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 |
|---|---|---|
| platform | ||
| acbuffer.h | -rw-r--r-- | 8.6 KB |
| acconfig.h | -rw-r--r-- | 7.4 KB |
| acexcep.h | -rw-r--r-- | 16.8 KB |
| acnames.h | -rw-r--r-- | 2.1 KB |
| acoutput.h | -rw-r--r-- | 16.4 KB |
| acpi.h | -rw-r--r-- | 1.3 KB |
| acpi_bus.h | -rw-r--r-- | 19.0 KB |
| acpi_drivers.h | -rw-r--r-- | 3.6 KB |
| acpi_io.h | -rw-r--r-- | 713 bytes |
| acpi_lpat.h | -rw-r--r-- | 1.2 KB |
| acpi_numa.h | -rw-r--r-- | 623 bytes |
| acpiosxf.h | -rw-r--r-- | 11.3 KB |
| acpixf.h | -rw-r--r-- | 30.5 KB |
| acrestyp.h | -rw-r--r-- | 18.8 KB |
| actbl.h | -rw-r--r-- | 18.3 KB |
| actbl1.h | -rw-r--r-- | 40.3 KB |
| actbl2.h | -rw-r--r-- | 45.5 KB |
| actbl3.h | -rw-r--r-- | 20.9 KB |
| actypes.h | -rw-r--r-- | 41.0 KB |
| acuuid.h | -rw-r--r-- | 2.4 KB |
| apei.h | -rw-r--r-- | 1.3 KB |
| battery.h | -rw-r--r-- | 561 bytes |
| button.h | -rw-r--r-- | 282 bytes |
| cppc_acpi.h | -rw-r--r-- | 3.1 KB |
| ghes.h | -rw-r--r-- | 2.9 KB |
| hed.h | -rw-r--r-- | 370 bytes |
| nfit.h | -rw-r--r-- | 351 bytes |
| pcc.h | -rw-r--r-- | 651 bytes |
| pdc_intel.h | -rw-r--r-- | 1.0 KB |
| processor.h | -rw-r--r-- | 11.4 KB |
| reboot.h | -rw-r--r-- | 201 bytes |
| video.h | -rw-r--r-- | 2.8 KB |
Computing file changes ...
