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=-1.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED 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 C598DC169C4 for ; Thu, 31 Jan 2019 12:02:07 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 9AF45218D3 for ; Thu, 31 Jan 2019 12:02:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="QLUH1zun"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="FOsADNr6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9AF45218D3 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=qWF3IIY2HWdWEITO8IBhYyLlIITP6gd3OZEA+1Jr3I8=; b=QLUH1zunavc/cA Zh3s22Q0HvKVe2ZOBdFvKPodhd8ogwlW71+pM7U3INZSRccDuz+5Ya/Q8Rrzl6GVpSRJtjP+X1f6b KDkratWf+dY/Ho4Fr80MIRCJJXdjD8P3hPeHJsRGTYcrLiqRnXVZ7qnbb4G/A2CrKEpZoGfBKufNi BWL9PRA6HjGp77jrIC47TOioxcVxOdljDfV6o9D/7jGruPJYfqgz/zeC9+FC66JtfJEwAIXQ2iuUP XX1A5ahHUKMZy6sXL31yso2goZ5wC2NJeLJLDQPOTYX1qAbdqm/PLB4AgbcnoTU7uEFSBoK8JSO8Z jkwNiOiAqeuZ7jf5fxZA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gpB2j-0000xw-3c; Thu, 31 Jan 2019 12:02:05 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gpB2f-0000xQ-GR; Thu, 31 Jan 2019 12:02:03 +0000 Received: from bbrezillon (91-160-177-164.subs.proxad.net [91.160.177.164]) (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 201E5218D3; Thu, 31 Jan 2019 12:01:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1548936120; bh=v5FmM8JMbGh8lLfo05d49HXT0Cuq7wm2UMkiebkM2nY=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=FOsADNr6TrMlOSRO3YV0Heb0SOnP/CszRRKPRbnhhiVRUWq5kJIku8UMIW+cxbW1D VlNh2HWmTpyuNLAnFZAcfXdIRxavzOmIbRyGTxmn8cEL8cpG5Zc6TKHhKBnVVxIQo8 9au9Q6uYnHrmAxG0uKtHhhYdCAgqUMMXlxQ3jkGM= Date: Thu, 31 Jan 2019 13:01:50 +0100 From: Boris Brezillon To: Subject: Re: [PATCH 9/9] spi: atmel-quadspi: add support for sam9x60 qspi controller Message-ID: <20190131130137.52b592f8@bbrezillon> In-Reply-To: <20190130150818.24902-10-tudor.ambarus@microchip.com> References: <20190130150818.24902-1-tudor.ambarus@microchip.com> <20190130150818.24902-10-tudor.ambarus@microchip.com> X-Mailer: Claws Mail 3.16.0 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190131_040201_576935_DEE724A2 X-CRM114-Status: GOOD ( 11.01 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alexandre.belloni@bootlin.com, linux-kernel@vger.kernel.org, Ludovic.Desroches@microchip.com, broonie@kernel.org, linux-mtd@lists.infradead.org, linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, 30 Jan 2019 15:08:47 +0000 wrote: > +/* > + * atmel_qspi_set_address_mode() - set address mode. > + * @cfg: contains register values > + * @op: describes a SPI memory operation > + * > + * The controller allows 24 and 32-bit addressing while NAND-flash requires > + * 16-bit long. Handling 8-bit long addresses is done using the option field. > + * For the 16-bit addresses, the workaround depends of the number of requested > + * dummy bits. If there are 8 or more dummy cycles, the address is shifted and > + * sent with the first dummy byte. Otherwise opcode is disabled and the first > + * byte of the address contains the command opcode (works only if the opcode and > + * address use the same buswidth). The limitation is when the 16-bit address is > + * used without enough dummy cycles and the opcode is using a different buswidth > + * than the address. Too bad they didn't patch the IP to support 1 to 4 address bytes instead of only 3 or 4 :-(. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel