mb/google/octopus: adjust Bobba I2C CLK under 400KHz
Need to tune I2C bus 0/6/7 clock frequency under the 400KHz for digitizer, touchpad, and touchscreen. Bug=b:117126484 TEST=flash coreboot to the DUT and measure I2C bus 0/6/7 clock frequency whether can <400KHz Change-Id: Icb9592c688b864a21efd4963a4463845dfaa06fb Signed-off-by: Pan Sheng-Liang <sheng-liang.pan@quanta.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/28907 Reviewed-by: Justin TerAvest <teravest@chromium.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
parent
f97ff0cd50
commit
4f6eccdcac
|
@ -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 |
|
||||
#| I2C0 | Digitizer |
|
||||
#| 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 = 88,
|
||||
.fall_time_ns = 16,
|
||||
},
|
||||
.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 = 44,
|
||||
.fall_time_ns = 90,
|
||||
},
|
||||
}"
|
||||
|
||||
device domain 0 on
|
||||
device pci 16.0 on
|
||||
chip drivers/i2c/hid
|
||||
|
|
Loading…
Reference in New Issue