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x86: ivybridge: Set up XHCI USB 

Add init for XHCI so that high-speed USB can be used.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2014-11-14 18:18:42 -07:00
parent 79b303467a
commit a6d4c45306
3 changed files with 34 additions and 0 deletions
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1
arch/x86/cpu/ivybridge/Makefile
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@ -18,3 +18,4 @@ obj-y += report_platform.o
obj-y += sata.o
obj-y += sdram.o
obj-y += usb_ehci.o
obj-y += usb_xhci.o

32
arch/x86/cpu/ivybridge/usb_xhci.c Normal file
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@ -0,0 +1,32 @@
/*
* From Coreboot
* Copyright (C) 2008-2009 coresystems GmbH
*
* SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <asm/pci.h>
#include <asm/arch/pch.h>
void bd82x6x_usb_xhci_init(pci_dev_t dev)
{
u32 reg32;
debug("XHCI: Setting up controller.. ");
/* lock overcurrent map */
reg32 = pci_read_config32(dev, 0x44);
reg32 |= 1;
pci_write_config32(dev, 0x44, reg32);
/* Enable clock gating */
reg32 = pci_read_config32(dev, 0x40);
reg32 &= ~((1 << 20) | (1 << 21));
reg32 |= (1 << 19) | (1 << 18) | (1 << 17);
reg32 |= (1 << 10) | (1 << 9) | (1 << 8);
reg32 |= (1 << 31); /* lock */
pci_write_config32(dev, 0x40, reg32);
debug("done.\n");
}

1
arch/x86/include/asm/arch-ivybridge/bd82x6x.h
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@ -11,6 +11,7 @@ void bd82x6x_sata_init(pci_dev_t dev, const void *blob, int node);
void bd82x6x_sata_enable(pci_dev_t dev, const void *blob, int node);
void bd82x6x_pci_init(pci_dev_t dev);
void bd82x6x_usb_ehci_init(pci_dev_t dev);
void bd82x6x_usb_xhci_init(pci_dev_t dev);
int bd82x6x_init_pci_devices(void);
int bd82x6x_init(void);