From f62b0c332b81b394d6658536ddeddc18f5ef35f1 Mon Sep 17 00:00:00 2001 From: Fabian Groffen Date: Thu, 11 May 2023 15:32:58 +0200 Subject: mb/asus/p8z77-m: Enable Port 80 UART Copied this bit from asus/p8z77-m_pro, without it a GRUB2 payload will get stuck in an endless loop showing Unknown key 0xff detected whenever there is an USB device (such as a keyboard) connected. In this mode GRUB2 is so busy showing this message repeatedly that no other keypress ever gets handled, and thus no other remedy is possible than a reset via mb pins and unplugging the USB device. Signed-off-by: Fabian Groffen Change-Id: Iebd433e2762a69241257e1b4f859319536a8d8f5 Reviewed-on: https://review.coreboot.org/c/coreboot/+/75138 Reviewed-by: Keith Hui Tested-by: build bot (Jenkins) --- src/mainboard/asus/p8x7x-series/variants/p8z77-m/overridetree.cb | 1 + 1 file changed, 1 insertion(+) (limited to 'src/mainboard/asus') diff --git a/src/mainboard/asus/p8x7x-series/variants/p8z77-m/overridetree.cb b/src/mainboard/asus/p8x7x-series/variants/p8z77-m/overridetree.cb index ee2fe9a5f4..ce1eb9ee07 100644 --- a/src/mainboard/asus/p8x7x-series/variants/p8z77-m/overridetree.cb +++ b/src/mainboard/asus/p8x7x-series/variants/p8z77-m/overridetree.cb @@ -80,6 +80,7 @@ chip northbridge/intel/sandybridge end device pnp 2e.609 off end # GPIO 6 device pnp 2e.709 off end # GPIO 7 + device pnp 2e.14 on end # Port 80 UART end chip drivers/pc80/tpm device pnp 4e.0 on end # TPM -- cgit v1.2.3