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Paul Doelle 1fc45d6483 watchdog: add pulse support to gpio watchdog driver 
A common external watchdog circuit is kept alive by triggering a short
pulse on the reset pin. This patch adds support for this use case, while
making the algorithm configurable in the devicetree.

The "linux,wdt-gpio" driver being modified is based off the equivalent
driver in the Linux kernel, which provides support for this algorithm.
This patch brings parity to this driver, and is kept aligned with
the functionality and devicetree configuration in the kernel.

It should be noted that this adds a required property named 'hw_algo'
to the devicetree binding, following suit with the kernel. I'm happy to
make this backward-compatible if preferred.

Signed-off-by: Paul Doelle <paaull.git@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2022-07-21 08:09:06 +02:00
..
acpi.c acpi: Tidy up the table list 2022-01-25 11:44:36 -07:00
acpi.h doc: replace @return by Return: 2022-01-19 18:11:34 +01:00
acpi_dp.c dm: acpi: Use correct GPIO polarity type in acpi_dp_add_gpio() 2020-09-25 11:27:14 +08:00
acpigen.c acpi: Add more support for generating processor tables 2020-09-25 11:27:18 +08:00
adc.c dm: treewide: Rename 'platdata' variables to just 'plat' 2020-12-13 16:51:08 -07:00
audio.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
axi.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
blk.c test: dm: Restart USB before assuming it is stopped 2022-04-25 10:00:03 -04:00
bootcount.c bootcount: add a new driver with syscon as backend 2021-08-22 11:04:52 +02:00
bus.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
button.c test: add a simple test for the adc-keys button driver 2021-02-18 11:37:26 +01:00
cache.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
clk.c clk: add clk_round_rate() 2021-01-12 10:58:04 +05:30
clk_ccf.c clk: do not disable clock if it is critical 2020-09-22 11:27:18 +03:00
core.c dm: core: Add a way to collect memory usage 2022-06-28 03:09:52 +01:00
cpu.c sandbox: correct cpu nodes 2021-09-25 09:46:15 -06:00
cros_ec.c cros_ec: Add vstore support 2021-01-30 14:25:41 -07:00
cros_ec_pwm.c sandbox: cros-ec: Add tests for the Chromium OS EC PWM driver 2021-07-06 10:38:03 -06:00
devres.c test: dm: devres: Remove use-after-free 2022-04-29 11:11:36 -04:00
dma.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
dsa.c net: update NXP copyright text 2021-09-28 18:50:56 +03:00
dsi_host.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
ecdsa.c test: dm: Add test for ECDSA UCLASS support 2021-08-16 10:49:35 +02:00
efi_media.c efi: Add uclass for devices provided by UEFI firmware 2021-12-09 11:43:25 -08:00
eth.c test: eth: Add test for ethernet addresses 2022-06-08 13:59:52 -04:00
fastboot.c test: fastboot: Avoid using mmc1 2022-04-25 10:00:03 -04:00
fdtdec.c fdtdec: Support reserved-memory flags 2021-10-13 14:18:30 -07:00
firmware.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
gpio.c gpio: Add a way to read 3-way strapping pins 2021-03-03 15:40:47 -05:00
hwspinlock.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
i2c.c i2c: add dm_i2c_reg_clrset 2021-08-22 10:52:53 +02:00
i2s.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
iommu.c test: Add tests for IOMMU uclass 2021-10-31 08:46:44 -04:00
irq.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
k210_pll.c k210: use the board vendor name rather than the marketing name 2022-03-15 17:43:11 +08:00
Kconfig test: Move the unit tests to their own menu 2015-05-21 09:16:17 -04:00
led.c test: dm: led: Fix LED enumeration 2022-04-28 09:26:44 -04:00
mailbox.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
Makefile test: fix CONFIG_ACPIGEN dependencies 2022-07-08 09:05:47 -04:00
mdio.c treewide: use dm_mdio_read/write/reset() wrappers 2022-04-10 08:44:12 +03:00
mdio_mux.c treewide: use dm_mdio_read/write/reset() wrappers 2022-04-10 08:44:12 +03:00
misc.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
mmc.c mmc: sandbox: Add support for writing 2021-02-26 15:30:55 +01:00
mux-cmd.c test: mux-cmd: Add tests for the 'mux' command 2020-10-28 11:49:31 -04:00
mux-emul.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
mux-mmio.c test: Add tests for the multiplexer framework 2020-10-28 11:49:31 -04:00
nop.c cmd: bind: Fix driver binding on a device 2021-10-12 14:19:52 +02:00
of_extra.c test: dm: Add a case to test ofnode_phy_is_fixed_link() 2021-04-15 14:22:17 +05:30
of_platdata.c doc: replace @return by Return: 2022-01-19 18:11:34 +01:00
ofnode.c net: introduce helpers to get PHY interface mode from a device/ofnode 2022-04-10 08:44:12 +03:00
ofread.c dm: treewide: Rename 'platdata' variables to just 'plat' 2020-12-13 16:51:08 -07:00
osd.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
p2sb.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
panel.c sandbox: cros-ec: Add tests for the Chromium OS EC PWM driver 2021-07-06 10:38:03 -06:00
part.c part: Add check for NULL dev_part_str 2021-05-26 17:26:07 -04:00
pch.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
pci.c pci: Add mask parameter to dm_pci_map_bar() 2022-05-03 18:33:29 -04:00
pci_ep.c WS cleanup: remove trailing empty lines 2021-09-30 08:08:56 -04:00
phy.c phy: Track power-on and init counts in uclass 2022-01-14 14:36:57 -05:00
phys2bus.c dm: test: Add test case for dev_phys_to_bus()/dev_bus_to_phys() 2021-02-18 11:56:25 +01:00
pinmux.c test: pinmux: add test for 'pinctrl-single' driver 2021-04-12 11:17:15 +05:30
pmc.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
pmic.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
power-domain.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
pwm.c sandbox: cros-ec: Add tests for the Chromium OS EC PWM driver 2021-07-06 10:38:03 -06:00
qfw.c test: qemu: add qfw sandbox driver, dm tests, qemu tests 2021-04-12 17:45:39 -04:00
ram.c common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
read.c dm: test: Add test case for dev_get_dma_ranges() 2021-02-18 11:56:25 +01:00
reboot-mode.c reboot-mode: read the boot mode from RTC memory 2021-07-23 10:16:39 -04:00
regmap.c test: Fix pointer overrun in dm_test_devm_regmap() 2022-04-29 11:11:36 -04:00
regulator.c dm: treewide: Rename 'platdata' variables to just 'plat' 2020-12-13 16:51:08 -07:00
remoteproc.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
reset.c test: reset: Extend base reset test to catch error 2021-04-27 08:07:05 -04:00
rng.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
rtc.c display_options: Drop two spaces before the ASCII column 2021-06-08 11:39:09 -04:00
scmi.c firmware: scmi: fix sandbox and related tests for clock discovery 2022-03-02 17:42:06 -05:00
serial.c test: serial: Add test for putc/puts 2022-04-14 15:39:15 -04:00
sf.c sf: Support querying write-protect 2021-03-27 15:04:31 +13:00
simple-bus.c test: dm: Add a test case for simple-bus <ranges> 2021-04-15 14:22:17 +05:30
simple-pm-bus.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
smem.c WS cleanup: remove trailing empty lines 2021-09-30 08:08:56 -04:00
soc.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
sound.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
spi.c test: dm: spi: Replace _spi_get_bus_and_cs() by spi_get_bus_and_cs() in some case 2022-05-23 09:33:10 -04:00
spmi.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
syscon-reset.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
syscon.c dm: Rename DM test flags to make them more generic 2020-08-07 22:31:32 -04:00
sysinfo-gpio.c test: Add gpio-sysinfo test 2021-05-04 07:57:18 -04:00
sysinfo.c sysinfo: Require that sysinfo_detect be called before other methods 2021-05-04 07:57:18 -04:00
sysreset.c test: adjust sysreset tests 2020-11-05 09:11:30 -07:00
tag.c test: dm: add tests for tag support 2022-04-23 22:05:34 +02:00
tee.c test: dm: tee: extend with RPC test 2021-02-16 11:48:20 -05:00
test-dm.c doc: replace @return by Return: 2022-01-19 18:11:34 +01:00
test-driver.c test: Use a local variable for test state 2021-03-12 09:57:30 -05:00
test-fdt.c sandbox: net: Add aliases for ethernet devices 2022-06-08 13:59:52 -04:00
test-uclass.c test: Use a local variable for test state 2021-03-12 09:57:30 -05:00
timer.c sandbox: correct cpu nodes 2021-09-25 09:46:15 -06:00
usb.c common: rename getc() to getchar() 2020-10-22 09:54:53 -04:00
video.c doc: replace @return by Return: 2022-01-19 18:11:34 +01:00
virtio.c test: dm: virtio: Split out virtio device tests 2022-06-08 09:24:04 -04:00
virtio_device.c test: dm: virtio: Test virtio device driver probing 2022-06-08 09:24:04 -04:00
virtio_rng.c test: dm: virtio_rng: Test virtio-rng with faked device 2022-06-08 09:24:04 -04:00
wdt.c watchdog: add pulse support to gpio watchdog driver 2022-07-21 08:09:06 +02:00