diff options
| author | Patrick Rudolph <patrick.rudolph@9elements.com> | 2023-10-29 19:51:17 +0100 |
|---|---|---|
| committer | Lean Sheng Tan <sheng.tan@9elements.com> | 2024-01-15 09:33:51 +0000 |
| commit | c943d6f6a4c6b632084984b9aeeb7e5cc6dc357e (patch) | |
| tree | 3ffbd26f7326393e0d5a3e63501726cc83968690 /src | |
| parent | 42ea8b2c674ddd9e859a001eac208b8a5da2c0fa (diff) | |
sb/intel/bd82x6x/early_usb: Print error for invalid USB setting
According to BWG the USB current setting 0 should not be used for
desktop boards. As autoport defaults to 0 if the USB current doesn't
match one of the lookup table entries most of the desktop boards in
tree have such a setting. Print an error to alert users of such boards
to update the USB current settings.
Tested: Lenovo X220 still boots.
Change-Id: If76e9126b4aba8e16c1c91dece725aac12e1a7e9
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78827
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/southbridge/intel/bd82x6x/early_usb.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/src/southbridge/intel/bd82x6x/early_usb.c b/src/southbridge/intel/bd82x6x/early_usb.c index 654d44b7dc..974c190381 100644 --- a/src/southbridge/intel/bd82x6x/early_usb.c +++ b/src/southbridge/intel/bd82x6x/early_usb.c @@ -1,5 +1,6 @@ /* SPDX-License-Identifier: GPL-2.0-only */ +#include <console/console.h> #include <device/mmio.h> #include <device/pci_ops.h> #include <device/pci_def.h> @@ -23,8 +24,22 @@ void early_usb_init(const struct southbridge_usb_port *portmap) /* Unlock registers. */ write_pmbase16(UPRWC, read_pmbase16(UPRWC) | UPRWC_WR_EN); - for (i = 0; i < 14; i++) - RCBA32(USBIR0 + 4 * i) = currents[portmap[i].current]; + for (i = 0; i < 14; i++) { + if (portmap[i].enabled && !pch_is_mobile() && portmap[i].current == 0) { + /* + * Note for developers: You can fix this by re-running autoport on + * vendor firmware and then updating portmap currents accordingly. + * If that is not possible, another option is to choose a non-zero + * current setting. In either case, please test all the USB ports. + */ + printk(BIOS_ERR, "%s: USB%02d: current setting of 0 is an invalid setting for desktop!\n", + __func__, i); + + RCBA32(USBIR0 + 4 * i) = currents[1]; + } else { + RCBA32(USBIR0 + 4 * i) = currents[portmap[i].current]; + } + } for (i = 0; i < 10; i++) RCBA32(0x3538 + 4 * i) = 0; |