From patchwork Mon Apr 24 09:23:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Stein X-Patchwork-Id: 676714 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 129EBC77B7F for ; Mon, 24 Apr 2023 09:23:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229507AbjDXJXX (ORCPT ); Mon, 24 Apr 2023 05:23:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55062 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230454AbjDXJXW (ORCPT ); Mon, 24 Apr 2023 05:23:22 -0400 Received: from mx1.tq-group.com (mx1.tq-group.com [93.104.207.81]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CBA5A1B9; Mon, 24 Apr 2023 02:23:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tq-group.com; i=@tq-group.com; q=dns/txt; s=key1; t=1682328201; x=1713864201; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=+MzlbYDAy9LH69SHQ+jHTKd7Y60sbpiM9FfO099q13Q=; b=nmzYP84KUS2KiQbm3RnciQTu/vVjWKP8Kk8XQ63Hdt1HTqkLkwSUhItd 1DubdsK29+FYw4upJFBs63ew/zTvUaBNmhMQIzCI9JpWnaD6vh6ck1Ml8 TbYSnXso+v5yP4BlEXqOgmbeYxC/1pP6WFYVIBbZcsvU48wLzb7IYvXCV ZN4HinovIEYpQ9PtiooJyRs1EVJOz87dxUhKjpP8PEGhpym5UzeBVnHO1 3qmIeHRAtaAfthojMF28LzJKllWx4NsObgabnUJ5n2wzCmEjj+UQPxkFp f/zSBHnHEYBPrTA9MCL3WHNJ3AgyTorV5LTUOCbGttdtfRgcB03ZRPHSu w==; X-IronPort-AV: E=Sophos;i="5.99,222,1677538800"; d="scan'208";a="30510899" Received: from unknown (HELO tq-pgp-pr1.tq-net.de) ([192.168.6.15]) by mx1-pgp.tq-group.com with ESMTP; 24 Apr 2023 11:23:19 +0200 Received: from mx1.tq-group.com ([192.168.6.7]) by tq-pgp-pr1.tq-net.de (PGP Universal service); Mon, 24 Apr 2023 11:23:19 +0200 X-PGP-Universal: processed; by tq-pgp-pr1.tq-net.de on Mon, 24 Apr 2023 11:23:19 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tq-group.com; i=@tq-group.com; q=dns/txt; s=key1; t=1682328199; x=1713864199; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=+MzlbYDAy9LH69SHQ+jHTKd7Y60sbpiM9FfO099q13Q=; b=ooysYHSOYNJrwhaMF8yGQlBELVG1bbw/3b3Sf6edEoz1E8L2C6oRybG4 FaCPMxQaE0ZOKF28lb01CjsQncOAg0xEM9JM4BGuf48WYngfNPS9/03Po kM3jBDZE6rIOmR0YU22QsZDuCdOBMYw/dDfkGifV/glArMmsw3LZuPn7V VuDtwROtrHYi0ru9iZAJH1PsImkKrSt7Pdz6DWePUKdB2bF/oxN5Mdp1j hB3Pl5X6Rve8fWub1kULR7PmojBY6+ROHkT1WuSdKMvHo4htlwJZSyMxA zjKmJUW3XjAatV5qknmcymk3FN5e/LicnhK7v2Q0KavHyYJwb01k2289U w==; X-IronPort-AV: E=Sophos;i="5.99,222,1677538800"; d="scan'208";a="30510898" Received: from vtuxmail01.tq-net.de ([10.115.0.20]) by mx1.tq-group.com with ESMTP; 24 Apr 2023 11:23:18 +0200 Received: from steina-w.tq-net.de (unknown [10.123.53.21]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (No client certificate requested) by vtuxmail01.tq-net.de (Postfix) with ESMTPSA id A9ED8280056; Mon, 24 Apr 2023 11:23:18 +0200 (CEST) From: Alexander Stein To: Cai Huoqing , Haibo Chen , Jonathan Cameron , Lars-Peter Clausen , Rob Herring , Krzysztof Kozlowski , Shawn Guo , Sascha Hauer , Fabio Estevam Cc: Alexander Stein , Pengutronix Kernel Team , NXP Linux Team , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Marco Felsch Subject: [PATCH v2 1/1] dt-bindings: iio: imx8qxp-adc: add missing vref-supply Date: Mon, 24 Apr 2023 11:23:12 +0200 Message-Id: <20230424092312.61746-1-alexander.stein@ew.tq-group.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Although this property is used right now for IIO_CHAN_INFO_SCALE, this ADC has two internal reference voltages, which the driver currently doesn't make use of. Fixes: db73419d8c06 ("dt-bindings: iio: adc: Add binding documentation for NXP IMX8QXP ADC") Signed-off-by: Alexander Stein Acked-by: Krzysztof Kozlowski --- Thanks for your inputs. This improved descritpion should make it clear that this property is only about the external reference voltage, not about the optional, internal voltages. Changes in v2: * Improved commit message subject as suggested * Add hint about feature flag regarding multiple, internal, reference voltages .../devicetree/bindings/iio/adc/nxp,imx8qxp-adc.yaml | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/iio/adc/nxp,imx8qxp-adc.yaml b/Documentation/devicetree/bindings/iio/adc/nxp,imx8qxp-adc.yaml index 63369ba388e4..878e67054d7c 100644 --- a/Documentation/devicetree/bindings/iio/adc/nxp,imx8qxp-adc.yaml +++ b/Documentation/devicetree/bindings/iio/adc/nxp,imx8qxp-adc.yaml @@ -39,6 +39,12 @@ properties: power-domains: maxItems: 1 + vref-supply: + description: | + External ADC reference voltage supply on VREFH pad. If VERID[MVI] is + set, there are additional, internal reference voltages selectable. + VREFH1 is always from VREFH pad. + "#io-channel-cells": const: 1 @@ -72,6 +78,7 @@ examples: assigned-clocks = <&clk IMX_SC_R_ADC_0>; assigned-clock-rates = <24000000>; power-domains = <&pd IMX_SC_R_ADC_0>; + vref-supply = <®_1v8>; #io-channel-cells = <1>; }; };