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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F1C7DC00528 for ; Mon, 31 Jul 2023 19:11:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Subject:To:From :Date:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=9/JUJj8JGmKrbpnlbKri3GU9q50aaL4332PX7jT+vz8=; b=Ug3Kxq8f7uqSI5 WYhptCDe2qD9jhTS/9qLT35AmrRbuOtyG4y459uOVawZb9TxDrTmos5i/Myuj3vre6Zk2XG4QM3NT 8A/5mIaEY7RbJwQDb3jlRGrj9xH5PKLdd4TiocQnhbpcRrbk8LARWQNzeClCcS2lQkj5P1B2rC+0H u3+bAQwrkqiZgxAkAfZ66Ijkcb6RTGWwCvV2KpcNJE+W08KwlRuWLz63oTCzMG/JPPB3BYfEZXpGY 0DAj2wcXKW7Z2vlcoZ5MoZcuBvQhghtjsUDmjKaQ41cmc8jH+H3aCZndLldcUh+On0UgmOHtvIdby lgbVZWU7HsDBFpNemiJw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qQYIb-00H4oX-1K; Mon, 31 Jul 2023 19:11:21 +0000 Received: from pidgin.makrotopia.org ([185.142.180.65]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qQYIX-00H4mH-2h for linux-mtd@lists.infradead.org; Mon, 31 Jul 2023 19:11:19 +0000 Received: from local by pidgin.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1qQYIK-0001gP-0Q; Mon, 31 Jul 2023 19:11:05 +0000 Date: Mon, 31 Jul 2023 20:10:47 +0100 From: Daniel Golle To: Richard Weinberger , Miquel Raynal , Vignesh Raghavendra , linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org Subject: [PATCH 0/6] mtd: ubi: allow UBI volumes to provide NVMEM Message-ID: MIME-Version: 1.0 Content-Disposition: inline X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230731_121117_871427_462F0654 X-CRM114-Status: GOOD ( 15.52 ) 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 The series is a follow-up and contains all patches of the previous series "mtd: ubi: behave like a good MTD citizen"[1] which was meant in preparation for implementing the NVMEM provider. The goal is to support embedded Linux devices which got NVMEM bits stored inside a UBI volume. Representing the UBI volume in the Device Tree, adding a phandle to be referenced by NVMEM consumers allows such devices to come up with their correct MAC addresses and device-specific Wi-Fi calibration data loaded. In order to be available for other drivers, attaching UBI devices has to be moved from late_initcall (which is too late for other drivers) to happen earlier. As an alternative to the existing kernel cmdline parameter the Device Tree property 'compatible = "linux,ubi";' inside an MTD partition can be used to have that MTD device attached as UBI device. MTD partitions which serve as UBI devices may have a "volumes" firmware subnode with volumes which may be compatible with "nvmem-cells". In this way, other drivers (think: Ethernet, Wi-Fi) can resolve and acquire NVMEM bits using the usual device tree phandle, just this time the NVMEM content is read from a UBI volume. [1]: https://patchwork.ozlabs.org/project/linux-mtd/list/?series=353177&state=%2A&archive=both Daniel Golle (6): mtd: ubi: block: don't return on error when removing mtd: ubi: block: use notifier to create ubiblock from parameter mtd: ubi: attach MTD partition from device-tree mtd: ubi: introduce pre-removal notification for UBI volumes mtd: ubi: populate ubi volume fwnode mtd: ubi: provide NVMEM layer over UBI volumes drivers/mtd/ubi/Kconfig | 12 +++ drivers/mtd/ubi/Makefile | 1 + drivers/mtd/ubi/block.c | 186 +++++++++++++++++++++++--------------- drivers/mtd/ubi/build.c | 160 ++++++++++++++++++++++++--------- drivers/mtd/ubi/cdev.c | 4 +- drivers/mtd/ubi/nvmem.c | 189 +++++++++++++++++++++++++++++++++++++++ drivers/mtd/ubi/ubi.h | 6 +- drivers/mtd/ubi/vmt.c | 36 ++++++++ include/linux/mtd/ubi.h | 2 + 9 files changed, 477 insertions(+), 119 deletions(-) create mode 100644 drivers/mtd/ubi/nvmem.c -- 2.41.0 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/