From patchwork Fri Mar 12 10:55:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 398951 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EF465C43333 for ; Fri, 12 Mar 2021 10:56:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C32DD64FDC for ; Fri, 12 Mar 2021 10:56:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233645AbhCLKz5 (ORCPT ); Fri, 12 Mar 2021 05:55:57 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40872 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232920AbhCLKzY (ORCPT ); Fri, 12 Mar 2021 05:55:24 -0500 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F2E34C061761 for ; Fri, 12 Mar 2021 02:55:23 -0800 (PST) Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lKfRt-0006gJ-CH; Fri, 12 Mar 2021 11:55:17 +0100 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1lKfRs-0008MB-DV; Fri, 12 Mar 2021 11:55:16 +0100 From: Oleksij Rempel To: Rob Herring , Jonathan Cameron Cc: Oleksij Rempel , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Pengutronix Kernel Team , David Jander , Robin van der Gracht , linux-iio@vger.kernel.org, Lars-Peter Clausen , Peter Meerwald-Stadler , Dmitry Torokhov Subject: [PATCH v2 1/3] dt-bindings:iio:adc: add generic settling-time-us and average-samples channel properties Date: Fri, 12 Mar 2021 11:55:13 +0100 Message-Id: <20210312105515.32055-2-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210312105515.32055-1-o.rempel@pengutronix.de> References: <20210312105515.32055-1-o.rempel@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: devicetree@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Settling time and over sampling is a typical challenge for different IIO ADC devices. So, introduce channel specific settling-time-us and average-samples properties to cover this use case. Signed-off-by: Oleksij Rempel --- Documentation/devicetree/bindings/iio/adc/adc.yaml | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/adc.yaml b/Documentation/devicetree/bindings/iio/adc/adc.yaml index 912a7635edc4..c748f6573027 100644 --- a/Documentation/devicetree/bindings/iio/adc/adc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/adc.yaml @@ -39,4 +39,13 @@ properties: The first value specifies the positive input pin, the second specifies the negative input pin. + settling-time-us: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Time between enabling the channel and firs stable readings. + + average-samples: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Number of data samples which are averaged for each read. + additionalProperties: true