From: thomas.betker@freenet.de (Thomas Betker)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] iio: adc: xilinx: Fix VREFN scale
Date: Wed, 11 Nov 2015 21:24:38 +0100 [thread overview]
Message-ID: <1447273478-2530-1-git-send-email-thomas.betker@freenet.de> (raw)
From: Thomas Betker <thomas.betker@rohde-schwarz.com>
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>
---
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 0370624..02e636a 100644
--- a/drivers/iio/adc/xilinx-xadc-core.c
+++ b/drivers/iio/adc/xilinx-xadc-core.c
@@ -841,6 +841,7 @@ 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:
--
2.6.3
next reply other threads:[~2015-11-11 20:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-11 20:24 Thomas Betker [this message]
2015-11-15 10:42 ` [PATCH] iio: adc: xilinx: Fix VREFN scale Jonathan Cameron
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