Messages in this thread Patch in this message | | | From | Christoph Niedermaier <> | Subject | [RFC PATCH] watchdog: da9062: Correct the timeout values | Date | Fri, 3 Dec 2021 17:35:39 +0100 |
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I measured the timeout values of my DA9061 chip. According to the information in the data sheet the formula should be:
timeout = 2.048 * 2^(regval - 1)
But my measured values differ from that. Accoring to my measured values the formula must be:
timeout = 3.2 * 2^(regval - 1)
Is there something wrong with my chip, or has anyone else noticed this as well?
Signed-off-by: Christoph Niedermaier <cniedermaier@dh-electronics.com> Cc: Support Opensource <support.opensource@diasemi.com> Cc: Adam Thomson <Adam.Thomson.Opensource@diasemi.com> Cc: Wim Van Sebroeck <wim@linux-watchdog.org> Cc: Guenter Roeck <linux@roeck-us.net> Cc: Andrej Picej <andrej.picej@norik.com> Cc: linux-watchdog@vger.kernel.org Cc: linux-kernel@vger.kernel.org To: linux-arm-kernel@lists.infradead.org --- drivers/watchdog/da9062_wdt.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/watchdog/da9062_wdt.c b/drivers/watchdog/da9062_wdt.c index f02cbd530538..d2576aba9ca5 100644 --- a/drivers/watchdog/da9062_wdt.c +++ b/drivers/watchdog/da9062_wdt.c @@ -20,7 +20,8 @@ #include <linux/regmap.h> #include <linux/of.h> -static const unsigned int wdt_timeout[] = { 0, 2, 4, 8, 16, 32, 65, 131 }; +static const unsigned int wdt_timeout[] = { 0, 3, 6, 12, 25, 51, 102, 204 }; + #define DA9062_TWDSCALE_DISABLE 0 #define DA9062_TWDSCALE_MIN 1 #define DA9062_TWDSCALE_MAX (ARRAY_SIZE(wdt_timeout) - 1) -- 2.11.0
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