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| Started by | Kamal Mostafa <kamal@canonical.com> |
|---|---|
| First post | 2016-01-16 02:40 +0100 |
| Last post | 2016-01-16 02:40 +0100 |
| Articles | 1 — 1 participant |
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[PATCH 4.2.y-ckt 014/305] iio: adc: xilinx: Fix VREFN scale Kamal Mostafa <kamal@canonical.com> - 2016-01-16 02:40 +0100
| From | Kamal Mostafa <kamal@canonical.com> |
|---|---|
| Date | 2016-01-16 02:40 +0100 |
| Subject | [PATCH 4.2.y-ckt 014/305] iio: adc: xilinx: Fix VREFN scale |
| Message-ID | <qRo0r-5P2-55@gated-at.bofh.it> |
4.2.8-ckt2 -stable review patch. If anyone has any objections, please let me know. ---8<------------------------------------------------------------ From: Thomas Betker <thomas.betker@rohde-schwarz.com> 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: Kamal Mostafa <kamal@canonical.com> --- drivers/iio/adc/xilinx-xadc-core.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c index ce93bd8..95c0b3d 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: -- 1.9.1
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