diff options
Diffstat (limited to 'src/mainboard/google/volteer/variants/volteer2/variant.c')
-rw-r--r-- | src/mainboard/google/volteer/variants/volteer2/variant.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/mainboard/google/volteer/variants/volteer2/variant.c b/src/mainboard/google/volteer/variants/volteer2/variant.c new file mode 100644 index 0000000000..057bb8ad65 --- /dev/null +++ b/src/mainboard/google/volteer/variants/volteer2/variant.c @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <baseboard/variants.h> +#include <soc/pci_devs.h> +#include <acpi/acpi_device.h> + +extern struct chip_operations drivers_i2c_tpm_ops; + +static bool match_i2c_tpm(DEVTREE_CONST struct device *dev) +{ + return dev->chip_ops == &drivers_i2c_tpm_ops; +} + +/* + * This function runs only on the volteer_ti50 variant, which has the GSC on a + * reworked I2C bus. + */ +static void devtree_enable_i2c_tpm(void) +{ + struct device *spi_tpm = pcidev_path_on_root(PCH_DEVFN_GSPI0)->link_list->children; + struct device *i2c_tpm = dev_find_matching_device_on_bus( + pcidev_path_on_root(PCH_DEVFN_I2C1)->link_list, match_i2c_tpm); + if (!i2c_tpm || !spi_tpm) + return; + spi_tpm->enabled = 0; + i2c_tpm->enabled = 1; +} + +void variant_devtree_update(void) +{ + if (CONFIG(MAINBOARD_HAS_I2C_TPM_CR50)) + devtree_enable_i2c_tpm(); +} |