Messages in this thread | | | Subject | Re: [BUG] i2c-hid: ELAN Touchpad does not work on ASUS X580GD | From | Jarkko Nikula <> | Date | Tue, 15 May 2018 13:20:58 +0300 |
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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
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