Revision 02fbabd5f4ed182d2c616e49309f5a3efd9ec671 authored by Fabrice Gasnier on 04 March 2020, 08:55:32 UTC, committed by Mark Brown on 04 March 2020, 13:57:28 UTC
There maybe an overshoot, when disabling, then re-enabling vrefbuf
too quickly. VREFBUF is used by ADC/DAC on some boards. When re-enabling
too quickly, an overshoot on the reference voltage make the conversions
inaccurate for a short period of time.
- Don't put the VREFBUF in HiZ when disabling, to force an active
discharge.
- Enforce a 1ms OFF/ON delay
Fixes: 0cdbf481e927 ("regulator: Add support for stm32-vrefbuf")
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Message-Id: <1583312132-20932-1-git-send-email-fabrice.gasnier@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
1 parent a5b0cda
| File | Mode | Size |
|---|---|---|
| Makefile | -rw-r--r-- | 361 bytes |
| compat.c | -rw-r--r-- | 2.2 KB |
| ipc_sysctl.c | -rw-r--r-- | 6.1 KB |
| mq_sysctl.c | -rw-r--r-- | 2.7 KB |
| mqueue.c | -rw-r--r-- | 40.3 KB |
| msg.c | -rw-r--r-- | 30.5 KB |
| msgutil.c | -rw-r--r-- | 3.6 KB |
| namespace.c | -rw-r--r-- | 4.6 KB |
| sem.c | -rw-r--r-- | 62.1 KB |
| shm.c | -rw-r--r-- | 43.0 KB |
| syscall.c | -rw-r--r-- | 5.1 KB |
| util.c | -rw-r--r-- | 22.8 KB |
| util.h | -rw-r--r-- | 8.7 KB |
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