diff options
| author | Jagadish Krishnamoorthy <jagadish.krishnamoorthy@intel.com> | 2016-05-19 19:32:13 -0700 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2016-05-24 20:30:31 +0200 |
| commit | c123ccfa127b58a20ad3efa800c0e73f307f0ac5 (patch) | |
| tree | fabe01dd9dee1d04853ee511a4aafa39c88f7d70 /src/mainboard/intel/amenia/acpi | |
| parent | e2e561d31fcb1a9227a06ed1fb821090815050c7 (diff) | |
intel/amenia: Configure Trackpad IC_SDA_HOLD time
Elan trackpad needs greater sda hold time.
Configure IC_SDA_HOLD register to increase
the i2c sda hold time by 0.3us.
Change-Id: I3d966eed62a059ecb6a0a88e9f4e6b4ba7a925e4
Signed-off-by: Jagadish Krishnamoorthy <jagadish.krishnamoorthy@intel.com>
Reviewed-on: https://review.coreboot.org/14922
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/mainboard/intel/amenia/acpi')
| -rw-r--r-- | src/mainboard/intel/amenia/acpi/mainboard.asl | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/mainboard/intel/amenia/acpi/mainboard.asl b/src/mainboard/intel/amenia/acpi/mainboard.asl index 35043b0e73..09ef9b4e34 100644 --- a/src/mainboard/intel/amenia/acpi/mainboard.asl +++ b/src/mainboard/intel/amenia/acpi/mainboard.asl @@ -18,6 +18,18 @@ Scope (\_SB.PCI0.I2C4) { + /* Standard Mode: HCNT, LCNT, SDA Hold Register */ + /* SDA Hold register value of 40 indicates + * sda hold time of 0.3us for ic_clk of 133MHz + */ + Name (SSCN, Package () { 0, 0, 40 }) + + /* Fast Mode: HCNT, LCNT, SDA Hold Register */ + /* SDA Hold register value of 40 indicates + * sda hold time of 0.3us for ic_clk of 133MHz + */ + Name (FMCN, Package () { 0, 0, 40 }) + Device (ETPA) { Name (_HID, "ELAN0000") |