diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index 6b81a36..1a13f5b 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -11,6 +11,7 @@
 	bool "Device Tree Runtime self tests"
 	depends on OF_IRQ && OF_EARLY_FLATTREE
 	select OF_DYNAMIC
+	select OF_RESOLVE
 	help
 	  This option builds in test cases for the device tree infrastructure
 	  that are executed once at boot time, and the results dumped to the
diff --git a/drivers/of/selftest.c b/drivers/of/selftest.c
index 4f83e97..4fed34b 100644
--- a/drivers/of/selftest.c
+++ b/drivers/of/selftest.c
@@ -25,7 +25,7 @@
 	int failed;
 } selftest_results;
 
-#define NO_OF_NODES 2
+#define NO_OF_NODES 3
 static struct device_node *nodes[NO_OF_NODES];
 static int last_node_index;
 static bool selftest_live_tree;
@@ -765,6 +765,7 @@
 	extern uint8_t __dtb_testcases_begin[];
 	extern uint8_t __dtb_testcases_end[];
 	const int size = __dtb_testcases_end - __dtb_testcases_begin;
+	int rc;
 
 	if (!size) {
 		pr_warn("%s: No testcase data to attach; not running tests\n",
@@ -785,6 +786,12 @@
 		pr_warn("%s: No tree to attach; not running tests\n", __func__);
 		return -ENODATA;
 	}
+	of_node_set_flag(selftest_data_node, OF_DETACHED);
+	rc = of_resolve_phandles(selftest_data_node);
+	if (rc) {
+		pr_err("%s: Failed to resolve phandles (rc=%i)\n", __func__, rc);
+		return -EINVAL;
+	}
 
 	if (!of_allnodes) {
 		/* enabling flag for removing nodes */
diff --git a/drivers/of/testcase-data/testcases.dts b/drivers/of/testcase-data/testcases.dts
index 219ef93..6994e15 100644
--- a/drivers/of/testcase-data/testcases.dts
+++ b/drivers/of/testcase-data/testcases.dts
@@ -13,3 +13,38 @@
 #include "tests-interrupts.dtsi"
 #include "tests-match.dtsi"
 #include "tests-platform.dtsi"
+
+/*
+ * phandle fixup data - generated by dtc patches that aren't upstream.
+ * This data must be regenerated whenever phandle references are modified in
+ * the testdata tree.
+ *
+ * The format of this data may be subject to change. For the time being consider
+ * this a kernel-internal data format.
+ */
+/ { __local_fixups__ {
+	fixup = "/testcase-data/testcase-device2:interrupt-parent:0",
+		"/testcase-data/testcase-device1:interrupt-parent:0",
+		"/testcase-data/interrupts/interrupts-extended0:interrupts-extended:60",
+		"/testcase-data/interrupts/interrupts-extended0:interrupts-extended:52",
+		"/testcase-data/interrupts/interrupts-extended0:interrupts-extended:44",
+		"/testcase-data/interrupts/interrupts-extended0:interrupts-extended:36",
+		"/testcase-data/interrupts/interrupts-extended0:interrupts-extended:24",
+		"/testcase-data/interrupts/interrupts-extended0:interrupts-extended:8",
+		"/testcase-data/interrupts/interrupts-extended0:interrupts-extended:0",
+		"/testcase-data/interrupts/interrupts1:interrupt-parent:0",
+		"/testcase-data/interrupts/interrupts0:interrupt-parent:0",
+		"/testcase-data/interrupts/intmap1:interrupt-map:12",
+		"/testcase-data/interrupts/intmap0:interrupt-map:52",
+		"/testcase-data/interrupts/intmap0:interrupt-map:36",
+		"/testcase-data/interrupts/intmap0:interrupt-map:16",
+		"/testcase-data/interrupts/intmap0:interrupt-map:4",
+		"/testcase-data/phandle-tests/consumer-a:phandle-list-bad-args:12",
+		"/testcase-data/phandle-tests/consumer-a:phandle-list-bad-args:0",
+		"/testcase-data/phandle-tests/consumer-a:phandle-list:56",
+		"/testcase-data/phandle-tests/consumer-a:phandle-list:52",
+		"/testcase-data/phandle-tests/consumer-a:phandle-list:40",
+		"/testcase-data/phandle-tests/consumer-a:phandle-list:24",
+		"/testcase-data/phandle-tests/consumer-a:phandle-list:8",
+		"/testcase-data/phandle-tests/consumer-a:phandle-list:0";
+}; };