diff options
| author | Derek Nguyen <derek.nguyen@collins.com> | 2022-11-10 13:21:08 -0600 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2022-11-20 06:04:15 -0800 |
| commit | 07e06193ead86d4812f431b4d87bbd4161222e3f (patch) | |
| tree | 5a923804f74ef2ecba5d6074766fe239e2a776c7 /drivers/hwmon/ltc2947-core.c | |
| parent | 094226ad94f471a9f19e8f8e7140a09c2625abaa (diff) | |
hwmon: (ltc2947) fix temperature scaling
The LTC2947 datasheet (Rev. B) calls out in the section "Register
Description: Non-Accumulated Result Registers" (pg. 30) that "To
calculate temperature, multiply the TEMP register value by 0.204°C
and add 5.5°C". Fix to add 5.5C and not 0.55C.
Fixes: 9f90fd652bed ("hwmon: Add support for ltc2947")
Signed-off-by: Derek Nguyen <derek.nguyen@collins.com>
Signed-off-by: Brandon Maier <brandon.maier@collins.com>
Link: https://lore.kernel.org/r/20221110192108.20624-1-brandon.maier@collins.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/ltc2947-core.c')
| -rw-r--r-- | drivers/hwmon/ltc2947-core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hwmon/ltc2947-core.c b/drivers/hwmon/ltc2947-core.c index 7404e974762f..2dbbbac9de09 100644 --- a/drivers/hwmon/ltc2947-core.c +++ b/drivers/hwmon/ltc2947-core.c @@ -396,7 +396,7 @@ static int ltc2947_read_temp(struct device *dev, const u32 attr, long *val, return ret; /* in milidegrees celcius, temp is given by: */ - *val = (__val * 204) + 550; + *val = (__val * 204) + 5500; return 0; } |