google/fizz: Enable cr50 over SPI
By default disabled. Will need to add
FIZZ_USE_SPI_TPM config to enable.
BUG=b:62456589, b:35775024
BRANCH=None
TEST=Reboot and ensure that TPM works in verstage
CQ-DEPEND=CL:530184
Change-Id: I14ce73a1c3745c996b79c4d4758ca744e63a46b4
Signed-off-by: Shelley Chen <shchen@chromium.org>
Reviewed-on: https://review.coreboot.org/20134
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/mainboard/google/fizz/devicetree.cb b/src/mainboard/google/fizz/devicetree.cb
index abd5452..f1d2b77 100644
--- a/src/mainboard/google/fizz/devicetree.cb
+++ b/src/mainboard/google/fizz/devicetree.cb
@@ -181,6 +181,13 @@
register "i2c_voltage[2]" = "I2C_VOLTAGE_3V3" # Debug
register "i2c_voltage[5]" = "I2C_VOLTAGE_1V8" # Audio
+ # Use GSPI0 for cr50 TPM. Early init is required to set up a BAR for TPM
+ # communication before memory is up.
+ register "gspi[0]" = "{
+ .speed_mhz = 1,
+ .early_init = 1,
+ }"
+
# Configure I2C1 for cr50 TPM. Early init is required to set up a BAR
# for TPM communication before memory is up.
register "i2c[1]" = "{
@@ -259,7 +266,14 @@
device pci 1d.3 off end # PCI Express Port 12
device pci 1e.0 on end # UART #0
device pci 1e.1 off end # UART #1
- device pci 1e.2 on end # GSPI #0
+ device pci 1e.2 on
+ chip drivers/spi/acpi
+ register "hid" = "ACPI_DT_NAMESPACE_HID"
+ register "compat_string" = ""google,cr50""
+ register "irq" = "ACPI_IRQ_EDGE_LOW(GPP_E0_IRQ)"
+ device spi 0 on end
+ end
+ end # GSPI #0
device pci 1e.3 off end # GSPI #1
device pci 1e.4 off end # eMMC
device pci 1e.5 off end # SDIO