[PATCH v4 00/10] handling all DM watchdogs in watchdog_reset()
Rasmus Villemoes
rasmus.villemoes at prevas.dk
Mon Aug 2 17:00:06 CEST 2021
This series is an attempt at expanding the wdt-uclass provided
watchdog_reset() to handle all DM watchdogs, not just the first
one. Some of the ad hoc work done for the first DM watchdog in
initr_watchdog() is now moved to a .pre_probe hook so it is
automatically done for all devices.
It also includes a patch adding a driver for a gpio-petted watchdog
device (and a sandbox test of that) - it is included here because that
also gives a relatively easy way to have more than one (kind of)
watchdog device in the sandbox, which is then used at the end to test
that watchdog_reset() behaves as expected.
v2 here: https://lore.kernel.org/u-boot/20210527220017.1266765-1-rasmus.villemoes@prevas.dk/
v3 here: https://lore.kernel.org/u-boot/20210702124510.124401-1-rasmus.villemoes@prevas.dk/
Changes in v4:
- Do not make init_watchdog_dev() into a .post_probe hook, but call it
from within the probing loop in initr_watchdog().
Rasmus Villemoes (10):
watchdog: wdt-uclass.c: use wdt_start() in wdt_expire_now()
watchdog: wdt-uclass.c: introduce struct wdt_priv
watchdog: wdt-uclass.c: neaten UCLASS_DRIVER definition
watchdog: wdt-uclass.c: refactor initr_watchdog()
watchdog: wdt-uclass.c: keep track of each device's running state
sandbox: disable CONFIG_WATCHDOG_AUTOSTART
watchdog: wdt-uclass.c: handle all DM watchdogs in watchdog_reset()
watchdog: add gpio watchdog driver
sandbox: add test of wdt_gpio driver
sandbox: add test of wdt-uclass' watchdog_reset()
arch/sandbox/dts/test.dts | 8 +
configs/sandbox64_defconfig | 2 +
configs/sandbox_defconfig | 2 +
.../watchdog/gpio-wdt.txt | 19 ++
drivers/watchdog/Kconfig | 9 +
drivers/watchdog/Makefile | 1 +
drivers/watchdog/gpio_wdt.c | 68 +++++++
drivers/watchdog/wdt-uclass.c | 167 ++++++++++++------
include/asm-generic/global_data.h | 6 -
test/dm/wdt.c | 90 +++++++++-
10 files changed, 314 insertions(+), 58 deletions(-)
create mode 100644 doc/device-tree-bindings/watchdog/gpio-wdt.txt
create mode 100644 drivers/watchdog/gpio_wdt.c
--
2.31.1
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