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 0AB21C432C0 for ; Thu, 21 Nov 2019 05:10:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CD17A2070E for ; Thu, 21 Nov 2019 05:10:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="L/OQosoC" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726396AbfKUFKq (ORCPT ); Thu, 21 Nov 2019 00:10:46 -0500 Received: from mail-pg1-f194.google.com ([209.85.215.194]:41117 "EHLO mail-pg1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726290AbfKUFKp (ORCPT ); Thu, 21 Nov 2019 00:10:45 -0500 Received: by mail-pg1-f194.google.com with SMTP id 207so965197pge.8 for ; Wed, 20 Nov 2019 21:10:44 -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=msCu0QpwL+TYH2H0S7A59z3R+0BjpgNq8syAjSNxH5A=; b=L/OQosoCwe6MxD5gy1A0NnLJOkaGqqtWsSD3IhTXsXHBvOFV0eT/u4HEoDnvJmMAJn YGM2wbDk98aSrs1dW2Px/8o6lCMHN97PlNFo1yKoFWgF5BRG/CWgVPgafPfqqXKOfw61 qWYZW4aQ5Zkj6KYGcwlV/6dc9qH0PaNin8UaA= 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=msCu0QpwL+TYH2H0S7A59z3R+0BjpgNq8syAjSNxH5A=; b=K+9uFd7X9UgZebtTgvPiyuIy3CoWXYRG4/CbkxggdE8MGuTf3n8BTNLIQSAaLa7Sta xIV1lKTUH9lcRS3CZ+JRG1jPJCJV0rsWpyrO94h+GCTIO52h6Fqj4G0H7TrO0kgOAQ+c SzQHKfL6+GkVWRaqraL8AFTWX26x+kLDE2+b7OLrcXerKbfa0uM/AeY6R6mFFKzLf2Dx ySP7cJGgP1ZVSXxB5DH3MKmeglPPbU/6wEELODPQCgbKco9FcbYr/v3gm1TDQaJh7pj5 u6yehTeik665rIFg0aoIV1Ge3jOvHCkABh12Lj2OVXoO92dywC8nkTj+xZJRKbzq9wz3 33/g== X-Gm-Message-State: APjAAAWxyrhM8c8xCoa+TkwReW22tL0AmOgMWK82gHU6UZX9cXARFSx5 3utdkIUHE0sIj8jA2rvFxGs05w== X-Google-Smtp-Source: APXvYqzxE1UUlMo4o5lL/9FGxnbsO+/yKZx/OP3POMctvwZK6KLKxRCCVHn6zJamnA++y2PEy02TYg== X-Received: by 2002:a62:6385:: with SMTP id x127mr8745328pfb.244.1574313043585; Wed, 20 Nov 2019 21:10:43 -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 x2sm1329257pfj.90.2019.11.20.21.10.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 20 Nov 2019 21:10:42 -0800 (PST) From: Ikjoon Jang To: linux-usb@vger.kernel.org Cc: GregKroah-Hartman , RobHerring , MarkRutland , AlanStern , SuwanKim , "GustavoA . R . Silva" , IkjoonJang , JohanHovold , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, drinkcat@chromium.org Subject: [PATCH v2 0/2] usb: override hub device bInterval with device Date: Thu, 21 Nov 2019 13:06:34 +0800 Message-Id: <20191121050634.108727-1-ikjn@chromium.org> X-Mailer: git-send-email 2.24.0.432.g9d3f5f5b63-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. 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 | 6 ++++++ 2 files changed, 10 insertions(+) -- 2.24.0.432.g9d3f5f5b63-goog