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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,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 54093C433B4 for ; Wed, 7 Apr 2021 09:06:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2725F61205 for ; Wed, 7 Apr 2021 09:06:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349937AbhDGJHF (ORCPT ); Wed, 7 Apr 2021 05:07:05 -0400 Received: from relay11.mail.gandi.net ([217.70.178.231]:49803 "EHLO relay11.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1349931AbhDGJHD (ORCPT ); Wed, 7 Apr 2021 05:07:03 -0400 Received: from xps13.home (lfbn-tou-1-1325-59.w90-89.abo.wanadoo.fr [90.89.138.59]) (Authenticated sender: miquel.raynal@bootlin.com) by relay11.mail.gandi.net (Postfix) with ESMTPSA id AB147100017; Wed, 7 Apr 2021 09:06:51 +0000 (UTC) From: Miquel Raynal To: Manivannan Sadhasivam , miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com, robh+dt@kernel.org Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, boris.brezillon@collabora.com, Daniele.Palmas@telit.com, bjorn.andersson@linaro.org, Rob Herring Subject: Re: [PATCH v11 2/4] dt-bindings: mtd: Add a property to declare secure regions in NAND chips Date: Wed, 7 Apr 2021 11:06:51 +0200 Message-Id: <20210407090651.45586-1-miquel.raynal@bootlin.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210402150128.29128-3-manivannan.sadhasivam@linaro.org> References: MIME-Version: 1.0 X-linux-mtd-patch-notification: thanks X-linux-mtd-patch-commit: b'ee590106c331ad54df9da3052b5c52014b2edb0b' Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Fri, 2021-04-02 at 15:01:26 UTC, Manivannan Sadhasivam wrote: > On a typical end product, a vendor may choose to secure some regions in > the NAND memory which are supposed to stay intact between FW upgrades. > The access to those regions will be blocked by a secure element like > Trustzone. So the normal world software like Linux kernel should not > touch these regions (including reading). > > So let's add a property for declaring such secure regions so that the > drivers can skip touching them. > > Reviewed-by: Rob Herring > Signed-off-by: Manivannan Sadhasivam Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git nand/next, thanks. Miquel