** Changed in: linux (Ubuntu Yakkety)
Status: In Progress => Fix Committed
** Changed in: linux (Ubuntu Xenial)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1635177
Title:
mfd: intel-lpss: Add default I2C device properties for Apollo Lake
Status in HWE Next:
New
Status in linux package in Ubuntu:
Triaged
Status in linux source package in Xenial:
Fix Committed
Status in linux source package in Yakkety:
Fix Committed
Bug description:
We need this patch for all Apollo Lake platforms for enabling the touchpad.
This patch was cherry-picked from c50cdd62dda3f885c1e6ca8b3d5a0851c911ec54.
And later backported to 4.4 kernel.
It is because for Apollo Lake, the default freq/falling-time is incorrect. So
it makes the i2c acts weird.
Please consider SRU this commit.
Impact:
All touchpad on Apollo Lake work unstable on i2c mode. Sometimes it will
fallback to PS/2 mode and lost some functionality.
Fix:
touchpad works good on i2c mode.
Tested:
The patch is tested on many Dell ApolloLake laptops and works good.
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