diff --git a/drivers/gpu/drm/drm_encoder_slave.c b/drivers/gpu/drm/drm_encoder_slave.c
index f0184696edf3..d62c064fbaa0 100644
--- a/drivers/gpu/drm/drm_encoder_slave.c
+++ b/drivers/gpu/drm/drm_encoder_slave.c
@@ -41,6 +41,9 @@
  * &drm_encoder_slave. The @slave_funcs field will be initialized with
  * the hooks provided by the slave driver.
  *
+ * If @info->platform_data is non-NULL it will be used as the initial
+ * slave config.
+ *
  * Returns 0 on success or a negative errno on failure, in particular,
  * -ENODEV is returned when no matching driver is found.
  */
@@ -85,6 +88,10 @@ int drm_i2c_encoder_init(struct drm_device *dev,
 	if (err)
 		goto fail_unregister;
 
+	if (info->platform_data)
+		encoder->slave_funcs->set_config(&encoder->base,
+						 info->platform_data);
+
 	return 0;
 
 fail_unregister: