From patchwork Wed Aug 30 15:55:27 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabrice Gasnier X-Patchwork-Id: 9930109 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 0FDEE60380 for ; Wed, 30 Aug 2017 15:56:34 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0251D286CC for ; Wed, 30 Aug 2017 15:56:34 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EB43D286D0; Wed, 30 Aug 2017 15:56:33 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.6 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 9B84B286CC for ; Wed, 30 Aug 2017 15:56:33 +0000 (UTC) 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:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=4B/b7UnNbJ9hG6HCttBWC9WKsHK0Ckjmkt/w5z++0hQ=; b=SXNkmwHVLO+sgt 8AIPfrZXBggQfNEIuh9rM6LssYmXsBEenrr1SZkGNXCoHI/r6IEv4QjWqnpBsehky1efc2+4tWNVP kHC1UEnCQuUhsCC24HsfqjKnqUk/gfEWik6HfCt/hIKuJ+yln0WluVU+AnoYjlp2GOenfBR+NMFX4 97uvIroTHJ6vxqM8L7DJJeuYzuXPXge0T9CkYgOyy5i0NbouFXhDPESRHp+UHijMpik6e34wJdQnj qc1rqZ2eCCx43vdA3Qc9+nBZeY4zF5p20Y0tXEvtPGA7eJ/Iwmf+ZiKolssqXf0sFr1Bos7JmTw/3 W26MmxYBu5ToCebdyBsw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1dn5Lx-0008Ox-Nt; Wed, 30 Aug 2017 15:56:29 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93] helo=mx07-00178001.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1dn5Ld-00087I-R5 for linux-arm-kernel@lists.infradead.org; Wed, 30 Aug 2017 15:56:11 +0000 Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx08-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v7UFskrX026008; Wed, 30 Aug 2017 17:55:34 +0200 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-.pphosted.com with ESMTP id 2cnkgpw3u4-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Wed, 30 Aug 2017 17:55:34 +0200 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 2BA4C34; Wed, 30 Aug 2017 15:55:34 +0000 (GMT) Received: from Webmail-eu.st.com (sfhdag5node3.st.com [10.75.127.15]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 097DF2980; Wed, 30 Aug 2017 15:55:34 +0000 (GMT) Received: from localhost (10.75.127.51) by SFHDAG5NODE3.st.com (10.75.127.15) with Microsoft SMTP Server (TLS) id 15.0.1178.4; Wed, 30 Aug 2017 17:55:33 +0200 From: Fabrice Gasnier To: , , , Subject: [PATCH v2 1/3] dt-bindings: regulator: Add STM32 Voltage Reference Buffer Date: Wed, 30 Aug 2017 17:55:27 +0200 Message-ID: <1504108529-31727-2-git-send-email-fabrice.gasnier@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1504108529-31727-1-git-send-email-fabrice.gasnier@st.com> References: <1504108529-31727-1-git-send-email-fabrice.gasnier@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.51] X-ClientProxiedBy: SFHDAG7NODE2.st.com (10.75.127.20) To SFHDAG5NODE3.st.com (10.75.127.15) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-08-30_07:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170830_085610_176609_4758646B X-CRM114-Status: UNSURE ( 9.17 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, devicetree@vger.kernel.org, linux@armlinux.org.uk, linux-kernel@vger.kernel.org, mcoquelin.stm32@gmail.com, fabrice.gasnier@st.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Document STM32 VREFBUF (voltage reference buffer) which can be used as voltage reference for ADCs, DACs and external components. Signed-off-by: Fabrice Gasnier Acked-by: Rob Herring --- .../bindings/regulator/st,stm32-vrefbuf.txt | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/st,stm32-vrefbuf.txt diff --git a/Documentation/devicetree/bindings/regulator/st,stm32-vrefbuf.txt b/Documentation/devicetree/bindings/regulator/st,stm32-vrefbuf.txt new file mode 100644 index 0000000..3944ee3 --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/st,stm32-vrefbuf.txt @@ -0,0 +1,20 @@ +STM32 VREFBUF - Voltage reference buffer + +Some STM32 devices embed a voltage reference buffer which can be used as +voltage reference for ADCs, DACs and also as voltage reference for external +components through the dedicated VREF+ pin. + +Required properties: +- compatible: Must be "st,stm32-vrefbuf". +- reg: Offset and length of VREFBUF register set. +- clocks: Must contain an entry for peripheral clock. + +Example: + vrefbuf: regulator@58003C00 { + compatible = "st,stm32-vrefbuf"; + reg = <0x58003C00 0x8>; + clocks = <&rcc VREF_CK>; + regulator-min-microvolt = <1500000>; + regulator-max-microvolt = <2500000>; + vdda-supply = <&vdda>; + };