[PATCH 4/4] watchdog: st_wdt: Add new driver for ST's LPC Watchdog
From: arnd@arndb.de (Arnd Bergmann)
Date: 2014-10-23 15:24:32
Also in:
linux-watchdog, lkml
On Thursday 23 October 2014 16:18:44 Lee Jones wrote:
quoted hunk ↗ jump to hunk
+config ST_WATCHDOG + tristate "STMicroelectronics LPC Watchdog" + depends on ARCH_STI && OF + depends on !RTC_DRV_ST_LPC + select WATCHDOG_CORE + help + Say Y here to include Watchdog timer support for the watchdog + existing in the LPC of STMicroelectronics SOCs. + !!! BE CARREFUL !!! + This driver shares hardware resources with RTC Alarm part of the + LPC. Both LPC Watchdog driver and LPC RTC driver cannot be + used together. + + To compile this driver as a module, choose M here: the + module will be called st-wdt. +
How is this ensured by the code? Do both drivers try to bind to the same device node? Would it make more sense to have a single driver that registers both to the rtc and the watchdog subsystems? Arnd