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=-0.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 BDCFEC432C0 for ; Tue, 19 Nov 2019 04:05:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 872A222319 for ; Tue, 19 Nov 2019 04:05:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="HCeOD6Tu" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727619AbfKSEFm (ORCPT ); Mon, 18 Nov 2019 23:05:42 -0500 Received: from mail-vk1-f194.google.com ([209.85.221.194]:32827 "EHLO mail-vk1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727586AbfKSEFm (ORCPT ); Mon, 18 Nov 2019 23:05:42 -0500 Received: by mail-vk1-f194.google.com with SMTP id b64so4246509vkg.0 for ; Mon, 18 Nov 2019 20:05:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=LIrHQsnQ6V+BzwizI1F2l2BgBcA0oa40rJqoMOUJJDE=; b=HCeOD6Tu76jGBNN2vs/QFo9RoiWqR8su519GDX3xUu3RA+PhDKU8rfJhqf8Eytvv3m cBf/KnZYDLRM8fHHTz1XmuDdNZnJR4EsstGmBzLt4vkDu0qpNZGEyWLQGmDCfxkSN7JT FC/a1JUueTcjv7gMT8S3ww/7ayWyICVvJOioc= 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=LIrHQsnQ6V+BzwizI1F2l2BgBcA0oa40rJqoMOUJJDE=; b=gqVGty+xBH8wYB003LSIOO9z64ffEG0MBhCb5q4S9YF+hqd/fIteq6+fQRCPtrgCvR VV8q3WxQUabcL40qZ6dvahAQpdMBU+M/rbQPVLRysqdAL5E0iT7j/6uoNKaG+eTtEiaR 8UwjaIut9GWvPcJH7XsmZl/SMkgpqmG/P64SC9mMRSbcedGy243W9eSZ+KWicdHJYf5E /9H8lNQ5Us/IIUWFryj0hH1NlTgouyXdtPvKznWJxhFtH8DN0gF+4Ylk77AE45o7oXD2 HHOoqEymZYiAXy3/RoyvXVSGKaFYRCZ0e17InDTyn/IB6EfLu1YLgaYjfN97sUQlr6WC 0wtw== X-Gm-Message-State: APjAAAUS4ip+kmybaIGRf5MmHscvTyriIzXJybDAy96Nny7ViLyBYULt wv7b3XfYfILRB5IASZSDCdGPJRqrlG4oGUrLODbwMQ== X-Google-Smtp-Source: APXvYqxZjldlrzqFPxGpiEuY9hlr4GZvzrs6hiQjg39NYK3ahlpOSUNqc3f8+uwjpnSO86dKp8sB5dxpA5O5JpWNG1o= X-Received: by 2002:a1f:3f56:: with SMTP id m83mr13480943vka.51.1574136339707; Mon, 18 Nov 2019 20:05:39 -0800 (PST) MIME-Version: 1.0 References: <20191117033149.259303-1-ikjn@chromium.org> <20191117071442.GC496402@kroah.com> In-Reply-To: <20191117071442.GC496402@kroah.com> From: Ikjoon Jang Date: Tue, 19 Nov 2019 12:05:28 +0800 Message-ID: Subject: Re: [PATCH 0/2] usb: override hub device bInterval with device node To: Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Rob Herring , Mark Rutland , Alan Stern , Suwan Kim , "Gustavo A . R . Silva" , Johan Hovold , Nicolas Boitchat 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 On Sun, Nov 17, 2019 at 3:14 PM Greg Kroah-Hartman wrote: > > On Sun, Nov 17, 2019 at 11:31:49AM +0800, Ikjoon Jang wrote: > > This patchset enables hard wired hub device to use different bInterval > > from its descriptor when the hub has a combined device node. > > If it is a hard-wired hub, why can't you change that interval in the > firmware for that hub as you (as a platform owner) have control over > that? yes, actually that's the best option, but the hub devices were shipped with mask ROM we can't change the descriptors. > > thanks, > > greg k-h