mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-19 03:08:31 +00:00
ef53b8c4ce
This patch is doing the following: 1. Implementing the errata for LS2080. 2. Adding fixup for fdt for LS2080. Signed-off-by: Sriram Dash <sriram.dash@nxp.com> Signed-off-by: Rajesh Bhagat <rajesh.bhagat@nxp.com>
118 lines
2.6 KiB
C
118 lines
2.6 KiB
C
/*
|
|
* Copyright 2015 Freescale Semiconductor, Inc.
|
|
*
|
|
* FSL USB HOST xHCI Controller
|
|
*
|
|
* Author: Ramneek Mehresh<ramneek.mehresh@freescale.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <usb.h>
|
|
#include <asm-generic/errno.h>
|
|
#include <linux/compat.h>
|
|
#include <linux/usb/xhci-fsl.h>
|
|
#include <linux/usb/dwc3.h>
|
|
#include "xhci.h"
|
|
#include <fsl_errata.h>
|
|
#include <fsl_usb.h>
|
|
|
|
/* Declare global data pointer */
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
static struct fsl_xhci fsl_xhci;
|
|
unsigned long ctr_addr[] = FSL_USB_XHCI_ADDR;
|
|
|
|
__weak int __board_usb_init(int index, enum usb_init_type init)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static int erratum_a008751(void)
|
|
{
|
|
#if defined(CONFIG_TARGET_LS2080AQDS) || defined(CONFIG_TARGET_LS2080ARDB)
|
|
u32 __iomem *scfg = (u32 __iomem *)SCFG_BASE;
|
|
writel(SCFG_USB3PRM1CR_INIT, scfg + SCFG_USB3PRM1CR / 4);
|
|
return 0;
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
static void fsl_apply_xhci_errata(void)
|
|
{
|
|
int ret;
|
|
if (has_erratum_a008751()) {
|
|
ret = erratum_a008751();
|
|
if (ret != 0)
|
|
puts("Failed to apply erratum a008751\n");
|
|
}
|
|
}
|
|
|
|
static int fsl_xhci_core_init(struct fsl_xhci *fsl_xhci)
|
|
{
|
|
int ret = 0;
|
|
|
|
ret = dwc3_core_init(fsl_xhci->dwc3_reg);
|
|
if (ret) {
|
|
debug("%s:failed to initialize core\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
/* We are hard-coding DWC3 core to Host Mode */
|
|
dwc3_set_mode(fsl_xhci->dwc3_reg, DWC3_GCTL_PRTCAP_HOST);
|
|
|
|
/* Set GFLADJ_30MHZ as 20h as per XHCI spec default value */
|
|
dwc3_set_fladj(fsl_xhci->dwc3_reg, GFLADJ_30MHZ_DEFAULT);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int fsl_xhci_core_exit(struct fsl_xhci *fsl_xhci)
|
|
{
|
|
/*
|
|
* Currently fsl socs do not support PHY shutdown from
|
|
* sw. But this support may be added in future socs.
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
int xhci_hcd_init(int index, struct xhci_hccr **hccr, struct xhci_hcor **hcor)
|
|
{
|
|
struct fsl_xhci *ctx = &fsl_xhci;
|
|
int ret = 0;
|
|
|
|
ctx->hcd = (struct xhci_hccr *)ctr_addr[index];
|
|
ctx->dwc3_reg = (struct dwc3 *)((char *)(ctx->hcd) + DWC3_REG_OFFSET);
|
|
|
|
ret = board_usb_init(index, USB_INIT_HOST);
|
|
if (ret != 0) {
|
|
puts("Failed to initialize board for USB\n");
|
|
return ret;
|
|
}
|
|
|
|
fsl_apply_xhci_errata();
|
|
|
|
ret = fsl_xhci_core_init(ctx);
|
|
if (ret < 0) {
|
|
puts("Failed to initialize xhci\n");
|
|
return ret;
|
|
}
|
|
|
|
*hccr = (struct xhci_hccr *)ctx->hcd;
|
|
*hcor = (struct xhci_hcor *)((uintptr_t) *hccr
|
|
+ HC_LENGTH(xhci_readl(&(*hccr)->cr_capbase)));
|
|
|
|
debug("fsl-xhci: init hccr %lx and hcor %lx hc_length %lx\n",
|
|
(uintptr_t)*hccr, (uintptr_t)*hcor,
|
|
(uintptr_t)HC_LENGTH(xhci_readl(&(*hccr)->cr_capbase)));
|
|
|
|
return ret;
|
|
}
|
|
|
|
void xhci_hcd_stop(int index)
|
|
{
|
|
struct fsl_xhci *ctx = &fsl_xhci;
|
|
|
|
fsl_xhci_core_exit(ctx);
|
|
}
|