From patchwork Fri May 19 12:45:24 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabrice Gasnier X-Patchwork-Id: 9737079 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 4F66D601A1 for ; Fri, 19 May 2017 12:47:04 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 424FB28929 for ; Fri, 19 May 2017 12:47:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 364C028930; Fri, 19 May 2017 12:47:04 +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=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID 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 C65DC28929 for ; Fri, 19 May 2017 12:47:03 +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=2fiJp5vw+X/NNu+80JmMrbXFYlrUnKSq6AxavDjpLv4=; b=XjFRMRkwI1hbmx GStU4pDcs+GSH5rtBYArpqaCcBobCzI+Frwm5Txf5yrMRj4ATDabCTxKQNd4WbU7jdV3q3XMjZNiU bRDK4yNIeKVv5a2aBQ/GsZZWypzeEWRI5PBO/TB+IoEXvdhzB8PkhugJEYqKyw6bXOhF+tI1TUWlF W8BJRJ6EjUzRpL1TA9ohpevu7UUwVq9bjDEhDq7B00gsELZZrQAY3R4IjrhPEnBfIaYRn3iPI0Q7C QupdUOhpRPN+LoMJmOmTRAc5FULDo9nk2bZ870tpcktgdiSvvsNpKNhjwiAM7ne6HP72kRsPLADSx nDtPNP/fjpASGjpOBItQ==; 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 1dBhJ8-0002gC-NT; Fri, 19 May 2017 12:47:02 +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 1dBhIa-0001zE-RU for linux-arm-kernel@lists.infradead.org; Fri, 19 May 2017 12:46:31 +0000 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx08-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id v4JCi78v002258; Fri, 19 May 2017 14:45:43 +0200 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-.pphosted.com with ESMTP id 2ahef0n767-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Fri, 19 May 2017 14:45:43 +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 DC2483D; Fri, 19 May 2017 12:45:42 +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 94EE0159C; Fri, 19 May 2017 12:45:42 +0000 (GMT) Received: from localhost (10.75.127.47) by SFHDAG5NODE3.st.com (10.75.127.15) with Microsoft SMTP Server (TLS) id 15.0.1178.4; Fri, 19 May 2017 14:45:42 +0200 From: Fabrice Gasnier To: , , , , , Subject: [PATCH 1/5] dt-bindings: iio: stm32-adc: add support for STM32H7 Date: Fri, 19 May 2017 14:45:24 +0200 Message-ID: <1495197928-1439-2-git-send-email-fabrice.gasnier@st.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1495197928-1439-1-git-send-email-fabrice.gasnier@st.com> References: <1495197928-1439-1-git-send-email-fabrice.gasnier@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.47] X-ClientProxiedBy: SFHDAG1NODE3.st.com (10.75.127.3) To SFHDAG5NODE3.st.com (10.75.127.15) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-05-19_08:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170519_054629_286346_09E8B8CA X-CRM114-Status: GOOD ( 10.39 ) 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, benjamin.gaignard@linaro.org, lars@metafoo.de, alexandre.torgue@st.com, linux-iio@vger.kernel.org, pmeerw@pmeerw.net, mcoquelin.stm32@gmail.com, knaack.h@gmx.de, fabrice.gasnier@st.com, benjamin.gaignard@st.com 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 support for STM32H7 Analog to Digital Converter. Main difference is regarding compatible, clock definitions and new features like differential channels support: STM32H7 ADC block has two clock inputs, common clock for all ADCs. One 'bus' clock for registers access, and one optional 'adc' clock for analog circuitry (bus clock may be used for conversions). Signed-off-by: Fabrice Gasnier --- .../devicetree/bindings/iio/adc/st,stm32-adc.txt | 20 ++++++++++++++------ 1 file changed, 14 insertions(+), 6 deletions(-) diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt index e35f9f1..9519d2e 100644 --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt @@ -21,11 +21,17 @@ own configurable sequence and trigger: Contents of a stm32 adc root node: ----------------------------------- Required properties: -- compatible: Should be "st,stm32f4-adc-core". +- compatible: Should be one of "st,stm32f4-adc-core" or "st,stm32h7-adc-core". - reg: Offset and length of the ADC block register set. - interrupts: Must contain the interrupt for ADC block. -- clocks: Clock for the analog circuitry (common to all ADCs). -- clock-names: Must be "adc". +- clocks: Core can use up to two clocks, depending on part used: + - "adc" clock: for the analog circuitry, common to all ADCs. + It's required on stm32f4. + It's optional on stm32h7, bus clock will be used by default if not set. + - "bus" clock: for registers access, common to all ADCs. + It's unused on stm32f4. + It's required on stm32h7. +- clock-names: Must be "adc" and/or "bus" depending on part used. - interrupt-controller: Identifies the controller node as interrupt-parent - vref-supply: Phandle to the vref input analog reference voltage. - #interrupt-cells = <1>; @@ -42,14 +48,16 @@ An ADC block node should contain at least one subnode, representing an ADC instance available on the machine. Required properties: -- compatible: Should be "st,stm32f4-adc". +- compatible: Should be one of "st,stm32f4-adc" or "st,stm32h7-adc". - reg: Offset of ADC instance in ADC block (e.g. may be 0x0, 0x100, 0x200). -- clocks: Input clock private to this ADC instance. +- clocks: Input clock private to this ADC instance. It's required only on + stm32f4, that has per instance clock input for registers access. - interrupt-parent: Phandle to the parent interrupt controller. - interrupts: IRQ Line for the ADC (e.g. may be 0 for adc@0, 1 for adc@100 or 2 for adc@200). - st,adc-channels: List of single-ended channels muxed for this ADC. - It can have up to 16 channels, numbered from 0 to 15 (resp. for in0..in15). + It can have up to 16 channels on stm32f4 or 20 channels on stm32h7, numbered + from 0 to 15 or 19 (resp. for in0..in15 or in0..in19). - #io-channel-cells = <1>: See the IIO bindings section "IIO consumers" in Documentation/devicetree/bindings/iio/iio-bindings.txt