers/gpu/drm/sun4i/sun4i_rgb.c b/drivers/gpu/drm/sun4i/sun4i_rgb.c
index f5bbac6..d6943e9 100644
--- a/drivers/gpu/drm/sun4i/sun4i_rgb.c
+++ b/drivers/gpu/drm/sun4i/sun4i_rgb.c
@@ -151,6 +151,7 @@ static void sun4i_rgb_encoder_enable(struct drm_encoder *encoder)

        DRM_DEBUG_DRIVER("Enabling RGB output\n");

+       drm_panel_prepare(tcon->panel);
        drm_panel_enable(tcon->panel);
        sun4i_tcon_channel_enable(tcon, 0);
 }
@@ -165,6 +166,7 @@ static void sun4i_rgb_encoder_disable(struct drm_encoder *encoder)

        sun4i_tcon_channel_disable(tcon, 0);
        drm_panel_disable(tcon->panel);
+       drm_panel_unprepare(tcon->panel);
 }

 static void sun4i_rgb_encoder_mode_set(struct drm_encoder *encoder,