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=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 2AD4BC43215 for ; Tue, 3 Dec 2019 16:40:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ECE87206EC for ; Tue, 3 Dec 2019 16:40:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575391212; bh=yDHTVydKpHo2PrvhBJGjjNsmGzjZA85DLCYv38qIEQk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=2AIlP4PeXO8BQj4XWED9FyxaGdDh7osbrLxX9gzq559gxpfrfxlSJv7ylyCk2tWm5 uFaso/fkT840seW6leZ6OSgCASGdCdLtQQXuFIWv0lbghbCEa9acbRMlUhcLMIWlQU 8Ghu6jRYrw241H1PAAAgk1kqVT/w1DieI6J8eYbE= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726707AbfLCQkG (ORCPT ); Tue, 3 Dec 2019 11:40:06 -0500 Received: from mail-lf1-f67.google.com ([209.85.167.67]:44976 "EHLO mail-lf1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726186AbfLCQkG (ORCPT ); Tue, 3 Dec 2019 11:40:06 -0500 Received: by mail-lf1-f67.google.com with SMTP id v201so3490873lfa.11; Tue, 03 Dec 2019 08:40:04 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=MZBSf17SGx1+gGK9WEkvD1hP9LHGvHUx0+b+fQE1FCQ=; b=potk/3GxkmVkK1+c6BgADK2LIkUF/uZGUpTHRnkaZxDdGE3oOSEISUSBE+50Z6RWQI hvHeTGOsJt7W6uvhRdl3FcaAsv2iB6kTwntN3i8B+F0yl0aSpV99FJ7ePAQi0fXgCIkE eCyVIfW7VesSgMUAl3DX0MffjMObOP3qJbiPHXlyqr/nzAP0j7R4yHNbldGiHIMtH1i4 ihSXM2YHA4iWB8f/NE7iYs+RORPDDNK9ZOmT7oqwHFOvnOnlBB15Tnq1W1s/cLjhdMEf piAeFOsVV3tZKTJ+gNEoDw0bKBfv6PQAmjtmFZ0gKiwt1g1RfbWtP5hZ98ArDkIT7J+5 x1kQ== X-Gm-Message-State: APjAAAVAVEQoGs1i3NQlG61RMd0aEJHxCvTwH8EG9zr3IsJHc22KowmP JmP+Mn7qx42QFv3ydvUNdhI= X-Google-Smtp-Source: APXvYqxyY0FsNBQ5B+M/BIs5YSCj7DolLdF+U+1m/LqeKimNoBvyR/jhYgObE/XP2knI26kfXxHYEg== X-Received: by 2002:ac2:4945:: with SMTP id o5mr3190816lfi.93.1575391203989; Tue, 03 Dec 2019 08:40:03 -0800 (PST) Received: from xi.terra (c-14b8e655.07-184-6d6c6d4.bbcust.telenor.se. [85.230.184.20]) by smtp.gmail.com with ESMTPSA id h7sm1675207lfj.29.2019.12.03.08.40.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Dec 2019 08:40:03 -0800 (PST) Received: from johan by xi.terra with local (Exim 4.92.3) (envelope-from ) id 1icBDe-00019s-CR; Tue, 03 Dec 2019 17:40:10 +0100 Date: Tue, 3 Dec 2019 17:40:10 +0100 From: Johan Hovold To: Ikjoon Jang Cc: linux-usb@vger.kernel.org, devicetree@vger.kernel.org, GregKroah-Hartman , RobHerring , MarkRutland , AlanStern , SuwanKim , "GustavoA . R . Silva" , JohanHovold , linux-kernel@vger.kernel.org, drinkcat@chromium.org Subject: Re: [PATCH v4 0/2] usb: override hub device bInterval with device Message-ID: <20191203164010.GG10631@localhost> References: <20191203101521.198914-1-ikjn@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191203101521.198914-1-ikjn@chromium.org> Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On Tue, Dec 03, 2019 at 06:15:21PM +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. > > 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() What changed in the previous versions? Johan