diff options
| author | Chris Zhou <chris_zhou@compal.corp-partner.google.com> | 2018-09-27 15:28:33 +0800 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2018-10-01 15:52:10 +0000 |
| commit | c733540bc9c6c6c2819e6058290e10b08be1f0ca (patch) | |
| tree | 801bc9386af2bf623716d566d9d9c271e5d96567 /src/mainboard/google/octopus/variants | |
| parent | 2930a7279703080b10391d9f145bb91c9a72e13a (diff) | |
mb/google/octopus: Operate touchpad I2C CLK in spec
Need to tune I2C bus 6 clock frequency under the 400K Hz
Bug=b:115600671
TEST=flash coreboot to the DUT and measure I2C bus 6 clock
frequency whether arrive to 398.07K Hz
Change-Id: I5cc1f67f0db0553cb8424f81408ed4686cddb2fb
Signed-off-by: Chris Zhou <chris_zhou@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/28760
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Justin TerAvest <teravest@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Diffstat (limited to 'src/mainboard/google/octopus/variants')
| -rw-r--r-- | src/mainboard/google/octopus/variants/fleex/overridetree.cb | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/mainboard/google/octopus/variants/fleex/overridetree.cb b/src/mainboard/google/octopus/variants/fleex/overridetree.cb index 179b8f4a4f..792e0570fa 100644 --- a/src/mainboard/google/octopus/variants/fleex/overridetree.cb +++ b/src/mainboard/google/octopus/variants/fleex/overridetree.cb @@ -1,5 +1,46 @@ chip soc/intel/apollolake + # Intel Common SoC Config + #+-------------------+---------------------------+ + #| Field | Value | + #+-------------------+---------------------------+ + #| GSPI0 | cr50 TPM. Early init is | + #| | required to set up a BAR | + #| | for TPM communication | + #| | before memory is up | + #| I2C5 | Audio | + #| I2C6 | Trackpad | + #| I2C7 | Touchscreen | + #+-------------------+---------------------------+ + + register "common_soc_config" = "{ + .gspi[0] = { + .speed_mhz = 1, + .early_init = 1, + }, + .i2c[0] = { + .speed = I2C_SPEED_FAST, + .rise_time_ns = 152, + .fall_time_ns = 30, + }, + .i2c[5] = { + .speed = I2C_SPEED_FAST, + .rise_time_ns = 104, + .fall_time_ns = 52, + }, + .i2c[6] = { + .speed = I2C_SPEED_FAST, + .rise_time_ns = 66, + .fall_time_ns = 90, + .data_hold_time_ns = 350, + }, + .i2c[7] = { + .speed = I2C_SPEED_FAST, + .rise_time_ns = 76, + .fall_time_ns = 164, + }, + }" + device domain 0 on device pci 16.1 off end # - I2C 1 device pci 17.1 on |