From: Yang Xiwen <[email protected]> Add a test for the newly introduced CLK_LAZY_PARENT feature.
Modify clk_sandbox_ccf driver to register two clocks(i2s and i2s_root) in reversed order. The test function then try to acquire the clocks and asserts that their internal states are maintained correctly. Signed-off-by: Yang Xiwen <[email protected]> --- drivers/clk/clk_sandbox_ccf.c | 10 ++++++++++ include/sandbox-clk.h | 2 ++ test/dm/clk_ccf.c | 29 +++++++++++++++++++++++++++++ 3 files changed, 41 insertions(+) diff --git a/drivers/clk/clk_sandbox_ccf.c b/drivers/clk/clk_sandbox_ccf.c index f96a15c30b3a..3a11b361cd2b 100644 --- a/drivers/clk/clk_sandbox_ccf.c +++ b/drivers/clk/clk_sandbox_ccf.c @@ -229,6 +229,7 @@ static const struct udevice_id sandbox_clk_ccf_test_ids[] = { static const char *const usdhc_sels[] = { "pll3_60m", "pll3_80m", }; static const char *const i2c_sels[] = { "pll3_60m", "pll3_80m", }; +static const char *const i2s_sels[] = { "pll3_60m", "pll3_80m", }; static int sandbox_clk_ccf_probe(struct udevice *dev) { @@ -277,6 +278,15 @@ static int sandbox_clk_ccf_probe(struct udevice *dev) clk_dm(SANDBOX_CLK_I2C_ROOT, sandbox_clk_gate2("i2c_root", "i2c", base + 0x7c, 0)); + /* Register i2s_root(child) and i2s(parent) in reverse order to test CLK_LAZY_REPARENT */ + clk_dm(SANDBOX_CLK_I2S_ROOT, + sandbox_clk_gate2("i2s_root", "i2s", base + 0x80, 0)); + + reg = BIT(29) | BIT(25) | BIT(17); + clk_dm(SANDBOX_CLK_I2S, + sandbox_clk_composite("i2s", i2s_sels, ARRAY_SIZE(i2s_sels), + ®, CLK_SET_RATE_UNGATE)); + return 0; } diff --git a/include/sandbox-clk.h b/include/sandbox-clk.h index c2616c27a44a..0cd735e3ad5f 100644 --- a/include/sandbox-clk.h +++ b/include/sandbox-clk.h @@ -21,6 +21,8 @@ enum { SANDBOX_CLK_USDHC2_SEL, SANDBOX_CLK_I2C, SANDBOX_CLK_I2C_ROOT, + SANDBOX_CLK_I2S, + SANDBOX_CLK_I2S_ROOT, }; enum sandbox_pllv3_type { diff --git a/test/dm/clk_ccf.c b/test/dm/clk_ccf.c index ac56f17b775d..c4c1b6ba758a 100644 --- a/test/dm/clk_ccf.c +++ b/test/dm/clk_ccf.c @@ -209,3 +209,32 @@ static int dm_test_clk_ccf(struct unit_test_state *uts) return 1; } DM_TEST(dm_test_clk_ccf, UTF_SCAN_FDT); + +#if CONFIG_IS_ENABLED(CLK_LAZY_REPARENT) +/* Test CLK_LAZY_REPARENT feature */ +static int dm_test_clk_lazy_reparent(struct unit_test_state *uts) +{ + struct udevice *dev; + struct clk *clk_i2s, *clk_i2s_root; + int ret; + + /* Get the device using the clk device */ + ut_assertok(uclass_get_device_by_name(UCLASS_CLK, "clk-ccf", &dev)); + + ret = clk_get_by_id(SANDBOX_CLK_I2S_ROOT, &clk_i2s_root); + ret |= clk_get_by_id(SANDBOX_CLK_I2S, &clk_i2s); + ut_assertok(ret); + + ut_asserteq_str(clk_i2s_root->parent_name, "i2s"); + ut_assertnull(clk_i2s_root->dev->parent); + + ret = clk_enable(clk_i2s_root); + ut_assertok(ret); + + ut_assertnull(clk_i2s_root->parent_name); + ut_asserteq_ptr(clk_i2s_root->dev->parent, clk_i2s->dev); + + return 0; +} +DM_TEST(dm_test_clk_lazy_reparent, UTF_SCAN_FDT); +#endif -- 2.43.0
