From patchwork Fri Nov 22 04:24:17 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ikjoon Jang X-Patchwork-Id: 1199204 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=chromium.org header.i=@chromium.org header.b="QzZFd4Wt"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 47K3Gz36Wcz9sPc for ; Fri, 22 Nov 2019 15:24:26 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726539AbfKVEYY (ORCPT ); Thu, 21 Nov 2019 23:24:24 -0500 Received: from mail-pg1-f195.google.com ([209.85.215.195]:35969 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726408AbfKVEYY (ORCPT ); Thu, 21 Nov 2019 23:24:24 -0500 Received: by mail-pg1-f195.google.com with SMTP id k13so2742054pgh.3 for ; Thu, 21 Nov 2019 20:24:24 -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=QzZFd4Wt0cjTgBvP+UjZIpNq8OdeXFjyWBUGkwQNhDzUO/E5lE8HQ3n2patQ2M+r9m zXesz8Y+XLXINZllCrFNb573zAuEP14nU5vMhA35zfEDPfg0zZ0Mj2l4Dx8SvnN8BxrK /62XxHPvUc/VlvonA0ZXgPMTuiQ5qOqgujCZc= 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=qdpKU5WKgJAqiKnCOEVvxaS/dYoycEl+IkgoJNkXuc2SJlgCXtgLihU1614gqnLMsa +ba5AWFrwgABsjHYq9Q9cbvrDA0zJbe9uC/SBhUaEgZaxcBGcmBhaA0Ybhqmc41y/o96 kD4tZYaBQ79deDqLRp2ni8Xn2/rVodCieh7p8Lct/OB1dJaEwpNqg9N7KySV2BMEUGE8 i3VXXw7iFQdnVQYQOK8PgYPYYRjiN5OOXdyL7kcQNuYkNjMZZNpOPajsaIL35MTLbVyi fN66oSK8R3od2fa7GrEDj7KBf/cGKhCKrhwrGCQixu6kwmqbh8gs3m9+jb8EIezFRfq/ EYEQ== X-Gm-Message-State: APjAAAXhVv/Aq2qZdDbJEu3b8QkeuEe7xNXaUf4VFbZGvFHbkjR6Kd+o qDjWrtnrXW5iD2lOhmn/XRToZg== X-Google-Smtp-Source: APXvYqxFlBSAySyw6HLdZ4UGY2AFeTgBXYlW07/IOFHfDkALCilbw+dFP9Dlb7LglnlGPhiKvMMAAg== X-Received: by 2002:a63:5801:: with SMTP id m1mr13457168pgb.139.1574396663849; Thu, 21 Nov 2019 20:24:23 -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 r28sm5435801pfl.37.2019.11.21.20.24.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 Nov 2019 20:24:23 -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 v3 0/2] usb: override hub device bInterval with device Date: Fri, 22 Nov 2019 12:24:17 +0800 Message-Id: <20191122042417.205481-1-ikjn@chromium.org> X-Mailer: git-send-email 2.24.0.432.g9d3f5f5b63-goog MIME-Version: 1.0 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@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(+)