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=-3.9 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,USER_AGENT_GIT 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 D2220C432C0 for ; Tue, 3 Dec 2019 10:15:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A98B6206DF for ; Tue, 3 Dec 2019 10:15:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="HoZE0eWA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726350AbfLCKPa (ORCPT ); Tue, 3 Dec 2019 05:15:30 -0500 Received: from mail-pf1-f195.google.com ([209.85.210.195]:43759 "EHLO mail-pf1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725957AbfLCKP3 (ORCPT ); Tue, 3 Dec 2019 05:15:29 -0500 Received: by mail-pf1-f195.google.com with SMTP id h14so1611227pfe.10 for ; Tue, 03 Dec 2019 02:15:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=9tRxVgE9HFG04agLIYkIxCuLcJXysbe1494NjR7f93c=; b=HoZE0eWAeqSX8yhZ60usZmY7HegNU7Eqm2zKr6UNbGa6jJJ8djzgc8nA81LFzKICE1 o8P8YM2zbFkdgnQCgwsGaREaihuGxajcKV2hb6odfKtXRUqEeIVirQBGkmIIL0nIdxxl h6lxB/KZHg6EjlFBLYdMgA8Bx2roM6720uk6E= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=9tRxVgE9HFG04agLIYkIxCuLcJXysbe1494NjR7f93c=; b=iPp5KZm2QmaiYud9rRLFvMTDEXU+Ab2UArmVHxM/yWDHZHkEEYRRi4vxEQ5cFTRUZg lW29v9/J1ZKd4XC3ZD+bNy7fZCH/URDx38U9FPOE6wmAmCy2WOhbF0kmnSzfCq6qzB60 98MLwFshYO0BKzaZo/ulNQ8jsQqH8Mgxm683vjqpa2bpvwLUjsRHIjHw4nBzwgrHu6n2 EQTcE9hAj10O+2q2TutYEUZYQ0yeiaAHYnbRLBYACF+Gl329Jt00gsOXj1AXu1/CKgKd jUVVA4EN9c0Tth4clPfH0Uv8WMTxmI/Y7b1WwEZ9/GPJ7OALgQG4t5QLRpVZ1zTWKk9R 8iOw== X-Gm-Message-State: APjAAAVuQS/YaIQ4v5F9lKqLYzJElI/PD4hU2WwVaVCvzkhN2bTTrfsC HEFFFP9hScn/D0hpqdcI71X7Ig== X-Google-Smtp-Source: APXvYqwIvn1rfxHeprF7KgmnJ16qeOEmel+VhkoLgbCYekUX2UE7TrBlBzPYR3CfkEETTAbDZd46VQ== X-Received: by 2002:a65:64d4:: with SMTP id t20mr4579380pgv.152.1575368127112; Tue, 03 Dec 2019 02:15:27 -0800 (PST) Received: from ikjn-p920.tpe.corp.google.com ([2401:fa00:1:10:254e:2b40:ef8:ee17]) by smtp.gmail.com with ESMTPSA id o7sm3248639pfg.138.2019.12.03.02.15.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Dec 2019 02:15:26 -0800 (PST) From: Ikjoon Jang To: linux-usb@vger.kernel.org, devicetree@vger.kernel.org Cc: GregKroah-Hartman , RobHerring , MarkRutland , AlanStern , SuwanKim , "GustavoA . R . Silva" , IkjoonJang , JohanHovold , linux-kernel@vger.kernel.org, drinkcat@chromium.org Subject: [PATCH v4 0/2] usb: override hub device bInterval with device Date: Tue, 3 Dec 2019 18:15:21 +0800 Message-Id: <20191203101521.198914-1-ikjn@chromium.org> X-Mailer: git-send-email 2.24.0.393.g34dc348eaf-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patchset enables hard wired hub device to use different bInterval from its descriptor when the hub has a combined device node. When we know reducing autosuspend delay for built-in HIDs is better for power saving, we can reduce it to the optimal value. But if a parent hub has a long bInterval, mouse lags a lot from more frequent autosuspend. So this enables overriding bInterval for a hard wired hub device only when we know that reduces the power consumption. Changes in v4 - use of_property_read_u32() instead of of_property_read_u8() Ikjoon Jang (2): dt-bindings: usb: add "hub,interval" property usb: overridable hub bInterval by device node Documentation/devicetree/bindings/usb/usb-device.txt | 4 ++++ drivers/usb/core/config.c | 9 +++++++++ 2 files changed, 13 insertions(+) -- 2.24.0.393.g34dc348eaf-goog