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| author | Eran Mitrani <mitrani@google.com> | 2023-10-17 13:41:50 -0700 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2023-11-07 20:15:31 +0000 |
| commit | 36991b22170be625b4946eb23669be39a623cf57 (patch) | |
| tree | 93e3f7561c63c3f10b0a79d7a7f6b638951bff89 /src/mainboard/google/rex | |
| parent | c2c8519ae9b734eb1ea6cdf30c5cb0fd78ceee77 (diff) | |
mb/google/rex/variants/deku: Add I2C config
Add I2C config based on Deku schematics.
TPM is connected to I2C 4
BUG=b:305793886
TEST=util/abuild/abuild -p none -t google/rex -x -a -b deku
Change-Id: I496e236531b2b59b320c77c36f542f4fa80a51a1
Signed-off-by: Eran Mitrani <mitrani@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78449
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/mainboard/google/rex')
| -rw-r--r-- | src/mainboard/google/rex/variants/deku/overridetree.cb | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/mainboard/google/rex/variants/deku/overridetree.cb b/src/mainboard/google/rex/variants/deku/overridetree.cb index b68840fad0..293e6d67a8 100644 --- a/src/mainboard/google/rex/variants/deku/overridetree.cb +++ b/src/mainboard/google/rex/variants/deku/overridetree.cb @@ -1,4 +1,40 @@ chip soc/intel/meteorlake + + register "serial_io_i2c_mode" = "{ + [PchSerialIoIndexI2C0] = PchSerialIoDisabled, + [PchSerialIoIndexI2C1] = PchSerialIoDisabled, + [PchSerialIoIndexI2C2] = PchSerialIoDisabled, + [PchSerialIoIndexI2C3] = PchSerialIoDisabled, + [PchSerialIoIndexI2C4] = PchSerialIoPci, + [PchSerialIoIndexI2C5] = PchSerialIoDisabled, + }" + + # Intel Common SoC Config + #+-------------------+---------------------------+ + #| Field | Value | + #+-------------------+---------------------------+ + #| I2C4 | cr50 TPM. Early init is | + #| | required to set up a BAR | + #| | for TPM communication | + #+-------------------+---------------------------+ + register "common_soc_config" = "{ + .i2c[4] = { + .early_init = 1, + .speed = I2C_SPEED_FAST, + .rise_time_ns = 600, + .fall_time_ns = 400, + .data_hold_time_ns = 50, + }, + }" + device domain 0 on + device ref i2c4 on + chip drivers/i2c/tpm + register "hid" = ""GOOG0005"" + register "irq" = "ACPI_IRQ_EDGE_LOW(GPP_E03_IRQ)" + device i2c 50 on end + end + end end + end |