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=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 B7B2BC433ED for ; Sat, 24 Apr 2021 11:06:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9D155613CB for ; Sat, 24 Apr 2021 11:06:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235270AbhDXLHW (ORCPT ); Sat, 24 Apr 2021 07:07:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56536 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231490AbhDXLHA (ORCPT ); Sat, 24 Apr 2021 07:07:00 -0400 Received: from ssl.serverraum.org (ssl.serverraum.org [IPv6:2a01:4f8:151:8464::1:2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9657CC061574; Sat, 24 Apr 2021 04:06:18 -0700 (PDT) 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 0643E22178; Sat, 24 Apr 2021 13:06:13 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1619262374; 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; bh=rZ+I/irwn/OCLHsOVLfWBRlbXKmaiZIgFDgdHK7w49o=; b=L5cygG4pEtkeFYLpTrmrNvYR3aHBmh1s1LeMsNhWANf6DBnBI4oR2YjGXrIJbWGWoXEjS+ sZsKhOulWcjWS0gjxcnaBJCxqB5qiHQ6p3efyTkiYzdT1phHLqTPaDCchGkqjWZx3xpyIO xjC7LgylUEOK/dzyZHg0Jgu8kYLGZWc= 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 , Michael Walle Subject: [PATCH v2 0/5] mtd: core: OTP nvmem provider support Date: Sat, 24 Apr 2021 13:06:03 +0200 Message-Id: <20210424110608.15748-1-michael@walle.cc> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam: Yes Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some flashes provide one (or more) OTP regions which can be used to store MAC addresses or serial numbers. Implement a NVMEM provider for this storage which then can be used by a network card to fetch the MAC adress for example. This is an example DT node: flash@0 { otp { compatible = "user-otp"; #address-cells = <1>; #size-cells = <1>; serial-number@0 { reg = <0x0 0x8>; }; }; }; Michael Walle (5): nvmem: core: allow specifying of_node dt-bindings: mtd: add YAML schema for the generic MTD bindings dt-bindings: mtd: add OTP bindings dt-bindings: mtd: spi-nor: add otp property mtd: core: add OTP nvmem provider support .../devicetree/bindings/mtd/common.txt | 16 +- .../bindings/mtd/jedec,spi-nor.yaml | 6 + .../devicetree/bindings/mtd/mtd.yaml | 89 +++++++++++ drivers/mtd/mtdcore.c | 148 ++++++++++++++++++ drivers/nvmem/core.c | 4 +- include/linux/mtd/mtd.h | 2 + include/linux/nvmem-provider.h | 2 + 7 files changed, 251 insertions(+), 16 deletions(-) create mode 100644 Documentation/devicetree/bindings/mtd/mtd.yaml -- 2.20.1