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 72729d4ef37364e8e5b1b96e9343834b0ad81f8b 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 and Linux
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..e4d8659 100644 --- a/src/southbridge/intel/lynxpoint/acpi/serialio.asl +++ b/src/southbridge/intel/lynxpoint/acpi/serialio.asl @@ -127,6 +127,9 @@ Device (SDMA) Name (_UID, 1) Name (_ADR, 0x00150000)
+ 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 () { @@ -165,6 +168,9 @@ 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 () {