diff options
| -rw-r--r-- | src/mainboard/google/brya/variants/agah/variant.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/src/mainboard/google/brya/variants/agah/variant.c b/src/mainboard/google/brya/variants/agah/variant.c index 4e7f6d20f383..43aea8cf6dbb 100644 --- a/src/mainboard/google/brya/variants/agah/variant.c +++ b/src/mainboard/google/brya/variants/agah/variant.c @@ -5,7 +5,7 @@ #include <baseboard/variants.h> #include <boardid.h> #include <delay.h> -#include <device/pci_ops.h> +#include <device/pci.h> #include <gpio.h> #include <timer.h> #include <types.h> @@ -161,3 +161,19 @@ void variant_fill_ssdt(const struct device *dev) acpigen_write_method_end(); acpigen_write_scope_end(); } + +void variant_finalize(void) +{ + /* + * Currently the `pch_pirq_init()` function in lpc_lib.c will program + * PIRQ IRQs for all PCI devices discovered during enumeration. This may + * not be correct for all devices, and causes strange behavior with the + * Nvidia dGPU; it will start out with IRQ 11 and then after a + * suspend/resume cycle, it will get programmed back to 16, so the Linux + * kernel must be doing some IRQ sanitization at some point. To fix + * this anomaly, explicitly program the IRQ to 16 (which we know is what + * IRQ it will eventually take). + */ + const struct device *dgpu = DEV_PTR(dgpu); + pci_write_config8(dgpu, PCI_INTERRUPT_LINE, 16); +} |