From patchwork Thu Feb 28 10:19:51 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabrice Gasnier X-Patchwork-Id: 10832743 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2EA5C1399 for ; Thu, 28 Feb 2019 10:21:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1C74F2E83A for ; Thu, 28 Feb 2019 10:21:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 105622E86A; Thu, 28 Feb 2019 10:21:15 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 86A1F2E83A for ; Thu, 28 Feb 2019 10:21:14 +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=bkGc+e4ljhrzXzRwFvgwAR04Ms4AwWKu8/0xWKaCVhA=; b=F+KmFU+q2ROsi2 bslUdbPnx0I5Ykcf5W1enIkfUFe3T0hTTk7nrn+qRQtVvGQEsqPsD13tetd6NAg+QzkG/p0Xm0xsi W3QjSMu/LFZjKfdofrPApITqWwPU52qT4iT8lvgYeFh1EPOSoU3ZM+bR8rPcfcNQmPahlhmg5h8yJ tZYo9+cn8U7IsHulbXJJ1YizoJJdgPzVJi4D5g8j4FrxEXzRPO8ulnPg+jxLlnploI2ocWZijmkcq yggV9VN2MmppVKE5rORh0sbrjyp+cyCvUGQSQ09mBvbPLG2sJcNgC4ipQdQkGmmqM7H5ioE70EdbM dWeEPTjC2gZopGxW9SVQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gzIoQ-0004aS-PW; Thu, 28 Feb 2019 10:21:10 +0000 Received: from mx08-00178001.pphosted.com ([91.207.212.93] helo=mx07-00178001.pphosted.com) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gzIoN-0004ZI-1E for linux-arm-kernel@lists.infradead.org; Thu, 28 Feb 2019 10:21:09 +0000 Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx08-00178001.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x1SAHwFM007042; Thu, 28 Feb 2019 11:20:06 +0100 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-00178001.pphosted.com with ESMTP id 2qtwxpcm7j-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Thu, 28 Feb 2019 11:20:06 +0100 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 C08B341; Thu, 28 Feb 2019 10:20:04 +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 9D4C14E45; Thu, 28 Feb 2019 10:20:04 +0000 (GMT) Received: from localhost (10.75.127.48) by SFHDAG5NODE3.st.com (10.75.127.15) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Thu, 28 Feb 2019 11:20:03 +0100 From: Fabrice Gasnier To: , , Subject: [PATCH v2 1/6] dt-bindings: nvmem: Add STM32 factory-programmed romem Date: Thu, 28 Feb 2019 11:19:51 +0100 Message-ID: <1551349196-8956-2-git-send-email-fabrice.gasnier@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1551349196-8956-1-git-send-email-fabrice.gasnier@st.com> References: <1551349196-8956-1-git-send-email-fabrice.gasnier@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.48] X-ClientProxiedBy: SFHDAG2NODE1.st.com (10.75.127.4) To SFHDAG5NODE3.st.com (10.75.127.15) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:, , definitions=2019-02-28_05:, , signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190228_022107_414209_683C3630 X-CRM114-Status: GOOD ( 10.53 ) 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, lionel.debieve@st.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, mcoquelin.stm32@gmail.com, fabrice.gasnier@st.com, linux-stm32@st-md-mailman.stormreply.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 Add documentation for STMicroelectronics STM32 Factory-programmed read only memory area. Signed-off-by: Fabrice Gasnier Reviewed-by: Rob Herring --- Changes in v2: - update "st,stm32f4-otp" compatible as discussed with Rob --- .../devicetree/bindings/nvmem/st,stm32-romem.txt | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/nvmem/st,stm32-romem.txt diff --git a/Documentation/devicetree/bindings/nvmem/st,stm32-romem.txt b/Documentation/devicetree/bindings/nvmem/st,stm32-romem.txt new file mode 100644 index 0000000..142a51d --- /dev/null +++ b/Documentation/devicetree/bindings/nvmem/st,stm32-romem.txt @@ -0,0 +1,31 @@ +STMicroelectronics STM32 Factory-programmed data device tree bindings + +This represents STM32 Factory-programmed read only non-volatile area: locked +flash, OTP, read-only HW regs... This contains various information such as: +analog calibration data for temperature sensor (e.g. TS_CAL1, TS_CAL2), +internal vref (VREFIN_CAL), unique device ID... + +Required properties: +- compatible: Should be one of: + "st,stm32f4-otp" + "st,stm32mp15-bsec" +- reg: Offset and length of factory-programmed area. +- #address-cells: Should be '<1>'. +- #size-cells: Should be '<1>'. + +Optional Data cells: +- Must be child nodes as described in nvmem.txt. + +Example on stm32f4: + romem: nvmem@1fff7800 { + compatible = "st,stm32f4-otp"; + reg = <0x1fff7800 0x400>; + #address-cells = <1>; + #size-cells = <1>; + + /* Data cells: ts_cal1 at 0x1fff7a2c */ + ts_cal1: calib@22c { + reg = <0x22c 0x2>; + }; + ... + };