diff options
Diffstat (limited to 'src/mainboard/intel/galileo/gpio.c')
| -rw-r--r-- | src/mainboard/intel/galileo/gpio.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/mainboard/intel/galileo/gpio.c b/src/mainboard/intel/galileo/gpio.c index a411c5a0ff..31843814c2 100644 --- a/src/mainboard/intel/galileo/gpio.c +++ b/src/mainboard/intel/galileo/gpio.c @@ -50,3 +50,20 @@ void mainboard_gpio_init(void) script = gen1_gpio_init; reg_script_run(script); } + +void mainboard_gpio_pcie_reset(uint32_t pin_value) +{ + uint32_t pin_number; + uint32_t value; + + /* Determine the correct PCIe reset pin */ + if (IS_ENABLED(CONFIG_GALILEO_GEN2)) + pin_number = GEN2_PCI_RESET_RESUMEWELL_GPIO; + else + pin_number = GEN1_PCI_RESET_RESUMEWELL_GPIO; + + /* Update the PCIe reset value */ + value = reg_legacy_gpio_read(R_QNC_GPIO_RGLVL_RESUME_WELL); + value = (value & ~(1 << pin_number)) | ((pin_value & 1) << pin_number); + reg_legacy_gpio_write(R_QNC_GPIO_RGLVL_RESUME_WELL, value); +} |