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=-14.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 01A71C64E90 for ; Mon, 30 Nov 2020 09:33:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A94AF2076E for ; Mon, 30 Nov 2020 09:33:26 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="wPG5J7kW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727836AbgK3JdZ (ORCPT ); Mon, 30 Nov 2020 04:33:25 -0500 Received: from mail.kernel.org ([198.145.29.99]:52602 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726756AbgK3JdZ (ORCPT ); Mon, 30 Nov 2020 04:33:25 -0500 Received: from dragon (80.251.214.228.16clouds.com [80.251.214.228]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 0F0E62076E; Mon, 30 Nov 2020 09:32:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606728764; bh=qpt/omNfokXd4Bg6icgGXINwG61fMEflfl5dg8+HUM8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=wPG5J7kWWr3HvZ3duEoSEyllmcXyvG2Ep0josjchXYuE3nmPQSaYKNQtkCWmj2MFv gHqahlE8bDoDsu8Zs24IU7585Lcv95CqgtClRxcL+3vPcFzEO9MhtuAToWlyrs4vzv re2QeZuG867MJge1PD90MLnGfz0UXlfCCElHHDiM= Date: Mon, 30 Nov 2020 17:32:39 +0800 From: Shawn Guo To: Ivan Zaentsev Cc: Russell King , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Evgeny Boger , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] ARM: mxs: Add serial number support for i.MX23, i.MX28 SoCs Message-ID: <20201130093238.GE4072@dragon> References: <20201116165826.51570-1-ivan.zaentsev@wirenboard.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201116165826.51570-1-ivan.zaentsev@wirenboard.ru> User-Agent: Mutt/1.9.4 (2018-02-28) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 16, 2020 at 07:58:26PM +0300, Ivan Zaentsev wrote: > i.MX23 and i.MX28 SoCs unique identifiers are factory-programmed > in On-Chip OTP memory. i.MX28's 64-bit unique id is in > HW_OCOTP_OPS2:HW_OCOTP_OPS3 (see MCIMX28 Ref. Man., sec. 20.4.22-23). > > i.MX23 provides 32-bit long unique id in HW_OCOTP_OPS3. > Though not clearly documented, there is a clue in sec. 35.9.3. > > The unique id is reported in /sys/devices/soc0/serial_number > and in /proc/cpuinfo > > Signed-off-by: Ivan Zaentsev > Suggested-by: Evgeny Boger Applied, thanks.