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	It returns the rate which will be set if you ask clk_set_rate() to set that rate. It provides a way to query exactly what rate you'll get if you call clk_set_rate() with that same argument. So essentially, clk_round_rate() and clk_set_rate() are equivalent except the former does not modify the clock hardware in any way. Signed-off-by: Dario Binacchi <dariobin@libero.it> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Sean Anderson <seanga2@gmail.com>
		
			
				
	
	
		
			225 lines
		
	
	
		
			8.2 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			225 lines
		
	
	
		
			8.2 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
// SPDX-License-Identifier: GPL-2.0+
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/*
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 * Copyright (C) 2015 Google, Inc
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 */
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#include <common.h>
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#include <clk.h>
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#include <dm.h>
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#include <log.h>
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#include <malloc.h>
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#include <asm/clk.h>
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#include <dm/test.h>
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#include <dm/device-internal.h>
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#include <linux/err.h>
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#include <test/test.h>
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#include <test/ut.h>
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/* Base test of the clk uclass */
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static int dm_test_clk_base(struct unit_test_state *uts)
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{
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	struct udevice *dev;
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	struct clk clk_method1;
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	struct clk clk_method2;
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	/* Get the device using the clk device */
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	ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "clk-test", &dev));
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	/* Get the same clk port in 2 different ways and compare */
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	ut_assertok(clk_get_by_index(dev, 1, &clk_method1));
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	ut_assertok(clk_get_by_index_nodev(dev_ofnode(dev), 1, &clk_method2));
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	ut_asserteq(clk_is_match(&clk_method1, &clk_method2), true);
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	ut_asserteq(clk_method1.id, clk_method2.id);
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	return 0;
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}
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DM_TEST(dm_test_clk_base, UT_TESTF_SCAN_FDT);
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static int dm_test_clk(struct unit_test_state *uts)
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{
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	struct udevice *dev_fixed, *dev_fixed_factor, *dev_clk, *dev_test;
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	ulong rate;
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	ut_assertok(uclass_get_device_by_name(UCLASS_CLK, "clk-fixed",
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					      &dev_fixed));
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	ut_assertok(uclass_get_device_by_name(UCLASS_CLK, "clk-fixed-factor",
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					      &dev_fixed_factor));
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	ut_assertok(uclass_get_device_by_name(UCLASS_CLK, "clk-sbox",
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					      &dev_clk));
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	ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
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	ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
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	ut_asserteq(0, sandbox_clk_query_rate(dev_clk, SANDBOX_CLK_ID_SPI));
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	ut_asserteq(0, sandbox_clk_query_rate(dev_clk, SANDBOX_CLK_ID_I2C));
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	ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "clk-test",
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					      &dev_test));
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	ut_assertok(sandbox_clk_test_get(dev_test));
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	ut_assertok(sandbox_clk_test_devm_get(dev_test));
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	ut_assertok(sandbox_clk_test_valid(dev_test));
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	ut_asserteq(0, sandbox_clk_test_get_rate(dev_test,
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						 SANDBOX_CLK_TEST_ID_DEVM_NULL));
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	ut_asserteq(0, sandbox_clk_test_set_rate(dev_test,
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						 SANDBOX_CLK_TEST_ID_DEVM_NULL,
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						 0));
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	ut_asserteq(0, sandbox_clk_test_enable(dev_test,
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					       SANDBOX_CLK_TEST_ID_DEVM_NULL));
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	ut_asserteq(0, sandbox_clk_test_disable(dev_test,
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						SANDBOX_CLK_TEST_ID_DEVM_NULL));
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	ut_asserteq(1234,
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		    sandbox_clk_test_get_rate(dev_test,
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					      SANDBOX_CLK_TEST_ID_FIXED));
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	ut_asserteq(0, sandbox_clk_test_get_rate(dev_test,
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						 SANDBOX_CLK_TEST_ID_SPI));
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	ut_asserteq(0, sandbox_clk_test_get_rate(dev_test,
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						 SANDBOX_CLK_TEST_ID_I2C));
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	ut_asserteq(321, sandbox_clk_test_get_rate(dev_test,
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						   SANDBOX_CLK_TEST_ID_DEVM1));
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	ut_asserteq(0, sandbox_clk_test_get_rate(dev_test,
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						 SANDBOX_CLK_TEST_ID_DEVM2));
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	rate = sandbox_clk_test_set_rate(dev_test, SANDBOX_CLK_TEST_ID_FIXED,
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					 12345);
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	ut_assert(IS_ERR_VALUE(rate));
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	rate = sandbox_clk_test_get_rate(dev_test, SANDBOX_CLK_TEST_ID_FIXED);
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	ut_asserteq(1234, rate);
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	ut_asserteq(0, sandbox_clk_test_set_rate(dev_test,
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						 SANDBOX_CLK_TEST_ID_SPI,
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						 1000));
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	ut_asserteq(0, sandbox_clk_test_set_rate(dev_test,
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						 SANDBOX_CLK_TEST_ID_I2C,
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						 2000));
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	ut_asserteq(1000, sandbox_clk_test_get_rate(dev_test,
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						    SANDBOX_CLK_TEST_ID_SPI));
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	ut_asserteq(2000, sandbox_clk_test_get_rate(dev_test,
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						    SANDBOX_CLK_TEST_ID_I2C));
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	ut_asserteq(1000, sandbox_clk_test_set_rate(dev_test,
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						    SANDBOX_CLK_TEST_ID_SPI,
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						    10000));
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	ut_asserteq(2000, sandbox_clk_test_set_rate(dev_test,
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						    SANDBOX_CLK_TEST_ID_I2C,
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						    20000));
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	rate = sandbox_clk_test_set_rate(dev_test, SANDBOX_CLK_TEST_ID_SPI, 0);
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	ut_assert(IS_ERR_VALUE(rate));
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	rate = sandbox_clk_test_set_rate(dev_test, SANDBOX_CLK_TEST_ID_I2C, 0);
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	ut_assert(IS_ERR_VALUE(rate));
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	ut_asserteq(10000, sandbox_clk_test_get_rate(dev_test,
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						     SANDBOX_CLK_TEST_ID_SPI));
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	ut_asserteq(20000, sandbox_clk_test_get_rate(dev_test,
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						     SANDBOX_CLK_TEST_ID_I2C));
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	ut_asserteq(5000, sandbox_clk_test_round_rate(dev_test,
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						      SANDBOX_CLK_TEST_ID_SPI,
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						      5000));
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	ut_asserteq(7000, sandbox_clk_test_round_rate(dev_test,
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						      SANDBOX_CLK_TEST_ID_I2C,
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						      7000));
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	ut_asserteq(10000, sandbox_clk_test_get_rate(dev_test,
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						     SANDBOX_CLK_TEST_ID_SPI));
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	ut_asserteq(20000, sandbox_clk_test_get_rate(dev_test,
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						     SANDBOX_CLK_TEST_ID_I2C));
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	rate = sandbox_clk_test_round_rate(dev_test, SANDBOX_CLK_TEST_ID_SPI, 0);
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	ut_assert(IS_ERR_VALUE(rate));
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	rate = sandbox_clk_test_round_rate(dev_test, SANDBOX_CLK_TEST_ID_I2C, 0);
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	ut_assert(IS_ERR_VALUE(rate));
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	ut_asserteq(10000, sandbox_clk_test_get_rate(dev_test,
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						     SANDBOX_CLK_TEST_ID_SPI));
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	ut_asserteq(20000, sandbox_clk_test_get_rate(dev_test,
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						     SANDBOX_CLK_TEST_ID_I2C));
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	ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
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	ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
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	ut_asserteq(10000, sandbox_clk_query_rate(dev_clk, SANDBOX_CLK_ID_SPI));
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	ut_asserteq(20000, sandbox_clk_query_rate(dev_clk, SANDBOX_CLK_ID_I2C));
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	ut_assertok(sandbox_clk_test_enable(dev_test, SANDBOX_CLK_TEST_ID_SPI));
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	ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
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	ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
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	ut_assertok(sandbox_clk_test_enable(dev_test, SANDBOX_CLK_TEST_ID_I2C));
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	ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
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	ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
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	ut_assertok(sandbox_clk_test_disable(dev_test,
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					     SANDBOX_CLK_TEST_ID_SPI));
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	ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
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	ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
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	ut_assertok(sandbox_clk_test_disable(dev_test,
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					     SANDBOX_CLK_TEST_ID_I2C));
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	ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
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	ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
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	ut_asserteq(1, sandbox_clk_query_requested(dev_clk,
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						   SANDBOX_CLK_ID_SPI));
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	ut_asserteq(1, sandbox_clk_query_requested(dev_clk,
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						   SANDBOX_CLK_ID_I2C));
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	ut_asserteq(1, sandbox_clk_query_requested(dev_clk,
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						   SANDBOX_CLK_ID_UART2));
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	ut_assertok(sandbox_clk_test_free(dev_test));
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	ut_asserteq(0, sandbox_clk_query_requested(dev_clk,
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						   SANDBOX_CLK_ID_SPI));
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	ut_asserteq(0, sandbox_clk_query_requested(dev_clk,
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						   SANDBOX_CLK_ID_I2C));
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	ut_asserteq(0, sandbox_clk_query_requested(dev_clk,
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						   SANDBOX_CLK_ID_UART2));
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	ut_asserteq(1, sandbox_clk_query_requested(dev_clk,
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						   SANDBOX_CLK_ID_UART1));
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	ut_assertok(device_remove(dev_test, DM_REMOVE_NORMAL));
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	ut_asserteq(0, sandbox_clk_query_requested(dev_clk,
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						   SANDBOX_CLK_ID_UART1));
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	return 0;
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}
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DM_TEST(dm_test_clk, UT_TESTF_SCAN_FDT);
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static int dm_test_clk_bulk(struct unit_test_state *uts)
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{
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	struct udevice *dev_clk, *dev_test;
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	ut_assertok(uclass_get_device_by_name(UCLASS_CLK, "clk-sbox",
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					      &dev_clk));
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	ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "clk-test",
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					      &dev_test));
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	ut_assertok(sandbox_clk_test_get_bulk(dev_test));
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	ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
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	ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
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	/* Fixed clock does not support enable, thus should not fail */
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	ut_assertok(sandbox_clk_test_enable_bulk(dev_test));
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	ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
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	ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
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	/* Fixed clock does not support disable, thus should not fail */
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	ut_assertok(sandbox_clk_test_disable_bulk(dev_test));
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	ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
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	ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
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	/* Fixed clock does not support enable, thus should not fail */
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	ut_assertok(sandbox_clk_test_enable_bulk(dev_test));
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	ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
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	ut_asserteq(1, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
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	/* Fixed clock does not support disable, thus should not fail */
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	ut_assertok(sandbox_clk_test_release_bulk(dev_test));
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	ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_SPI));
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	ut_asserteq(0, sandbox_clk_query_enable(dev_clk, SANDBOX_CLK_ID_I2C));
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	ut_assertok(device_remove(dev_test, DM_REMOVE_NORMAL));
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	return 0;
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}
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DM_TEST(dm_test_clk_bulk, UT_TESTF_SCAN_FDT);
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