lkml.org 
[lkml]   [2018]   [May]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [BUG] i2c-hid: ELAN Touchpad does not work on ASUS X580GD
From
Date
On 05/15/2018 06:22 AM, Chris Chiu wrote:
> What if I change the 120MHz to 180MHz and then make sure that the I2C operates
> in target FS mode frequency 400kHz via scope? Would there be any side effect?
> Maybe some other busses frequency could be also affected and causing some other
> component malfunction?
>
Should be safe. It is only clock rate information when registering a
fixed clock with known rate in intel-lpss.c and i2c-designware uses that
info when calculating the timing parameters. I.e. it doesn't change any
internal clocks.

I'm trying to find a contact who can confirm what is the expected rate
of I2C input clock and is it common to all Cannon Lake HW.

--
Jarkko

\
 
 \ /
  Last update: 2018-05-15 12:21    [W:0.120 / U:0.184 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site