mb/google/guybrush: Add initial I2C configuration
Add I2C peripheral reset configuration required during early init.
Enabled I2C generic and HID drivers. I2C GPIOs are configured as
required in CB:50091.
BUG=b:180531661
TEST=Build guybrush mainboard.
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Change-Id: I67690fbd25639879a730260aaca4cddb5e47bbc7
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51543
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>
diff --git a/src/mainboard/google/guybrush/Kconfig b/src/mainboard/google/guybrush/Kconfig
index c9f8fe0..77e4a19 100644
--- a/src/mainboard/google/guybrush/Kconfig
+++ b/src/mainboard/google/guybrush/Kconfig
@@ -9,6 +9,8 @@
def_bool y
select AMD_SOC_CONSOLE_UART
select BOARD_ROMSIZE_KB_16384
+ select DRIVERS_I2C_GENERIC
+ select DRIVERS_I2C_HID
select EC_GOOGLE_CHROMEEC
select EC_GOOGLE_CHROMEEC_BOARDID
select EC_GOOGLE_CHROMEEC_ESPI
diff --git a/src/mainboard/google/guybrush/variants/baseboard/devicetree.cb b/src/mainboard/google/guybrush/variants/baseboard/devicetree.cb
index fa15509f..3205d21 100644
--- a/src/mainboard/google/guybrush/variants/baseboard/devicetree.cb
+++ b/src/mainboard/google/guybrush/variants/baseboard/devicetree.cb
@@ -38,6 +38,9 @@
.vw_irq_polarity = ESPI_VW_IRQ_LEVEL_HIGH(1) | ESPI_VW_IRQ_LEVEL_HIGH(12),
}"
+ register "i2c_scl_reset" = "GPIO_I2C0_SCL | GPIO_I2C1_SCL |
+ GPIO_I2C2_SCL | GPIO_I2C3_SCL"
+
device domain 0 on
device ref gpp_bridge_0 on end # WLAN
device ref gpp_bridge_1 on end # SD
diff --git a/src/mainboard/google/guybrush/variants/guybrush/overridetree.cb b/src/mainboard/google/guybrush/variants/guybrush/overridetree.cb
index 80c04ee..286ba28 100644
--- a/src/mainboard/google/guybrush/variants/guybrush/overridetree.cb
+++ b/src/mainboard/google/guybrush/variants/guybrush/overridetree.cb
@@ -34,4 +34,31 @@
chip soc/amd/cezanne
device domain 0 on
end # domain
+
+ # I2C Config
+ #+-------------------+---------------------------+
+ #| Field | Value |
+ #+-------------------+---------------------------+
+ #| I2C0 | Trackpad |
+ #| I2C1 | Touchscreen |
+ #| I2C2 | Speaker, Codec, P-SAR |
+ #| I2C3 | H1/D2 TPM |
+ #+-------------------+---------------------------+
+ register "i2c[0]" = "{
+ .speed = I2C_SPEED_FAST,
+ }"
+
+ register "i2c[1]" = "{
+ .speed = I2C_SPEED_FAST,
+ }"
+
+ register "i2c[2]" = "{
+ .speed = I2C_SPEED_FAST,
+ }"
+
+ register "i2c[3]" = "{
+ .speed = I2C_SPEED_FAST,
+ .early_init = true,
+ }"
+
end # chip soc/amd/cezanne