From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="LIraSdGE" Received: from mail-ej1-x630.google.com (mail-ej1-x630.google.com [IPv6:2a00:1450:4864:20::630]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 15DAD19A8 for ; Thu, 7 Dec 2023 09:24:54 -0800 (PST) Received: by mail-ej1-x630.google.com with SMTP id a640c23a62f3a-a1caddd6d28so160042266b.1 for ; Thu, 07 Dec 2023 09:24:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1701969892; x=1702574692; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=OSaCKj49TdBQE/wW0nBbIlYjNisy5X/gJJF/8cHix4E=; b=LIraSdGECWO5t07MKS3BLatmmOjnaU/i9lSaejma3SuvcK292+cy6HZfwVlTMs2Ajk Y+gJwKny2rBCWoe3d/VCuueff38nvjeSD6o0QKl7N0Xm7O6ZCxHXKorPx5x30dWOnO8g rhN/KwmgeLTLJHZYpiFhboBk/kUIG8Rjetu8rKys8fMtuncgFlijUmzduv2JIjzBrZz4 vIdZb2ndFYx2cmlSD2k9m+hlZ7yq6nyPowWnvJ2pCOU/j7CHTSTy8ZS66dzb8mdMo8iL eSl5LWwg76mxf/X/Yr60tw1Klo7QVULLD8Z9SxB+2mJ5YkzVwoI6y7kffEFq3MdwLT3T 0elQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701969892; x=1702574692; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=OSaCKj49TdBQE/wW0nBbIlYjNisy5X/gJJF/8cHix4E=; b=MPPkKwDLlrcTl8cjxTzYqUJ+s9VHcH4ItAHLNhjtgEREY11mH/RouAHGj9a/66+lEZ aZg0q5ZRSga9Y4MFCFUrVz1xeK7Wiu8LSv3YXN8CgHCmYSQUneDGaDRxh5JeIhNc5OjN X/B6eLeayKgYcNWEK3dVMXaWasKK/avtYS/MLHggRPdTeB2NHHMKATTJQfSqjClFCOou JjIgv9Mg3iAGmAsYRPGtcb9rJf128HqbuArBnFk8i1AUMKC3gjPKAh/OTi4U/6sAgby4 2DvG7mf80YblePf5C1qRPhvUP4mkUK+c6Oj35O9dlV0zaadOV82cA3KhGXDjkIbc8BWz dmWA== X-Gm-Message-State: AOJu0YzPJVPmH6o/zkAFKvMeCfKPN/m+HOiNGXWy1S/pIBvk+SdBNxUb PDKw05xlD61aCibxA9JMHVdYIg== X-Google-Smtp-Source: AGHT+IEtTd+pA4mJobxUqdqM7SglT4EunogmAQ8lpbogM+tHlUMEk4Qwu5mWYwLQ9J+s2P4F/4V7+g== X-Received: by 2002:a17:907:5020:b0:a19:9b79:8b5d with SMTP id fw32-20020a170907502000b00a199b798b5dmr1010958ejc.110.1701969892432; Thu, 07 Dec 2023 09:24:52 -0800 (PST) Received: from [192.168.2.107] ([79.115.63.75]) by smtp.gmail.com with ESMTPSA id a14-20020a170906684e00b009fd0102f71asm1078898ejs.176.2023.12.07.09.24.49 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 07 Dec 2023 09:24:50 -0800 (PST) Message-ID: <797b9023-e56b-404b-bb4e-6e178b7ada88@linaro.org> Date: Thu, 7 Dec 2023 17:24:48 +0000 Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v11 07/10] mtd: spi-nor: Add stacked memories support in spi-nor Content-Language: en-US To: Amit Kumar Mahapatra , broonie@kernel.org, pratyush@kernel.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com, sbinding@opensource.cirrus.com, lee@kernel.org, james.schulman@cirrus.com, david.rhodes@cirrus.com, rf@opensource.cirrus.com, perex@perex.cz, tiwai@suse.com Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, michael@walle.cc, linux-mtd@lists.infradead.org, nicolas.ferre@microchip.com, alexandre.belloni@bootlin.com, claudiu.beznea@tuxon.dev, michal.simek@amd.com, linux-arm-kernel@lists.infradead.org, alsa-devel@alsa-project.org, patches@opensource.cirrus.com, linux-sound@vger.kernel.org, git@amd.com, amitrkcian2002@gmail.com References: <20231125092137.2948-1-amit.kumar-mahapatra@amd.com> <20231125092137.2948-8-amit.kumar-mahapatra@amd.com> From: Tudor Ambarus In-Reply-To: <20231125092137.2948-8-amit.kumar-mahapatra@amd.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 11/25/23 09:21, Amit Kumar Mahapatra wrote: > The current implementation assumes that a maximum of two flashes are > connected in stacked mode and both the flashes are of same make but can > differ in sizes. So, except the sizes all other flash parameters of both > the flashes are identical. Too much restrictions, isn't it? Have you thought about adding a layer on top of SPI NOR managing the stacked/parallel flashes?