** Description changed: 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. PS/2 mode doesn't affected. - + 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. + touchpad works good on i2c mode. Tested: - The patch is tested on many Dell ApolloLake laptops and works good. + The patch is tested on many Dell ApolloLake laptops and works good.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1635177 Title: mfd: intel-lpss: Add default I2C device properties for Apollo Lake Status in linux package in Ubuntu: Triaged 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1635177/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
