From patchwork Tue Nov 23 13:39:00 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Antoniu Miclaus X-Patchwork-Id: 12634193 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 04093C433F5 for ; Tue, 23 Nov 2021 13:39:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236492AbhKWNmb (ORCPT ); Tue, 23 Nov 2021 08:42:31 -0500 Received: from mx0a-00128a01.pphosted.com ([148.163.135.77]:53070 "EHLO mx0a-00128a01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236433AbhKWNma (ORCPT ); Tue, 23 Nov 2021 08:42:30 -0500 Received: from pps.filterd (m0167089.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 1ANArOFH009162; Tue, 23 Nov 2021 08:39:21 -0500 Received: from nwd2mta3.analog.com ([137.71.173.56]) by mx0a-00128a01.pphosted.com (PPS) with ESMTPS id 3cg6mm0kww-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 23 Nov 2021 08:39:21 -0500 Received: from ASHBMBX8.ad.analog.com (ASHBMBX8.ad.analog.com [10.64.17.5]) by nwd2mta3.analog.com (8.14.7/8.14.7) with ESMTP id 1ANDdK57007030 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 23 Nov 2021 08:39:20 -0500 Received: from ASHBCASHYB5.ad.analog.com (10.64.17.133) by ASHBMBX8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.858.5; Tue, 23 Nov 2021 08:39:19 -0500 Received: from ASHBMBX8.ad.analog.com (10.64.17.5) by ASHBCASHYB5.ad.analog.com (10.64.17.133) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.858.5; Tue, 23 Nov 2021 08:39:19 -0500 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server id 15.2.858.5 via Frontend Transport; Tue, 23 Nov 2021 08:39:19 -0500 Received: from amiclaus-VirtualBox.ad.analog.com (AMICLAUS-L02.ad.analog.com [10.48.65.181]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 1ANDdETA000435; Tue, 23 Nov 2021 08:39:18 -0500 From: Antoniu Miclaus To: , , , , CC: Antoniu Miclaus Subject: [PATCH v2 4/4] iio:filter:admv8818: Add sysfs ABI documentation Date: Tue, 23 Nov 2021 15:39:00 +0200 Message-ID: <20211123133900.133027-4-antoniu.miclaus@analog.com> X-Mailer: git-send-email 2.34.0 In-Reply-To: <20211123133900.133027-1-antoniu.miclaus@analog.com> References: <20211123133900.133027-1-antoniu.miclaus@analog.com> MIME-Version: 1.0 X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-GUID: kgfb73q7j9_P-d2qsvthYt3TU2aDdlgW X-Proofpoint-ORIG-GUID: kgfb73q7j9_P-d2qsvthYt3TU2aDdlgW X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.0.607.475 definitions=2021-11-23_04,2021-11-23_01,2020-04-07_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 clxscore=1015 mlxlogscore=999 impostorscore=0 mlxscore=0 spamscore=0 bulkscore=0 suspectscore=0 adultscore=0 malwarescore=0 priorityscore=1501 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2110150000 definitions=main-2111230076 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Add initial ABI documentation for admv8818 filter sysfs interfaces. Signed-off-by: Antoniu Miclaus --- changes in v2: - remove bandwidth/center frequency related custom device attributes - remove bypass filter mode .../ABI/testing/sysfs-bus-iio-filter-admv8818 | 44 +++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-iio-filter-admv8818 diff --git a/Documentation/ABI/testing/sysfs-bus-iio-filter-admv8818 b/Documentation/ABI/testing/sysfs-bus-iio-filter-admv8818 new file mode 100644 index 000000000000..7211b5d0daa0 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-iio-filter-admv8818 @@ -0,0 +1,44 @@ +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_filter_high_pass_3db_frequency +KernelVersion: +Contact: linux-iio@vger.kernel.org +Description: + The cut-off frequency of the ADMV8818 high pass filter. The value is scaled using + the `out_altvoltageY_scale` attribute so that GHz frequencies are valid inputs, + The accepted range of values for the frequencies is between 1.75GHz and 19.9GHz. + + The default value for the scale is 1000000, therefore MHz frequency values are + passed as input. + +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_filter_low_pass_3db_frequency +KernelVersion: +Contact: linux-iio@vger.kernel.org +Description: + The cut-off frequency of the ADMV8818 low pass filter. The value is scaled using + the `out_altvoltageY_scale` attribute so that GHz frequencies are valid inputs, + The accepted range of values for the frequencies is between 2.05GHz and 18.85GHz. + + The default value for the scale is 1000000, therefore MHz frequency values are + passed as input. + +What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_scale +KernelVersion: +Contact: linux-iio@vger.kernel.org +Description: + Scale high pass and lowpass filter frequency values to Hz. + +What: /sys/bus/iio/devices/iio:deviceX/filter_mode_available +KernelVersion: +Contact: linux-iio@vger.kernel.org +Description: + Reading this returns the valid values that can be written to the + on_altvoltage0_mode attribute: + + - auto -> Adjust bandpass filter to track changes in input clock rate. + - manual -> disable/unregister the clock rate notifier / input clock tracking. + +What: /sys/bus/iio/devices/iio:deviceX/filter_mode +KernelVersion: +Contact: linux-iio@vger.kernel.org +Description: + This attribute configures the filter mode. + Reading returns the actual mode.