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@@ -24,7 +24,7 @@ static int dm_test_clk_ccf(struct unit_test_state *uts)
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int ret;
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#if CONFIG_IS_ENABLED(CLK_CCF)
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const char *clkname;
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- int clkid;
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+ int clkid, i;
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#endif
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/* Get the device using the clk device */
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@@ -157,6 +157,36 @@ static int dm_test_clk_ccf(struct unit_test_state *uts)
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pclk = clk_get_parent(clk);
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ut_assertok_ptr(pclk);
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ut_asserteq_str(clkname, pclk->dev->name);
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+
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+ /* Test disabling critical clock. */
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+ ret = clk_get_by_id(SANDBOX_CLK_I2C_ROOT, &clk);
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+ ut_assertok(ret);
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+ ut_asserteq_str("i2c_root", clk->dev->name);
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+
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+ /* Disable it, if any. */
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+ ret = sandbox_clk_enable_count(clk);
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+ for (i = 0; i < ret; i++) {
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+ ret = clk_disable(clk);
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+ ut_assertok(ret);
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+ }
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+
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+ ret = sandbox_clk_enable_count(clk);
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+ ut_asserteq(ret, 0);
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+
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+ clk->flags = CLK_IS_CRITICAL;
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+ ret = clk_enable(clk);
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+ ut_assertok(ret);
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+
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+ ret = clk_disable(clk);
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+ ut_assertok(ret);
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+ ret = sandbox_clk_enable_count(clk);
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+ ut_asserteq(ret, 1);
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+ clk->flags &= ~CLK_IS_CRITICAL;
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+
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+ ret = clk_disable(clk);
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+ ut_assertok(ret);
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+ ret = sandbox_clk_enable_count(clk);
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+ ut_asserteq(ret, 0);
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#endif
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return 1;
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