[coreboot-gerrit] Change in coreboot[master]: mb/google/poppy/variants/nautilus: set I2C speed to 400KHz
Chris Wang (Code Review)
gerrit at coreboot.org
Fri Nov 24 07:03:30 CET 2017
Hello Chris Wang,
I'd like you to do a code review. Please visit
https://review.coreboot.org/22589
to review the following change.
Change subject: mb/google/poppy/variants/nautilus: set I2C speed to 400KHz
......................................................................
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 at ami.corp-partner.google.com>
---
M src/mainboard/google/poppy/variants/nautilus/devicetree.cb
1 file changed, 53 insertions(+), 8 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/89/22589/1
diff --git a/src/mainboard/google/poppy/variants/nautilus/devicetree.cb b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
index 6ee7a52..83feda5 100644
--- a/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
+++ b/src/mainboard/google/poppy/variants/nautilus/devicetree.cb
@@ -78,6 +78,7 @@
register "SlowSlewRateForIa" = "3" # Fast/16
register "SlowSlewRateForGt" = "3" # Fast/16
register "SlowSlewRateForSa" = "3" # Fast/16
+
# VR Settings Configuration for 4 Domains
#+----------------+-------+-------+-------+-------+
#| Domain/Setting | SA | IA | GTUS | GTS |
@@ -175,6 +176,15 @@
# Touchscreen
register "i2c_voltage[0]" = "I2C_VOLTAGE_3V3"
+ register "i2c[0]" = "{
+ .speed = I2C_SPEED_FAST,
+ .speed_config[0] = {
+ .speed = I2C_SPEED_FAST,
+ .scl_lcnt = 190,
+ .scl_hcnt = 100,
+ .sda_hold = 36,
+ },
+ }"
# H1
register "i2c_voltage[1]" = "I2C_VOLTAGE_3V3"
@@ -182,20 +192,62 @@
# 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 = 190,
+ .scl_hcnt = 100,
+ .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 = 190,
+ .scl_hcnt = 100,
+ .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" = "{
@@ -210,13 +262,6 @@
[PchSerialIoIndexUart0] = PchSerialIoPci,
[PchSerialIoIndexUart1] = PchSerialIoDisabled,
[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"
--
To view, visit https://review.coreboot.org/22589
To unsubscribe, visit https://review.coreboot.org/settings
Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Icb48733b87cefc92577547b1eab661a8cbb12be6
Gerrit-Change-Number: 22589
Gerrit-PatchSet: 1
Gerrit-Owner: Chris Wang <chriswang at ami.com.tw>
Gerrit-Reviewer: Chris Wang <chriswang at ami.corp-partner.google.com>
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