It seems that no other test has claimed gpio_a:7 yet, so use that.
The only small wrinkle is modifying the existing wdt test to use uclass_get_device_by_driver() since we now have two UCLASS_WDT instances in play, so it's a little more robust to fetch the device by driver and not merely uclass+index.
Reviewed-by: Simon Glass sjg@chromium.org Reviewed-by: Stefan Roese sr@denx.de Signed-off-by: Rasmus Villemoes rasmus.villemoes@prevas.dk --- arch/sandbox/dts/test.dts | 6 ++++++ configs/sandbox64_defconfig | 1 + configs/sandbox_defconfig | 1 + test/dm/wdt.c | 36 +++++++++++++++++++++++++++++++++++- 4 files changed, 43 insertions(+), 1 deletion(-)
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts index d5976318d1..fe5ac6ecd9 100644 --- a/arch/sandbox/dts/test.dts +++ b/arch/sandbox/dts/test.dts @@ -779,6 +779,12 @@ }; };
+ gpio-wdt { + gpios = <&gpio_a 7 0>; + compatible = "linux,wdt-gpio"; + always-running; + }; + mbox: mbox { compatible = "sandbox,mbox"; #mbox-cells = <1>; diff --git a/configs/sandbox64_defconfig b/configs/sandbox64_defconfig index 3627a066b4..6cad90b03e 100644 --- a/configs/sandbox64_defconfig +++ b/configs/sandbox64_defconfig @@ -225,6 +225,7 @@ CONFIG_SPLASH_SCREEN_ALIGN=y CONFIG_VIDEO_BMP_RLE8=y # CONFIG_WATCHDOG_AUTOSTART is not set CONFIG_WDT=y +CONFIG_WDT_GPIO=y CONFIG_WDT_SANDBOX=y CONFIG_FS_CBFS=y CONFIG_FS_CRAMFS=y diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig index 34b749b47b..4a8b4f220d 100644 --- a/configs/sandbox_defconfig +++ b/configs/sandbox_defconfig @@ -284,6 +284,7 @@ CONFIG_W1_EEPROM=y CONFIG_W1_EEPROM_SANDBOX=y # CONFIG_WATCHDOG_AUTOSTART is not set CONFIG_WDT=y +CONFIG_WDT_GPIO=y CONFIG_WDT_SANDBOX=y CONFIG_FS_CBFS=y CONFIG_FS_CRAMFS=y diff --git a/test/dm/wdt.c b/test/dm/wdt.c index 24b991dff6..abff853a02 100644 --- a/test/dm/wdt.c +++ b/test/dm/wdt.c @@ -6,6 +6,7 @@ #include <common.h> #include <dm.h> #include <wdt.h> +#include <asm/gpio.h> #include <asm/state.h> #include <asm/test.h> #include <dm/test.h> @@ -19,7 +20,8 @@ static int dm_test_wdt_base(struct unit_test_state *uts) struct udevice *dev; const u64 timeout = 42;
- ut_assertok(uclass_get_device(UCLASS_WDT, 0, &dev)); + ut_assertok(uclass_get_device_by_driver(UCLASS_WDT, + DM_DRIVER_GET(wdt_sandbox), &dev)); ut_assertnonnull(dev); ut_asserteq(0, state->wdt.counter); ut_asserteq(false, state->wdt.running); @@ -39,3 +41,35 @@ static int dm_test_wdt_base(struct unit_test_state *uts) return 0; } DM_TEST(dm_test_wdt_base, UT_TESTF_SCAN_PDATA | UT_TESTF_SCAN_FDT); + +static int dm_test_wdt_gpio(struct unit_test_state *uts) +{ + /* + * The sandbox wdt gpio is "connected" to gpio bank a, offset + * 7. Use the sandbox back door to verify that the gpio-wdt + * driver behaves as expected. + */ + struct udevice *wdt, *gpio; + const u64 timeout = 42; + const int offset = 7; + int val; + + ut_assertok(uclass_get_device_by_driver(UCLASS_WDT, + DM_DRIVER_GET(wdt_gpio), &wdt)); + ut_assertnonnull(wdt); + + ut_assertok(uclass_get_device_by_name(UCLASS_GPIO, "base-gpios", &gpio)); + ut_assertnonnull(gpio); + ut_assertok(wdt_start(wdt, timeout, 0)); + + val = sandbox_gpio_get_value(gpio, offset); + ut_assertok(wdt_reset(wdt)); + ut_asserteq(!val, sandbox_gpio_get_value(gpio, offset)); + ut_assertok(wdt_reset(wdt)); + ut_asserteq(val, sandbox_gpio_get_value(gpio, offset)); + + ut_asserteq(-ENOSYS, wdt_stop(wdt)); + + return 0; +} +DM_TEST(dm_test_wdt_gpio, UT_TESTF_SCAN_FDT);