Date: Wed, 11 Sep 2019 22:19:25 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 240339] [ig4] I2C2 (touchpad bus) broken on the Google Pixelbook (Sunrise Point PCH) Message-ID: <bug-240339-227-n2vv5OiLAt@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-240339-227@https.bugs.freebsd.org/bugzilla/> References: <bug-240339-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D240339 --- Comment #14 from Vladimir Kondratyev <wulf@freebsd.org> --- (In reply to Greg V from comment #12) > Seems like ig4 is innocent Not so innocent. You are at least 5-th man who has tried iichid and has bit= ten by SDA_HOLD issue. Can you check and post here the value of this register r= ight after IG4_REG_RESETS_SKL is written. In my case it is 0x00000001 which is t= oo low to allow normal I2C operation. I think setting SDA_HOLD to 28 is a good candidate to be committed just now with the aim to be MFC-ed before 12.1 branch is forked. --=20 You are receiving this mail because: You are the assignee for the bug.=
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