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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT 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 79302C433E0 for ; Mon, 22 Mar 2021 18:21:31 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 0B2E461992 for ; Mon, 22 Mar 2021 18:21:30 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0B2E461992 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=walle.cc Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding :Content-Type:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To:Message-Id:Date: Subject:Cc:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=sEJFqhSntTURtkOEquKiJ88A88BWHNeT+BHBOQ4EXfM=; b=mfTFiBzhrev7eRzVvIteqf18g 0QoJv9Yqvm4kbIlXaLDaeZUnLD9ObflMn6mZVkEUimmm4QZg6yVDpZi39SWNRDlckVrdvxH6sPMon uN0MnCgYzsH63UW9bBO89AIJ519CYCjSWS4QijaPS6vpat6wPfiJsactTMMUJMTWPDqGyFqqnVImX 9OZBIlCR8aOPhlJhaliStIrD6UfvAcA8euzKFl/bAWS7w8pGZWvjAcVnDH1ioqpBU+q1IE48TaAf7 VlTZegFw+zmyzB8kJFDv6PvFGVL1mMNSGEWOvE6uZ9qHWaeMGCVMvhPxE1rd5zekKIU0oc8i4tabX 6UZqgz7Tw==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lOPAg-00CEuS-5I; Mon, 22 Mar 2021 18:20:58 +0000 Received: from ssl.serverraum.org ([176.9.125.105]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lOP9u-00CEie-HM for linux-mtd@lists.infradead.org; Mon, 22 Mar 2021 18:20:12 +0000 Received: from mwalle01.fritz.box (unknown [IPv6:2a02:810c:c200:2e91:fa59:71ff:fe9b:b851]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ssl.serverraum.org (Postfix) with ESMTPSA id DE73822253; Mon, 22 Mar 2021 19:20:07 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1616437208; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ly/ltM96HKL3LdgK2QYn3SH/X0EmhT5KbbgmWYv46uU=; b=hdYWOGTit3OOOvsID+aU6tkg3/qj3c+sb6BxHOVnDVAcoy9CqpWUT7Ra+DO/lHlmttxKfP h2td37iA9iLD6IiUedxWBXkZEuR2uDWz0VUtD7B1CGigtvPFg/qCMQZUdjZCNuSuN1yqRN ii/QzZwKcOhDKubbVvPfVL3KVemQyFg= From: Michael Walle To: linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Rob Herring , Srinivas Kandagatla , =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= , Michael Walle Subject: [RFC PATCH 3/4] dt-bindings: mtd: add OTP bindings Date: Mon, 22 Mar 2021 19:19:48 +0100 Message-Id: <20210322181949.2805-4-michael@walle.cc> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210322181949.2805-1-michael@walle.cc> References: <20210322181949.2805-1-michael@walle.cc> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210322_182011_243913_4A7BF766 X-CRM114-Status: GOOD ( 11.00 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org Flash devices can have one-time-programmable regions. Add a nvmem binding so they can be used as a nvmem provider. Signed-off-by: Michael Walle --- .../devicetree/bindings/mtd/mtd.yaml | 71 +++++++++++++++++++ 1 file changed, 71 insertions(+) diff --git a/Documentation/devicetree/bindings/mtd/mtd.yaml b/Documentation/devicetree/bindings/mtd/mtd.yaml index 321259aab0f6..2b852f91a6a9 100644 --- a/Documentation/devicetree/bindings/mtd/mtd.yaml +++ b/Documentation/devicetree/bindings/mtd/mtd.yaml @@ -21,6 +21,25 @@ properties: based name) in order to ease flash device identification and/or describe what they are used for. +patternProperties: + "^otp(-[0-9]+)?": + type: object + $ref: ../nvmem/nvmem.yaml# + + description: | + An OTP memory region. Some flashes provide a one-time-programmable + memory whose content can either be programmed by a user or is already + pre-programmed by the factory. Some flashes might provide both. + + properties: + compatible: + enum: + - mtd-user-otp + - mtd-factory-otp + + required: + - compatible + additionalProperties: true examples: @@ -36,4 +55,56 @@ examples: }; }; + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + flash@0 { + reg = <0>; + compatible = "some,flash"; + + otp { + compatible = "mtd-user-otp"; + #address-cells = <1>; + #size-cells = <1>; + + serial-number@0 { + reg = <0 16>; + }; + }; + }; + }; + + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + flash@0 { + reg = <0>; + compatible = "some,flash"; + + otp-1 { + compatible = "mtd-factory-otp"; + #address-cells = <1>; + #size-cells = <1>; + + electronic-serial-number@0 { + reg = <0 8>; + }; + }; + + otp-2 { + compatible = "mtd-user-otp"; + #address-cells = <1>; + #size-cells = <1>; + + mac-address@0 { + reg = <0 6>; + }; + }; + }; + }; + ... -- 2.20.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/