Matt DeVillier (matt.devillier@gmail.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/17620
-gerrit
commit fedf45a74fa34b8dda7243ebc92426e30497e1d7 Author: Prabal Saha coolstarorganization@gmail.com Date: Thu Jul 14 12:34:33 2016 -0700
sb/intel/lynxpoint: add missing I2C ACPI SSCN/FMCN methods
The SSCN and FMCN methods provide the optimal HCNT/LCNT timing values to the driver, and are necessary when using I2C devices (eg, trackpad and touchscreen) in ACPI (vs PCI) mode. Add these methods using the timing values from Broadwell, which work for Haswell/Lynxpoint as well.
TEST: build google/peppy with trackpad/touchscreen devices in ACPI mode, observe proper operation under Windows [8.1/10] and Linux [Mint 18]
Change-Id: I25f07ac474b041358315530e5f391bb33d9c4d04 Signed-off-by: Matt DeVillier matt.devillier@gmail.com --- src/southbridge/intel/lynxpoint/acpi/serialio.asl | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/src/southbridge/intel/lynxpoint/acpi/serialio.asl b/src/southbridge/intel/lynxpoint/acpi/serialio.asl index 930a8ee..e8e81c3 100644 --- a/src/southbridge/intel/lynxpoint/acpi/serialio.asl +++ b/src/southbridge/intel/lynxpoint/acpi/serialio.asl @@ -165,6 +165,9 @@ Device (I2C0) Name (_UID, 1) Name (_ADR, 0x00150001)
+ Name (SSCN, Package () { 432, 507, 30 }) + Name (FMCN, Package () { 72, 160, 30 }) + // BAR0 is assigned during PCI enumeration and saved into NVS Name (RBUF, ResourceTemplate () { @@ -244,6 +247,9 @@ Device (I2C1) Name (_UID, 1) Name (_ADR, 0x00150002)
+ Name (SSCN, Package () { 432, 507, 30 }) + Name (FMCN, Package () { 72, 160, 30 }) + // BAR0 is assigned during PCI enumeration and saved into NVS Name (RBUF, ResourceTemplate () {