Hi, Frans, It can only be delay for the firmware implementation now. Hn.chen -----Original Message----- From: Frans Klaver [mailto:fransklaver@xxxxxxxxx] Sent: Friday, June 12, 2015 6:02 PM To: Hn Chen Cc: linux-input@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; Dmitry Torokhov Subject: Re: [PATCH v5] Fix the resolution issue in ChromeOS On Wed, Jun 10, 2015 at 4:51 PM, Hn Chen <hn.chen@xxxxxxxxxxxxxxx> wrote: > Hi, Frans, > >> Alright, I was just wondering. Seems like a waste to be waiting for something that's already finished ;-). >> There's of course a risk that times may fluctuate between firmware versions. Did you take that into account in the code? >> Or is there a hard maximum time for these operations defined for the firmware? > Thanks for your reminding. > After I check with the firmware guy, I will change the value of delay. > What we do here is to read the data from flash and calculate their > checksum and will cost about 6ms for 1024 bytes. So there is a delay for 10 ms per 1024 bytes. > But in some situation, the controller will change it's running > frequency(like do noise immunity), 10ms could be too margin. Any chance this sort of thing could be detected? ��.n��������+%������w��{.n�����{��)��^n�r������&��z�ޗ�zf���h���~����������_��+v���)ߣ�