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| author | Sean Anderson <seanga2@gmail.com> | 2020-06-24 06:41:12 -0400 |
|---|---|---|
| committer | Andes <uboot@andestech.com> | 2020-07-01 15:01:21 +0800 |
| commit | 4a3390f1d3b71f0645eb281176f00cd0d5ac2dcb (patch) | |
| tree | 373138fe61aea783757084532eb3c7c3111ee285 /test | |
| parent | f9c7d4f99f51ac9c1cf513111c21395f93d2dd53 (diff) | |
| download | u-boot-4a3390f1d3b71f0645eb281176f00cd0d5ac2dcb.zip u-boot-4a3390f1d3b71f0645eb281176f00cd0d5ac2dcb.tar.gz u-boot-4a3390f1d3b71f0645eb281176f00cd0d5ac2dcb.tar.bz2 | |
dm: Add support for simple-pm-bus
This type of bus is used in Linux to designate buses which have power
domains and/or clocks which need to be enabled before their child devices
can be used. Because power domains are automatically enabled before probing
in U-Boot, we just need to enable any clocks present.
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'test')
| -rw-r--r-- | test/dm/Makefile | 1 | ||||
| -rw-r--r-- | test/dm/simple-pm-bus.c | 45 |
2 files changed, 46 insertions, 0 deletions
diff --git a/test/dm/Makefile b/test/dm/Makefile index 5094a78..518ee8e 100644 --- a/test/dm/Makefile +++ b/test/dm/Makefile @@ -74,4 +74,5 @@ obj-$(CONFIG_DM_MDIO) += mdio.o obj-$(CONFIG_DM_MDIO_MUX) += mdio_mux.o obj-$(CONFIG_DM_RNG) += rng.o obj-$(CONFIG_CLK_K210_SET_RATE) += k210_pll.o +obj-$(CONFIG_SIMPLE_PM_BUS) += simple-pm-bus.o endif diff --git a/test/dm/simple-pm-bus.c b/test/dm/simple-pm-bus.c new file mode 100644 index 0000000..978c7f1 --- /dev/null +++ b/test/dm/simple-pm-bus.c @@ -0,0 +1,45 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2020 Sean Anderson <seanga2@gmail.com> + */ + +#include <common.h> +#include <dm.h> +#include <dm/test.h> +#include <dm/device-internal.h> +#include <test/ut.h> +#include <asm/clk.h> +#include <asm/power-domain.h> + +/* These must match the ids in the device tree */ +#define TEST_CLOCK_ID 4 +#define TEST_POWER_ID 1 + +static int dm_test_simple_pm_bus(struct unit_test_state *uts) +{ + struct udevice *power; + struct udevice *clock; + struct udevice *bus; + + ut_assertok(uclass_get_device_by_name(UCLASS_POWER_DOMAIN, + "power-domain", &power)); + ut_assertok(uclass_get_device_by_name(UCLASS_CLK, "clk-sbox", + &clock)); + ut_asserteq(0, sandbox_power_domain_query(power, TEST_POWER_ID)); + ut_asserteq(0, sandbox_clk_query_enable(clock, TEST_CLOCK_ID)); + + ut_assertok(uclass_get_device_by_name(UCLASS_SIMPLE_BUS, "pm-bus-test", + &bus)); + ut_asserteq(1, sandbox_power_domain_query(power, TEST_POWER_ID)); + ut_asserteq(1, sandbox_clk_query_enable(clock, TEST_CLOCK_ID)); + + ut_assertok(device_remove(bus, DM_REMOVE_NORMAL)); + /* must re-probe since device_remove also removes the power domain */ + ut_assertok(uclass_get_device_by_name(UCLASS_POWER_DOMAIN, + "power-domain", &power)); + ut_asserteq(0, sandbox_power_domain_query(power, TEST_POWER_ID)); + ut_asserteq(0, sandbox_clk_query_enable(clock, TEST_CLOCK_ID)); + + return 0; +} +DM_TEST(dm_test_simple_pm_bus, DM_TESTF_SCAN_FDT); |