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authorChris Wang <chriswang@ami.corp-partner.google.com>2017-11-24 14:00:48 +0800
committerFurquan Shaikh <furquan@google.com>2017-11-28 19:11:04 +0000
commit5220e5fba6606224976e8a540c7a07d447d8b3d8 (patch)
tree167f29f6409056b3ec1b15bd061c51023fc3de43 /src
parent51de1802f34c73710df9115557c5c13524e8608c (diff)
downloadcoreboot-5220e5fba6606224976e8a540c7a07d447d8b3d8.tar.xz
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')
-rw-r--r--src/mainboard/google/poppy/variants/nautilus/devicetree.cb60
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"