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 430CACA0EC2 for ; Fri, 8 Aug 2025 10:46:48 +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:Date:References :In-Reply-To:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=b5PqF8IDqPEVUHcYzdNmVLMSIYOUV1IPPzGkY6cT97E=; b=fmpGgL7Ghw5jzB ppfZk2huV00G0B/U9rRsGOjfnqMDHvm2EOUQhD6iA5k857lV18eKNbyYFLuXkOePSV/ROS7bz5Hqs Fh+FtnJ9WoJZ02Hwv5AKTNYKTffypSjMBSThUpMHG6eT0TbLqy3PFqvndaUhFOa8g8DTkQ9o3ZzAK c2VSSsyE1JtJ+xOmdYUQwRJxqnJP1D3ZDMen8QIGAsfoH24wWaW69fCToB0Ixff1Ddh4+t/HwcuKk 57B7003VGg/NY6BXRnrM/qhzi2w6EJKDQXelvGWfNNixjf3ONN9/JuAnMSnNMM0TPKVohfON97aBq 30byMO9WZPcAdwpBUzHg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1ukKcW-00000002ask-0wPb; Fri, 08 Aug 2025 10:46:44 +0000 Received: from relay15.mail.gandi.net ([2001:4b98:dc4:8::235]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1ukK8N-00000002XmW-1EXe for linux-mtd@lists.infradead.org; Fri, 08 Aug 2025 10:15:37 +0000 Received: by mail.gandi.net (Postfix) with ESMTPSA id BCE5E43145; Fri, 8 Aug 2025 10:15:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1754648132; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=l+/cjitHQaCn5Z2qFtrgnop6PRPmcwaQTWfAxvoFm44=; b=E0O0eyTL5CSCW9zYLfXjJYG+MrSNMES9PWx+hdfNrHkAk29sheGYLyET1egCdCzjJERF9/ E99actiq6It4TqLFk9JQZr4lmPAZpDQmbwvWj74Ta4k2ATEdB8ozfbblfkU720JNdvSvVo uuctgDRTuCftk4/n0hpcwC+QqCEMv80hwmlTLwlGq/5yXM+4nS6vA0tWIk6Dh+8CJJ7HVO xyefbxaDrI6vqap8R4hffTdyKBKuDgn4INe2qj6GaO/WsAnFYsdcJgMVWmW79bgjgux2Oi o+7lmm1PgUgF3Cd37RPS3OhbctCwTFW4YYEeKfVhude3mfs6YMwrjmPwF9LqOg== From: Miquel Raynal To: Cheng Ming Lin Cc: vigneshr@ti.com, linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, richard@nod.at, alvinzhou@mxic.com.tw, leoyu@mxic.com.tw, Cheng Ming Lin Subject: Re: [PATCH 1/2] mtd: spi-nand: Add support for randomizer In-Reply-To: <20250808095503.906244-2-linchengming884@gmail.com> (Cheng Ming Lin's message of "Fri, 8 Aug 2025 17:55:02 +0800") References: <20250808095503.906244-1-linchengming884@gmail.com> <20250808095503.906244-2-linchengming884@gmail.com> User-Agent: mu4e 1.12.7; emacs 30.1 Date: Fri, 08 Aug 2025 12:15:30 +0200 Message-ID: <878qjuazlp.fsf@bootlin.com> MIME-Version: 1.0 X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtdefgdduvdefheegucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufgjfhgffffkgggtgfesthhqredttderjeenucfhrhhomhepofhiqhhuvghlucftrgihnhgrlhcuoehmihhquhgvlhdrrhgrhihnrghlsegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpeffgefhjedtfeeigeduudekudejkedtiefhleelueeiueevheekvdeludehiedvfeenucfkphepledvrddukeegrddutdekrdeiheenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeelvddrudekgedruddtkedrieehpdhhvghloheplhhotggrlhhhohhsthdpmhgrihhlfhhrohhmpehmihhquhgvlhdrrhgrhihnrghlsegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopeekpdhrtghpthhtoheplhhinhgthhgvnhhgmhhinhhgkeekgeesghhmrghilhdrtghomhdprhgtphhtthhopehvihhgnhgvshhhrhesthhirdgtohhmpdhrtghpthhtoheplhhinhhugidqmhhtugeslhhishhtshdrihhnfhhrrgguvggrugdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehrihgthhgrrhgusehnohgurdgrt hdprhgtphhtthhopegrlhhvihhniihhohhusehmgihitgdrtghomhdrthifpdhrtghpthhtoheplhgvohihuhesmhigihgtrdgtohhmrdhtfidprhgtphhtthhopegthhgvnhhgmhhinhhglhhinhesmhigihgtrdgtohhmrdhtfi X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250808_031535_863339_45308594 X-CRM114-Status: UNSURE ( 7.23 ) X-CRM114-Notice: Please train this message. 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emacs 30.1 Date: Fri, 08 Aug 2025 12:15:30 +0200 Message-ID: <878qjuazlp.fsf@bootlin.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-GND-State: clean X-GND-Score: -100 X-GND-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtdefgdduvdefheegucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuifetpfffkfdpucggtfgfnhhsuhgsshgtrhhisggvnecuuegrihhlohhuthemuceftddunecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufgjfhgffffkgggtgfesthhqredttderjeenucfhrhhomhepofhiqhhuvghlucftrgihnhgrlhcuoehmihhquhgvlhdrrhgrhihnrghlsegsohhothhlihhnrdgtohhmqeenucggtffrrghtthgvrhhnpeffgefhjedtfeeigeduudekudejkedtiefhleelueeiueevheekvdeludehiedvfeenucfkphepledvrddukeegrddutdekrdeiheenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepihhnvghtpeelvddrudekgedruddtkedrieehpdhhvghloheplhhotggrlhhhohhsthdpmhgrihhlfhhrohhmpehmihhquhgvlhdrrhgrhihnrghlsegsohhothhlihhnrdgtohhmpdhnsggprhgtphhtthhopeekpdhrtghpthhtoheplhhinhgthhgvnhhgmhhinhhgkeekgeesghhmrghilhdrtghomhdprhgtphhtthhopehvihhgnhgvshhhrhesthhirdgtohhmpdhrtghpthhtoheplhhinhhugidqmhhtugeslhhishhtshdrihhnfhhrrgguvggrugdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehrihgthhgrrhgusehnohgurdgrt hdprhgtphhtthhopegrlhhvihhniihhohhusehmgihitgdrtghomhdrthifpdhrtghpthhtoheplhgvohihuhesmhigihgtrdgtohhmrdhtfidprhgtphhtthhopegthhgvnhhgmhhinhhglhhinhesmhigihgtrdgtohhmrdhtfi Hi Cheng Ming, On 08/08/2025 at 17:55:02 +08, Cheng Ming Lin w= rote: > From: Cheng Ming Lin > > Add randomizer operation support for user data scrambling. > > For more high-reliability concern, if subpage write not available with > hardware ECC and then to enable randomizer is recommended by default. Could we adopt a helper that allows to enable and disable the randomizer? I have no use case in mind right now, but I feel like it would be a better approach. Thanks, Miqu=C3=A8l