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mb/siemens/mc_ehl2: Move RTC RX6110SA from SMBus to I2C2 

This board has the RTC RX6110SA connected to the I2C2 instead of SMBus
as in mc_ehl1. Set the bus speed for I2C2 to 100 kHz, since this RTC
only supports the standard speed.

TEST:
- Console Log shows no errors for RX6110SA during I2C2 init
- Finalize device for I2C 00:32 shows correct date and time

Change-Id: I679c6397fa0d213a25eebaf8a9e0bda9941acd26
Signed-off-by: Mario Scheithauer <mario.scheithauer@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58112
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>
This commit is contained in:
Mario Scheithauer 2021-08-24 11:34:51 +02:00 committed by Felix Held
parent 670462c7c6
commit d3e6574b66
1 changed files with 23 additions and 17 deletions
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40
src/mainboard/siemens/mc_ehl/variants/mc_ehl2/devicetree.cb
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@ -135,6 +135,12 @@ chip soc/intel/elkhartlake
register "PchTsnGbeLinkSpeed" = "Tsn_2_5_Gbps"
register "PchTsnGbeSgmiiEnable" = "1"
register "common_soc_config" = "{
.i2c[2] = {
.speed = I2C_SPEED_STANDARD,
},
}"
device domain 0 on
device pci 00.0 on end # Host Bridge
device pci 02.0 on end # Integrated Graphics Device
@ -173,7 +179,22 @@ chip soc/intel/elkhartlake
device pci 15.0 off end # I2C0
device pci 15.1 on end # I2C1
device pci 15.2 off end # I2C2
device pci 15.2 on # I2C2
# Enable external RTC chip
chip drivers/i2c/rx6110sa
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
end
end
device pci 15.3 off end # I2C3
device pci 16.0 on end # Management Engine Interface 1
@ -240,22 +261,7 @@ chip soc/intel/elkhartlake
device pci 1f.1 on end # P2SB
device pci 1f.2 hidden end # Power Management Controller
device pci 1f.3 off end # Intel cAVS/HDA
device pci 1f.4 on # SMBus
# Enable external RTC chip
chip drivers/i2c/rx6110sa
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
end
end
device pci 1f.4 on end # SMBus
device pci 1f.5 on end # PCH SPI (flash & TPM)
device pci 1f.7 off end # PCH Intel Trace Hub
end