of: Add self test for of_match_node()

Adds a selftest function for the of_match_node function. of_match_node
is supposed to handle precedence for the compatible property as well as
the name and device_type values. This patch adds some test case data and
a function that makes sure each test node matches against the correct
entry of an of_device_id table.

This code was written to verify the new of_match_node() implementation
that is an earlier part of this series.

Signed-off-by: Grant Likely <grant.likely@linaro.org>
Cc: Kevin Hao <haokexin@gmail.com>

2 files changed, 20 insertions, 0 deletions

diff --git a/drivers/of/testcase-data/testcases.dtsi b/drivers/of/testcase-data/testcases.dtsi
index 3cc2f55534ac..3a5b75a8e4d7 100644
--- a/drivers/of/testcase-data/testcases.dtsi
+++ b/drivers/of/testcase-data/testcases.dtsi
@@ -1,2 +1,3 @@
 #include "tests-phandle.dtsi"
 #include "tests-interrupts.dtsi"
+#include "tests-match.dtsi"
diff --git a/drivers/of/testcase-data/tests-match.dtsi b/drivers/of/testcase-data/tests-match.dtsi
new file mode 100644
index 000000000000..c9e541129534
--- /dev/null
+++ b/drivers/of/testcase-data/tests-match.dtsi
@@ -0,0 +1,19 @@
+
+/ {
+        testcase-data {
+                match-node {
+                        name0 { };
+                        name1 { device_type = "type1"; };
+                        a { name2 { device_type = "type1"; }; };
+                        b { name2 { }; };
+                        c { name2 { device_type = "type2"; }; };
+                        name3 { compatible = "compat3"; };
+                        name4 { compatible = "compat2", "compat3"; };
+                        name5 { compatible = "compat2", "compat3"; };
+                        name6 { compatible = "compat1", "compat2", "compat3"; };
+                        name7 { compatible = "compat2"; device_type = "type1"; };
+                        name8 { compatible = "compat2"; device_type = "type1"; };
+                        name9 { compatible = "compat2"; };
+                };
+        };
+};