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| author | Thomas Betker <thomas.betker@rohde-schwarz.com> | 2015-11-11 21:24:38 +0100 |
|---|---|---|
| committer | Luis Henriques <luis.henriques@canonical.com> | 2015-12-14 10:17:08 +0000 |
| commit | 150fa5c1bbc77ee7e30c1cb5a76e2470570a0001 (patch) | |
| tree | f28ef464f38b0e71fc74966b6144515343e38d69 /drivers/iio | |
| parent | 09a752053647474c90b9c0b1472030cd87c13ced (diff) | |
| download | linux-stable-150fa5c1bbc77ee7e30c1cb5a76e2470570a0001.tar.gz linux-stable-150fa5c1bbc77ee7e30c1cb5a76e2470570a0001.tar.bz2 linux-stable-150fa5c1bbc77ee7e30c1cb5a76e2470570a0001.zip | |
iio: adc: xilinx: Fix VREFN scale
commit a57f8dac46fbac5ab0e31aef1a98b3f6eb30c079 upstream.
The scaling factor for VREFN is 3.0/4096 (not 1.0/4096), just as for
VREFP. This is not immediately obvious from the specification (Xilinx
UG480), but has been confirmed by Xilinx support.
Suggested-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Thomas Betker <thomas.betker@rohde-schwarz.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/adc/xilinx-xadc-core.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c index c7637716fa8f..53c80c73f128 100644 --- a/drivers/iio/adc/xilinx-xadc-core.c +++ b/drivers/iio/adc/xilinx-xadc-core.c @@ -857,6 +857,7 @@ static int xadc_read_raw(struct iio_dev *indio_dev, case XADC_REG_VCCINT: case XADC_REG_VCCAUX: case XADC_REG_VREFP: + case XADC_REG_VREFN: case XADC_REG_VCCBRAM: case XADC_REG_VCCPINT: case XADC_REG_VCCPAUX: |