diff --git a/dom/webidl/HTMLInputElement.webidl b/dom/webidl/HTMLInputElement.webidl
index 050d195107..b2546fccac 100644
--- a/dom/webidl/HTMLInputElement.webidl
+++ b/dom/webidl/HTMLInputElement.webidl
@@ -238,6 +238,9 @@ partial interface HTMLInputElement {
 dictionary DateTimeValue {
   long hour;
   long minute;
+  long year;
+  long month;
+  long day;
 };
 
 partial interface HTMLInputElement {
diff --git a/toolkit/content/browser-content.js b/toolkit/content/browser-content.js
index 4ae798fbdc..731b551857 100644
--- a/toolkit/content/browser-content.js
+++ b/toolkit/content/browser-content.js
@@ -1737,6 +1737,7 @@ let DateTimePickerListener = {
       }
       case "MozUpdateDateTimePicker": {
         let value = this._inputElement.getDateTimeInputBoxValue();
+        value.type = this._inputElement.type;
         sendAsyncMessage("FormDateTime:UpdatePicker", { value });
         break;
       }
diff --git a/toolkit/content/widgets/datetimebox.xml b/toolkit/content/widgets/datetimebox.xml
index 677d3fc21b..5859f80dd1 100644
--- a/toolkit/content/widgets/datetimebox.xml
+++ b/toolkit/content/widgets/datetimebox.xml
@@ -199,10 +199,24 @@
       </method>
 
       <method name="setFieldsFromPicker">
+        <parameter name="aValue"/>
         <body>
         <![CDATA[
-          // TODO: Bug 1320225 - [DateTimeInput] Integration of input type=date
-          // input box with picker.
+          let year = aValue.year;
+          let month = aValue.month;
+          let day = aValue.day;
+
+          if (!this.isEmpty(year)) {
+            this.setFieldValue(this.mYearField, year);
+          }
+
+          if (!this.isEmpty(month)) {
+            this.setFieldValue(this.mMonthField, month);
+          }
+
+          if (!this.isEmpty(day)) {
+            this.setFieldValue(this.mDayField, day);
+          }
         ]]>
         </body>
       </method>
diff --git a/toolkit/modules/DateTimePickerHelper.jsm b/toolkit/modules/DateTimePickerHelper.jsm
index 8ad5204f45..769ae0094c 100644
--- a/toolkit/modules/DateTimePickerHelper.jsm
+++ b/toolkit/modules/DateTimePickerHelper.jsm
@@ -97,13 +97,10 @@ this.DateTimePickerHelper = {
 
   // Called when picker value has changed, notify input box about it.
   updateInputBoxValue: function(aEvent) {
-    // TODO: parse data based on input type.
-    const { hour, minute } = aEvent.detail;
-    debug("hour: " + hour + ", minute: " + minute);
     let browser = this.weakBrowser ? this.weakBrowser.get() : null;
     if (browser) {
       browser.messageManager.sendAsyncMessage(
-        "FormDateTime:PickerValueChanged", { hour, minute });
+        "FormDateTime:PickerValueChanged", aEvent.detail);
     }
   },
 
