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=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 9E874C3F2D2 for ; Fri, 28 Feb 2020 17:17:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 729B8246A2 for ; Fri, 28 Feb 2020 17:17:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726843AbgB1RRY (ORCPT ); Fri, 28 Feb 2020 12:17:24 -0500 Received: from lhrrgout.huawei.com ([185.176.76.210]:2481 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725730AbgB1RRX (ORCPT ); Fri, 28 Feb 2020 12:17:23 -0500 Received: from lhreml705-cah.china.huawei.com (unknown [172.18.7.106]) by Forcepoint Email with ESMTP id 3B93C3EC7F4F8817DCB1; Fri, 28 Feb 2020 17:17:21 +0000 (GMT) Received: from lhreml724-chm.china.huawei.com (10.201.108.75) by lhreml705-cah.china.huawei.com (10.201.108.46) with Microsoft SMTP Server (TLS) id 14.3.408.0; Fri, 28 Feb 2020 17:17:20 +0000 Received: from [127.0.0.1] (10.210.169.120) by lhreml724-chm.china.huawei.com (10.201.108.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.1713.5; Fri, 28 Feb 2020 17:17:19 +0000 Subject: Re: [PATCH RFC 3/3] spi: HiSilicon v3xx: Use DMI quirk to set controller buswidth override bits To: Mark Brown CC: , , , , References: <1582903131-160033-1-git-send-email-john.garry@huawei.com> <1582903131-160033-4-git-send-email-john.garry@huawei.com> <20200228162057.GC4956@sirena.org.uk> From: John Garry Message-ID: Date: Fri, 28 Feb 2020 17:17:18 +0000 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.1.2 MIME-Version: 1.0 In-Reply-To: <20200228162057.GC4956@sirena.org.uk> Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.210.169.120] X-ClientProxiedBy: lhreml707-chm.china.huawei.com (10.201.108.56) To lhreml724-chm.china.huawei.com (10.201.108.75) X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 28/02/2020 16:20, Mark Brown wrote: > On Fri, Feb 28, 2020 at 11:18:51PM +0800, John Garry wrote: >> The Huawei D06 board (and variants) can support Quad mode of operation. >> >> Since we have no current method in ACPI SPI bus device resource description >> to describe this information, use DMI to detect the board, and set the >> controller buswidth override bits. > > Hopefully this is something that the ACPI people will be looking to > address going forwards :/ > Yeah, well I did mention the bugzilla [0] I raised for this in the cover letter; but I think that the new process workflows to raise feature requests in this way still needs to be formalized, so this may be blocked for now [1]. And unfortunately I can't actively participate in relevant standards WGs either, so if anyone else would like to assist, then that would great... BTW, I think that it might also be good to request a generic jedec-compatible SPI NOR part ACPI HID/CID here also. Thanks, John [0] https://bugzilla.tianocore.org/show_bug.cgi?id=2557 [1] https://edk2.groups.io/g/devel/message/53420 > > ______________________________________________________ > Linux MTD discussion mailing list > http://lists.infradead.org/mailman/listinfo/linux-mtd/ >