Hi Guenter,
On 22 May 2015 at 23:01, Guenter Roeck linux@roeck-us.net wrote:
On Fri, May 22, 2015 at 04:55:04PM +0200, Arnd Bergmann wrote:
On Friday 22 May 2015 22:50:30 Hanjun Guo wrote:
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index e5e7c55..25a0df1 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -152,6 +152,18 @@ config ARM_SP805_WATCHDOG ARM Primecell SP805 Watchdog timer. This will reboot your system when the timeout is reached.
+config ARM_SBSA_WATCHDOG
tristate "ARM SBSA Generic Watchdog"depends on ARM || ARM64 || COMPILE_TESTSBSA is for ARMv8-A based (64-bit) servers, no need to depends on ARM, and why we depends on COMPILE_TEST?
I think it's a reasonable assumption that someone will sooner or later put that hardware into an ARM32 machine, or run a 32-bit kernel on a chip that has it.
While SBSA requires this watchdog device, nothing prevents SoC manufacturers from using the same design in something that is not a server.
Tricky, though. Since teh driver uses arm specific clock functions, I don't think this can compile on a non-arm machine.
yes, According to SBSA spec, the clock source of SBSAwatchdog is system counter which is a part of arm arch timer. So I think SBSA watchdog always goes with ARM.
ARM arch timer has been used on ARM32 and ARM64, so SBSA also can be used on ARM32. Just there is not a ARM32 hardware has that IP core right now.
Guenter