Add init for XHCI so that high-speed USB can be used.
Signed-off-by: Simon Glass sjg@chromium.org ---
arch/x86/cpu/ivybridge/Makefile | 1 + arch/x86/cpu/ivybridge/usb_xhci.c | 32 +++++++++++++++++++++++++++ arch/x86/include/asm/arch-ivybridge/bd82x6x.h | 1 + 3 files changed, 34 insertions(+) create mode 100644 arch/x86/cpu/ivybridge/usb_xhci.c
diff --git a/arch/x86/cpu/ivybridge/Makefile b/arch/x86/cpu/ivybridge/Makefile index 4a00757..aedc395 100644 --- a/arch/x86/cpu/ivybridge/Makefile +++ b/arch/x86/cpu/ivybridge/Makefile @@ -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 diff --git a/arch/x86/cpu/ivybridge/usb_xhci.c b/arch/x86/cpu/ivybridge/usb_xhci.c new file mode 100644 index 0000000..4a32a7e --- /dev/null +++ b/arch/x86/cpu/ivybridge/usb_xhci.c @@ -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"); +} diff --git a/arch/x86/include/asm/arch-ivybridge/bd82x6x.h b/arch/x86/include/asm/arch-ivybridge/bd82x6x.h index 2e6a079..6454dd9 100644 --- a/arch/x86/include/asm/arch-ivybridge/bd82x6x.h +++ b/arch/x86/include/asm/arch-ivybridge/bd82x6x.h @@ -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);