diff options
| author | Chris Wang <chriswang@ami.corp-partner.google.com> | 2017-11-24 14:00:48 +0800 |
|---|---|---|
| committer | Furquan Shaikh <furquan@google.com> | 2017-11-28 19:11:04 +0000 |
| commit | 5220e5fba6606224976e8a540c7a07d447d8b3d8 (patch) | |
| tree | 167f29f6409056b3ec1b15bd061c51023fc3de43 /src/mainboard/google/poppy/variants | |
| parent | 51de1802f34c73710df9115557c5c13524e8608c (diff) | |
mb/google/poppy/variants/nautilus: set I2C speed to 400KHz
Add "speed_config" for each I2C port configuration to set speed to
400KHz.
BRANCH=master
BUG=none
TEST=compiled/verified
Change-Id: Icb48733b87cefc92577547b1eab661a8cbb12be6
Signed-off-by: Chris Wang <chriswang@ami.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/22589
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/google/poppy/variants')
| -rw-r--r-- | src/mainboard/google/poppy/variants/nautilus/devicetree.cb | 60 |
1 files changed, 52 insertions, 8 deletions
diff --git a/src/mainboard/google/poppy/variants/nautilus/devicetree.cb b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb index 6ee7a52f80..b1e6c11b57 100644 --- a/src/mainboard/google/poppy/variants/nautilus/devicetree.cb +++ b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb @@ -175,6 +175,15 @@ chip soc/intel/skylake # Touchscreen register "i2c_voltage[0]" = "I2C_VOLTAGE_3V3" + register "i2c[0]" = "{ + .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 180, + .scl_hcnt = 90, + .sda_hold = 36, + }, + }" # H1 register "i2c_voltage[1]" = "I2C_VOLTAGE_3V3" @@ -182,20 +191,62 @@ chip soc/intel/skylake # for TPM communication before memory is up. register "i2c[1]" = "{ .early_init = 1, + .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 185, + .scl_hcnt = 90, + .sda_hold = 36, + }, }" # Trackpad register "i2c_voltage[2]" = "I2C_VOLTAGE_1V8" + register "i2c[2]" = "{ + .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 190, + .scl_hcnt = 100, + .sda_hold = 36, + }, + }" # Pen register "i2c_voltage[3]" = "I2C_VOLTAGE_1V8" + register "i2c[3]" = "{ + .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 185, + .scl_hcnt = 90, + .sda_hold = 36, + }, + }" # Camera register "i2c_voltage[4]" = "I2C_VOLTAGE_1V8" + register "i2c[4]" = "{ + .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 190, + .scl_hcnt = 100, + .sda_hold = 36, + }, + }" # Audio register "i2c_voltage[5]" = "I2C_VOLTAGE_1V8" - + register "i2c[5]" = "{ + .speed = I2C_SPEED_FAST, + .speed_config[0] = { + .speed = I2C_SPEED_FAST, + .scl_lcnt = 190, + .scl_hcnt = 100, + .sda_hold = 36, + }, + }" # Must leave UART0 enabled or SD/eMMC will not work as PCI register "SerialIoDevMode" = "{ @@ -212,13 +263,6 @@ chip soc/intel/skylake [PchSerialIoIndexUart2] = PchSerialIoSkipInit, }" - # Enable I2C5 for audio codec at 400kHz - register "i2c[5]" = "{ - .speed = I2C_SPEED_FAST, - .rise_time_ns = 104, - .fall_time_ns = 52, - }" - register "speed_shift_enable" = "1" # PL2 override 15W for KBL-Y register "tdp_pl2_override" = "15" |