From b033ef3b4b2384df4165ae7829155cafd4ee3488 Mon Sep 17 00:00:00 2001 From: Sven Anderson Date: Mon, 13 Jan 2025 19:55:15 +0100 Subject: [PATCH 23/26] xhci: workaround z790 non-root-hub speed detection --- grub-core/bus/usb/xhci.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/grub-core/bus/usb/xhci.c b/grub-core/bus/usb/xhci.c index dc89b9619..d13a7c39d 100644 --- a/grub-core/bus/usb/xhci.c +++ b/grub-core/bus/usb/xhci.c @@ -2285,6 +2285,11 @@ grub_xhci_detect_dev (grub_usb_controller_t dev, int port, int *changed) if (!(portsc & GRUB_XHCI_PORTSC_CCS)) return GRUB_USB_SPEED_NONE; + if (port == 4 || port == 12 && speed < XHCI_USB_HIGHSPEED) { // inital hub speed detection on Z790 is too low + grub_dprintf("xhci", "%s: setting internal hub speed to high\n", __func__); + return GRUB_USB_SPEED_HIGH; + } + for (grub_uint8_t i = 0; i < 16 && x->psids[port].psids[i].id > 0; i++) { if (x->psids[port].psids[i].id == speed) -- 2.39.5