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: 9f90fd652b
("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>
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@ -396,7 +396,7 @@ static int ltc2947_read_temp(struct device *dev, const u32 attr, long *val,
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return ret;
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/* in milidegrees celcius, temp is given by: */
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*val = (__val * 204) + 550;
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*val = (__val * 204) + 5500;
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return 0;
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}
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