From patchwork Thu Oct 7 11:21:32 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mika Westerberg X-Patchwork-Id: 12541649 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82E65C433EF for ; Thu, 7 Oct 2021 11:21:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 64E8460F43 for ; Thu, 7 Oct 2021 11:21:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230087AbhJGLXa (ORCPT ); Thu, 7 Oct 2021 07:23:30 -0400 Received: from mga04.intel.com ([192.55.52.120]:24721 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240743AbhJGLX3 (ORCPT ); Thu, 7 Oct 2021 07:23:29 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10129"; a="224996409" X-IronPort-AV: E=Sophos;i="5.85,354,1624345200"; d="scan'208";a="224996409" Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Oct 2021 04:21:29 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,354,1624345200"; d="scan'208";a="568597047" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga002.fm.intel.com with ESMTP; 07 Oct 2021 04:21:26 -0700 Received: by black.fi.intel.com (Postfix, from userid 1001) id 0BEEA291; Thu, 7 Oct 2021 14:21:33 +0300 (EEST) From: Mika Westerberg To: Tudor Ambarus , Mark Brown Cc: Lee Jones , Michael Walle , Pratyush Yadav , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Jonathan Corbet , Mauro Lima , Alexander Sverdlin , Andy Shevchenko , Mika Westerberg , linux-mtd@lists.infradead.org, linux-spi@vger.kernel.org Subject: [PATCH v2 3/3] Documentation / MTD: Rename the intel-spi driver Date: Thu, 7 Oct 2021 14:21:32 +0300 Message-Id: <20211007112132.30934-4-mika.westerberg@linux.intel.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211007112132.30934-1-mika.westerberg@linux.intel.com> References: <20211007112132.30934-1-mika.westerberg@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Since the driver is renamed (and moved) update the BIOS upgrade guide accordingly from intel-spi to spi-intel. Keep the guide under MTD documentation because this is pretty much still about MTD and SPI-NOR. Signed-off-by: Mika Westerberg --- Documentation/driver-api/mtd/index.rst | 2 +- .../driver-api/mtd/{intel-spi.rst => spi-intel.rst} | 8 ++++---- 2 files changed, 5 insertions(+), 5 deletions(-) rename Documentation/driver-api/mtd/{intel-spi.rst => spi-intel.rst} (94%) diff --git a/Documentation/driver-api/mtd/index.rst b/Documentation/driver-api/mtd/index.rst index 436ba5a851d7..6a4278f409d7 100644 --- a/Documentation/driver-api/mtd/index.rst +++ b/Documentation/driver-api/mtd/index.rst @@ -7,6 +7,6 @@ Memory Technology Device (MTD) .. toctree:: :maxdepth: 1 - intel-spi + spi-intel nand_ecc spi-nor diff --git a/Documentation/driver-api/mtd/intel-spi.rst b/Documentation/driver-api/mtd/spi-intel.rst similarity index 94% rename from Documentation/driver-api/mtd/intel-spi.rst rename to Documentation/driver-api/mtd/spi-intel.rst index 0465f6879262..df854f20ead1 100644 --- a/Documentation/driver-api/mtd/intel-spi.rst +++ b/Documentation/driver-api/mtd/spi-intel.rst @@ -1,5 +1,5 @@ ============================== -Upgrading BIOS using intel-spi +Upgrading BIOS using spi-intel ============================== Many Intel CPUs like Baytrail and Braswell include SPI serial flash host @@ -11,12 +11,12 @@ avoid accidental (or on purpose) overwrite of the content. Not all manufacturers protect the SPI serial flash, mainly because it allows upgrading the BIOS image directly from an OS. -The intel-spi driver makes it possible to read and write the SPI serial +The spi-intel driver makes it possible to read and write the SPI serial flash, if certain protection bits are not set and locked. If it finds any of them set, the whole MTD device is made read-only to prevent partial overwrites. By default the driver exposes SPI serial flash contents as read-only but it can be changed from kernel command line, -passing "intel-spi.writeable=1". +passing "spi_intel.writeable=1". Please keep in mind that overwriting the BIOS image on SPI serial flash might render the machine unbootable and requires special equipment like @@ -32,7 +32,7 @@ Linux. serial flash. Distros like Debian and Fedora have this prepackaged with name "mtd-utils". - 3) Add "intel-spi.writeable=1" to the kernel command line and reboot + 3) Add "spi_intel.writeable=1" to the kernel command line and reboot the board (you can also reload the driver passing "writeable=1" as module parameter to modprobe).