[PATCH 2/2] dm: test: clk: Add test for ccf clk_set_rate()

[Igor Prusov]

Add a simple test case which sets clock rate to its current value.

Signed-off-by: Igor Prusov <ivprusov at salutedevices.com>
---

 test/dm/clk_ccf.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/test/dm/clk_ccf.c b/test/dm/clk_ccf.c
index e4ebb93cda..3b23982541 100644
--- a/test/dm/clk_ccf.c
+++ b/test/dm/clk_ccf.c
@@ -63,6 +63,9 @@ static int dm_test_clk_ccf(struct unit_test_state *uts)
 	rate = clk_get_parent_rate(clk);
 	ut_asserteq(rate, 60000000);
 
+	rate = clk_set_rate(clk, 60000000);
+	ut_asserteq(rate, -ENOSYS);
+
 	rate = clk_get_rate(clk);
 	ut_asserteq(rate, 60000000);
 
@@ -87,6 +90,9 @@ static int dm_test_clk_ccf(struct unit_test_state *uts)
 	ut_asserteq_str("pll3_80m", pclk->dev->name);
 	ut_asserteq(CLK_SET_RATE_PARENT, pclk->flags);
 
+	rate = clk_set_rate(clk, 80000000);
+	ut_asserteq(rate, -ENOSYS);
+
 	rate = clk_get_rate(clk);
 	ut_asserteq(rate, 80000000);
 
@@ -108,6 +114,9 @@ static int dm_test_clk_ccf(struct unit_test_state *uts)
 	rate = clk_get_rate(clk);
 	ut_asserteq(rate, 60000000);
 
+	rate = clk_set_rate(clk, 60000000);
+	ut_asserteq(rate, 60000000);
+
 #if CONFIG_IS_ENABLED(CLK_CCF)
 	/* Test clk tree enable/disable */
 	ret = clk_get_by_id(SANDBOX_CLK_I2C_ROOT, &clk);
-- 
2.34.1