From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2992545AbcAPBg2 (ORCPT ); Fri, 15 Jan 2016 20:36:28 -0500 Received: from youngberry.canonical.com ([91.189.89.112]:35657 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753668AbcAPACj (ORCPT ); Fri, 15 Jan 2016 19:02:39 -0500 From: Kamal Mostafa To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Thomas Betker , Jonathan Cameron , Kamal Mostafa Subject: [PATCH 4.2.y-ckt 014/305] iio: adc: xilinx: Fix VREFN scale Date: Fri, 15 Jan 2016 15:57:08 -0800 Message-Id: <1452902519-2754-15-git-send-email-kamal@canonical.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1452902519-2754-1-git-send-email-kamal@canonical.com> References: <1452902519-2754-1-git-send-email-kamal@canonical.com> X-Extended-Stable: 4.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.2.8-ckt2 -stable review patch. If anyone has any objections, please let me know. ---8<------------------------------------------------------------ From: Thomas Betker 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 Signed-off-by: Thomas Betker Signed-off-by: Jonathan Cameron Signed-off-by: Kamal Mostafa --- 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