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mb/siemens/mc_ehl8: Configure I2C and SMB devices

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On this board, different I2C controllers must be activated and a
different RTC chip is used compared to mc_ehl1.

TEST=Booted into OS and verified that all relevant devices are detected.

Change-Id: If2990b7d8d599c6e5f5841d8018d2a3f00dbc515
Signed-off-by: Uwe Poeche <uwe.poeche@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/90766
Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Uwe Poeche 2025-10-09 13:13:34 +02:00 • committed by Matt DeVillier
commit 483c3e51ae
2 changed files with 13 additions and 12 deletions
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2
src/mainboard/siemens/mc_ehl/variants/mc_ehl8/Kconfig
View file

@ -4,7 +4,7 @@ if BOARD_SIEMENS_MC_EHL8
config BOARD_SPECIFIC_OPTIONS
def_bool y
select DRIVERS_I2C_RX6110SA
select DRIVERS_I2C_RV3028C7
select DRIVERS_I2C_PI608GP
select DRIVER_INTEL_I210
select INTEL_LPSS_UART_FOR_CONSOLE

23
src/mainboard/siemens/mc_ehl/variants/mc_ehl8/devicetree.cb
View file

@ -95,18 +95,19 @@ chip soc/intel/elkhartlake
# LPSS Serial IO (I2C/UART/GSPI) related UPDs
register "SerialIoI2cMode" = "{
[PchSerialIoIndexI2C0] = PchSerialIoDisabled,
[PchSerialIoIndexI2C1] = PchSerialIoPci,
[PchSerialIoIndexI2C2] = PchSerialIoDisabled,
[PchSerialIoIndexI2C1] = PchSerialIoDisabled,
[PchSerialIoIndexI2C2] = PchSerialIoPci,
[PchSerialIoIndexI2C3] = PchSerialIoDisabled,
[PchSerialIoIndexI2C4] = PchSerialIoPci,
[PchSerialIoIndexI2C5] = PchSerialIoDisabled,
[PchSerialIoIndexI2C6] = PchSerialIoDisabled,
[PchSerialIoIndexI2C6] = PchSerialIoPci,
[PchSerialIoIndexI2C7] = PchSerialIoDisabled,
}"
register "SerialIoI2cPadsTermination" = "{
[PchSerialIoIndexI2C1] = 1,
[PchSerialIoIndexI2C2] = 1,
[PchSerialIoIndexI2C4] = 1,
[PchSerialIoIndexI2C6] = 1,
}"
register "SerialIoUartMode" = "{
@ -141,10 +142,12 @@ chip soc/intel/elkhartlake
device pci 00.0 on end # Host Bridge
device pci 02.0 on end # Integrated Graphics Device
device pci 10.0 on end # I2C6
device pci 14.0 on end # USB3.1 xHCI
device pci 15.0 off end # I2C0
device pci 15.1 on end # I2C1
device pci 15.2 on end # I2C2
device pci 16.0 hidden end # Management Engine Interface 1
@ -173,18 +176,16 @@ chip soc/intel/elkhartlake
device pci 1f.2 hidden end # Power Management Controller
device pci 1f.4 on # SMBus
# Enable external RTC chip
chip drivers/i2c/rx6110sa
chip drivers/i2c/rv3028c7
register "bus_speed" = "I2C_SPEED_STANDARD"
register "pmon_sampling" = "PMON_SAMPL_256_MS"
register "bks_on" = "0"
register "bks_off" = "1"
register "iocut_en" = "1"
register "set_user_date" = "1"
register "user_year" = "04"
register "user_month" = "07"
register "user_day" = "01"
register "user_weekday" = "4"
device i2c 0x32 on end # RTC RX6110 SA
register "bckup_sw_mode" = "BACKUP_SW_LEVEL"
register "cap_charge" = "CHARGE_OFF"
device i2c 0x52 on end # RTC RV3028-C7
end
# PI7C9X2G608GP PCIe switch configuration
chip drivers/i2c/pi608gp