From mboxrd@z Thu Jan 1 00:00:00 1970 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=-8.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_2 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 17444C742D2 for ; Sun, 14 Jul 2019 16:12:29 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E4B7720C01 for ; Sun, 14 Jul 2019 16:12:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="fD5rp/od"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="PSjJbnPI" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E4B7720C01 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+8+k/tbRVJifDWyRoJRptuhHAYoww4/XbftIdzMxSeU=; b=fD5rp/od6pgKiu 81ujhNeO0yggC8AMtWNLQ0fyRKG35tLmblLVqw02ln96xSJQVzOAGTmDEAClKvY2DDH5iGjgrbYOa 94Ieyc8cd9Od9MS2bi4JW5ZM4oz2qZ6bURJTbAgeB6WahQdZ2GLivt1u7QqL43ox41LOdywbuFNEQ a4buUchy4RJ/mrAESh7dcMXURiGIjlmHgUgIj7BPyneejexZ2EllJQE4xPx2kfrnlN3OEBg0FiaWS 9r0qnshD9UOCXL6L+Wr7fckOYLhTHc2O0/b+LUoU+Sz22O/cZFmej6ndgArXFnOHUbgktST4a8a5+ OuVgWMFaC/hJLwh/55qA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hmh6t-00006W-JC; Sun, 14 Jul 2019 16:12:23 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hmh6q-00005o-MY for linux-arm-kernel@lists.infradead.org; Sun, 14 Jul 2019 16:12:22 +0000 Received: from archlinux (cpc149474-cmbg20-2-0-cust94.5-4.cable.virginm.net [82.4.196.95]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9944E205F4; Sun, 14 Jul 2019 16:12:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563120738; bh=jQ0f569z2zUiXdImrPkJu/Fo2TGV+neywvRzlzhGgrA=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=PSjJbnPIDw7/YQwyII6FXeqylpSOLkQsP48YfC+L+kwj2Y1lAZ/A4dVA8M6yp6T9s biqbxmYYYElipW9E91i3xFmwHFfLR/jM5h2ElZY4bse0b9ahjAyzTRyIDgyqIVXRv6 q2ZfqviNOJiqwbuInLSgljaqEt5bOy6K1GpVdf4s= Date: Sun, 14 Jul 2019 17:11:41 +0100 From: Jonathan Cameron To: Fabrice Gasnier Subject: Re: [PATCH v2 1/3] dt-bindings: iio: adc: stm32: add analog switches supply control Message-ID: <20190714171141.12fc2d1d@archlinux> In-Reply-To: <1562148496-26789-2-git-send-email-fabrice.gasnier@st.com> References: <1562148496-26789-1-git-send-email-fabrice.gasnier@st.com> <1562148496-26789-2-git-send-email-fabrice.gasnier@st.com> X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190714_091220_756381_F1484EB9 X-CRM114-Status: GOOD ( 15.35 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, lars@metafoo.de, alexandre.torgue@st.com, linux-iio@vger.kernel.org, pmeerw@pmeerw.net, linux-kernel@vger.kernel.org, robh+dt@kernel.org, mcoquelin.stm32@gmail.com, knaack.h@gmx.de, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, 3 Jul 2019 12:08:14 +0200 Fabrice Gasnier wrote: > On stm32h7 and stm32mp1, the ADC inputs are multiplexed with analog > switches which have reduced performances when their supply is below 2.7V > (vdda by default). Booster or vdd can be used, to get full ADC > performances. > > Add documentation for: > - optional booster-supply that can be used on stm32h7 and stm32mp1. > - optional vdd-supply that can be used on stm32mp1 to supply analog > circuitry, selected by syscfg. > Mark these as optional, since this is a trade-off between analog > performance and power consumption. > > Signed-off-by: Fabrice Gasnier Seems fine to me. Applied to the togreg branch of iio.git and pushed out as testing for the autobuilders to play with it. Thanks, Jonathan > --- > Changes in v2: > - Rework since: "Add missing vdda-supply to STM32 ADC" series. > - Add booster-supply regulator description > - typo: input switches > --- > Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt > index 93a0bd2..4c0da8c 100644 > --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt > +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt > @@ -47,6 +47,12 @@ Required properties: > Optional properties: > - A pinctrl state named "default" for each ADC channel may be defined to set > inX ADC pins in mode of operation for analog input on external pin. > +- booster-supply: Phandle to the embedded booster regulator that can be used > + to supply ADC analog input switches on stm32h7 and stm32mp1. > +- vdd-supply: Phandle to the vdd input voltage. It can be used to supply ADC > + analog input switches on stm32mp1. > +- st,syscfg: Phandle to system configuration controller. It can be used to > + control the analog circuitry on stm32mp1. > > Contents of a stm32 adc child node: > ----------------------------------- _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel