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=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS 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 ED17EC3279B for ; Wed, 4 Jul 2018 17:13:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ADA6E208B9 for ; Wed, 4 Jul 2018 17:13:29 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org ADA6E208B9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=deltatee.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752622AbeGDRNZ (ORCPT ); Wed, 4 Jul 2018 13:13:25 -0400 Received: from ale.deltatee.com ([207.54.116.67]:42816 "EHLO ale.deltatee.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752645AbeGDRNW (ORCPT ); Wed, 4 Jul 2018 13:13:22 -0400 Received: from guinness.priv.deltatee.com ([172.16.1.162]) by ale.deltatee.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1falL8-00082A-Ve; Wed, 04 Jul 2018 11:13:15 -0600 To: Andy Shevchenko Cc: Fabio Estevam , Horia Geanta , Aymen Sghaier , Andrew Morton , linux-kernel , Linux-Arch , "linux-ntb@googlegroups.com" , "open list:HARDWARE RANDOM NUMBER GENERATOR CORE" , Arnd Bergmann , Greg Kroah-Hartman , Dan Douglass , Herbert Xu , "David S. Miller" References: <20180622194752.11221-1-logang@deltatee.com> <13ea3f97-4a33-3a24-1b7e-b819be73d867@deltatee.com> <6e5224b9-343f-990c-19bd-fe37c6fbdc9b@deltatee.com> <7ddda181-6337-32cc-7a0d-43fc6a7ba78b@deltatee.com> <991b2298-bb3f-dad3-c93b-b43ee5f372de@deltatee.com> <55236e2b-a2a5-493a-5696-19c5926885b3@deltatee.com> From: Logan Gunthorpe Message-ID: Date: Wed, 4 Jul 2018 11:13:13 -0600 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 172.16.1.162 X-SA-Exim-Rcpt-To: davem@davemloft.net, herbert@gondor.apana.org.au, dan.douglass@nxp.com, gregkh@linuxfoundation.org, arnd@arndb.de, linux-crypto@vger.kernel.org, linux-ntb@googlegroups.com, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, aymen.sghaier@nxp.com, horia.geanta@nxp.com, festevam@gmail.com, andy.shevchenko@gmail.com X-SA-Exim-Mail-From: logang@deltatee.com Subject: Re: [PATCH v18 6/7] crypto: caam: cleanup CONFIG_64BIT ifdefs when using io{read|write}64 X-SA-Exim-Version: 4.2.1 (built Tue, 02 Aug 2016 21:08:31 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/4/2018 11:10 AM, Andy Shevchenko wrote: > We have an iDMA 32-bit hardware (see drivers/dma/dw/) which has an > extension 64-bit registers where only one of them has a specific bit > to "commit" the changes written to all of them. And by some very > unknown reason that bit is in lo part which automatically means we > must to write it last. And it supports both BE and LE? And in both cases it's the lo part? Logan