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Date: Tue, 3 Dec 2019 17:40:10 +0100 From: Johan Hovold <johan@...nel.org> To: Ikjoon Jang <ikjn@...omium.org> Cc: linux-usb@...r.kernel.org, devicetree@...r.kernel.org, GregKroah-Hartman <gregkh@...uxfoundation.org>, RobHerring <robh+dt@...nel.org>, MarkRutland <mark.rutland@....com>, AlanStern <stern@...land.harvard.edu>, SuwanKim <suwan.kim027@...il.com>, "GustavoA . R . Silva" <gustavo@...eddedor.com>, JohanHovold <johan@...nel.org>, linux-kernel@...r.kernel.org, drinkcat@...omium.org Subject: Re: [PATCH v4 0/2] usb: override hub device bInterval with device 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
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