watchdog: s3c2410: describe driver in KConfig

Describe better which driver applies to which SoC, to make configuring
kernel for Samsung SoC easier.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20210924132930.111443-1-krzysztof.kozlowski@canonical.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index f28fdae3c5b466747bd0f561fc0c308daadd11a1..0fab8230b663fd429c4d06d900092dec3f75b8c3 100644 (file)
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -496,16 +496,18 @@ config S3C2410_WATCHDOG
        select WATCHDOG_CORE
        select MFD_SYSCON if ARCH_EXYNOS
        help
-         Watchdog timer block in the Samsung SoCs. This will reboot
-         the system when the timer expires with the watchdog enabled.
+         Watchdog timer block in the Samsung S3C24xx, S3C64xx, S5Pv210 and
+         Exynos SoCs. This will reboot the system when the timer expires with
+         the watchdog enabled.
 
          The driver is limited by the speed of the system's PCLK
          signal, so with reasonably fast systems (PCLK around 50-66MHz)
          then watchdog intervals of over approximately 20seconds are
          unavailable.
 
+         Choose Y/M here only if you build for such Samsung SoC.
          The driver can be built as a module by choosing M, and will
-         be called s3c2410_wdt
+         be called s3c2410_wdt.
 
 config SA1100_WATCHDOG
        tristate "SA1100/PXA2xx watchdog"