diff options
| author | Paul Cercueil <paul@crapouillou.net> | 2019-10-23 19:47:12 +0200 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@linux-watchdog.org> | 2019-11-18 20:14:46 +0100 |
| commit | 1d9c30745455c42bff07f500fc6ecaf4c10e942f (patch) | |
| tree | 9354f3aaa5bd92adb75381397767867e3fab440f /drivers/watchdog/Kconfig | |
| parent | dt-bindings: watchdog: sama5d4_wdt: add microchip,sam9x60-wdt compatible (diff) | |
| download | linux-1d9c30745455c42bff07f500fc6ecaf4c10e942f.tar.xz linux-1d9c30745455c42bff07f500fc6ecaf4c10e942f.zip | |
watchdog: jz4740: Use WDT clock provided by TCU driver
Instead of requesting the "ext" clock and handling the watchdog clock
divider and gating in the watchdog driver, we now request and use the
"wdt" clock that is supplied by the ingenic-timer "TCU" driver.
The major benefit is that the watchdog's clock rate and parent can now
be specified from within devicetree, instead of hardcoded in the driver.
Also, this driver won't poke anymore into the TCU registers to
enable/disable the clock, as this is now handled by the TCU driver.
On the bad side, we break the ABI with devicetree - as we now request a
different clock. In this very specific case it is still okay, as every
Ingenic JZ47xx-based board out there compile the devicetree within the
kernel; so it's still time to push breaking changes, in order to get a
clean devicetree that won't break once it musn't.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
Tested-by: Artur Rojek <contact@artur-rojek.eu>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20191023174714.14362-1-paul@crapouillou.net
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog/Kconfig')
| -rw-r--r-- | drivers/watchdog/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 28768172a92b..712e85d49884 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -1643,6 +1643,7 @@ config INDYDOG config JZ4740_WDT tristate "Ingenic jz4740 SoC hardware watchdog" depends on MACH_JZ4740 || MACH_JZ4780 + depends on COMMON_CLK select WATCHDOG_CORE help Hardware driver for the built-in watchdog timer on Ingenic jz4740 SoCs. |