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| author | Guenter Roeck <linux@roeck-us.net> | 2024-09-06 06:29:12 -0700 |
|---|---|---|
| committer | Philippe Mathieu-Daudé <philmd@linaro.org> | 2024-09-13 20:11:13 +0200 |
| commit | 3a0b75880a05088af176523ce820ef0e0a1d2317 (patch) | |
| tree | 7ddc6eaaa4173f9988d813ac5bbc863aa92179fe /hw | |
| parent | bf4e487057fe4998ec494c00cc97242c0f37873e (diff) | |
| download | qemu-3a0b75880a05088af176523ce820ef0e0a1d2317.zip qemu-3a0b75880a05088af176523ce820ef0e0a1d2317.tar.gz qemu-3a0b75880a05088af176523ce820ef0e0a1d2317.tar.bz2 | |
hw/sensor/tmp105: Lower 4 bit of limit registers are always 0
Per datasheet, "HIGH AND LOW LIMIT REGISTERS", the lower 4 bit
of the limit registers are unused and always report 0.
The lower 4 bit should not be used for temperature comparisons,
so mask the unused bits before storing the limits.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20240906154911.86803-6-philmd@linaro.org>
[PMD: Update tests/qtest/ files]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/sensor/tmp105.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/hw/sensor/tmp105.c b/hw/sensor/tmp105.c index f5101af..9d7b911 100644 --- a/hw/sensor/tmp105.c +++ b/hw/sensor/tmp105.c @@ -171,7 +171,7 @@ static void tmp105_write(TMP105State *s) case TMP105_REG_T_HIGH: if (s->len >= 3) { s->limit[s->pointer & 1] = (int16_t) - ((((uint16_t) s->buf[0]) << 8) | s->buf[1]); + ((((uint16_t) s->buf[0]) << 8) | (s->buf[1] & 0xf0)); } tmp105_alarm_update(s, false); break; |