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=-1.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,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 33ACEC4646D for ; Fri, 10 Aug 2018 10:26:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DA295223F9 for ; Fri, 10 Aug 2018 10:26:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=linaro.org header.i=@linaro.org header.b="eKIlYLmP" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DA295223F9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org 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 S1727688AbeHJMzO (ORCPT ); Fri, 10 Aug 2018 08:55:14 -0400 Received: from mail-it0-f68.google.com ([209.85.214.68]:36767 "EHLO mail-it0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726963AbeHJMzO (ORCPT ); Fri, 10 Aug 2018 08:55:14 -0400 Received: by mail-it0-f68.google.com with SMTP id p81-v6so1994005itp.1 for ; Fri, 10 Aug 2018 03:25:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Qiie/80O+NQyatAAf/UTsMok73ZfNfGd8hIkUp1nGs8=; b=eKIlYLmPcT98fHUVszGxFYWD8jeldXNS5c1XsgJmEi5XDQ1c14dVzVQuK3rEoDRZ7X NykONpmns1VnEsysBccW2m+YJwNRVKScxEA6Lv5acLVdJ6ffTuPKK5OfumNuNErnpaiH CJChSRbaU58yh6y1tGcYxcp8IgGAYLAvnFIvk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Qiie/80O+NQyatAAf/UTsMok73ZfNfGd8hIkUp1nGs8=; b=J1kelVqo92mZr3Lg14a3ooIvXIDgSMhpPMdZgHYkYgI6UkdMC+4eEbCUxZgNZlPPVa zwyfxIcH2SDEp9DpWV0kmk2ODgpEIrCwBr68sykYXyPbSQhL2i/UxbdRmrQd1gGBc4+Z UPdiAHIRdYJVw8un/8wU/5av7KB/gUmfqNh8JC1TRDZEyJe7debRa9u69a7EXIXKHQmO p2x/16L5LrblxNxTwqiqXxQAJZhox+VIoTREkmInFkj5VmhR7kNpxq+/gfticV8qRuSX Fd9LUfUgN/wqZHolRH+FhbXi6fddxBZ/Ztr/Lt9znbb8fGyXVisbCZhu4sf1TIK8ysI9 TXkA== X-Gm-Message-State: AOUpUlFRYNbmIH0MEaKkOnfk3DA0VttF2R5O1Lzhm342+J2tHYi4S/xG pzfvxqhqi1IAbAp4t4nOxuTb9MAMliGLtzRpLI/qhg== X-Google-Smtp-Source: AA+uWPxsahDXEw0KDI5CtoBliDTabP/Ul4TC0EomVFLdXuheFw5pvx/9Mfl0+phiblaJLshKLvIxunJpX8DA2y5bbFA= X-Received: by 2002:a24:2c49:: with SMTP id i70-v6mr1612529iti.135.1533896758189; Fri, 10 Aug 2018 03:25:58 -0700 (PDT) MIME-Version: 1.0 References: <20180718235710.18242-1-jmkrzyszt@gmail.com> <20180806222918.12644-1-jmkrzyszt@gmail.com> <20180806222918.12644-6-jmkrzyszt@gmail.com> In-Reply-To: <20180806222918.12644-6-jmkrzyszt@gmail.com> From: Linus Walleij Date: Fri, 10 Aug 2018 12:25:45 +0200 Message-ID: Subject: Re: [RFC PATCH v2 05/12] mtd: rawnand: ams-delta: use GPIO API for data read/write To: Janusz Krzysztofik Cc: Boris Brezillon , Jonathan Corbet , =?UTF-8?Q?Miqu=C3=A8l_Raynal?= , Richard Weinberger , David Woodhouse , Brian Norris , Mark Vasut , ext Tony Lindgren , Aaro Koskinen , Linux ARM , Linux-OMAP , linux-mtd@lists.infradead.org, linux-doc@vger.kernel.org, "open list:GPIO SUBSYSTEM" , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Archived-At: List-Archive: List-Post: On Tue, Aug 7, 2018 at 12:29 AM Janusz Krzysztofik wrote: > Don't readw()/writew() data directly from/to GPIO port which is under > control of gpio-omap driver, use GPIO API instead. > > Degrade of performance on Amstrad Delta is completely not acceptable. > > The driver should work with any 8+-bit bidirectional GPIO port, not > only OMAP. > > Signed-off-by: Janusz Krzysztofik Reviewed-by: Linus Walleij Yours, Linus Walleij