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-rw-r--r--tests/device/ddr4-test.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/tests/device/ddr4-test.c b/tests/device/ddr4-test.c
new file mode 100644
index 0000000000..0a9831da75
--- /dev/null
+++ b/tests/device/ddr4-test.c
@@ -0,0 +1,41 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#include <device/dram/ddr4.h>
+#include <tests/test.h>
+
+static void ddr4_speed_mhz_to_mts_test(void **state)
+{
+ assert_int_equal(0, ddr4_speed_mhz_to_reported_mts(0));
+ assert_int_equal(0, ddr4_speed_mhz_to_reported_mts(667));
+
+ assert_int_equal(1600, ddr4_speed_mhz_to_reported_mts(668));
+ assert_int_equal(1600, ddr4_speed_mhz_to_reported_mts(800));
+
+ assert_int_equal(1866, ddr4_speed_mhz_to_reported_mts(801));
+ assert_int_equal(1866, ddr4_speed_mhz_to_reported_mts(933));
+ assert_int_equal(1866, ddr4_speed_mhz_to_reported_mts(934));
+
+ assert_int_equal(2133, ddr4_speed_mhz_to_reported_mts(1066));
+ assert_int_equal(2133, ddr4_speed_mhz_to_reported_mts(1067));
+
+ assert_int_equal(2400, ddr4_speed_mhz_to_reported_mts(1200));
+
+ assert_int_equal(2666, ddr4_speed_mhz_to_reported_mts(1333));
+
+ assert_int_equal(2933, ddr4_speed_mhz_to_reported_mts(1466));
+
+ assert_int_equal(3200, ddr4_speed_mhz_to_reported_mts(1467));
+ assert_int_equal(3200, ddr4_speed_mhz_to_reported_mts(1600));
+
+ assert_int_equal(0, ddr4_speed_mhz_to_reported_mts(1601));
+ assert_int_equal(0, ddr4_speed_mhz_to_reported_mts(INT16_MAX));
+}
+
+int main(void)
+{
+ const struct CMUnitTest tests[] = {
+ cmocka_unit_test(ddr4_speed_mhz_to_mts_test)
+ };
+
+ return cmocka_run_group_tests(tests, NULL, NULL);
+}