104 lines
2.3 KiB
C
104 lines
2.3 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
||
|
|
/*
|
||
|
|
* arch/powerpc/platforms/83xx/mpc837x_mds.c
|
||
|
|
*
|
||
|
|
* Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
|
||
|
|
*
|
||
|
|
* MPC837x MDS board specific routines
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/pci.h>
|
||
|
|
#include <linux/of.h>
|
||
|
|
#include <linux/of_platform.h>
|
||
|
|
|
||
|
|
#include <asm/time.h>
|
||
|
|
#include <asm/ipic.h>
|
||
|
|
#include <asm/udbg.h>
|
||
|
|
#include <asm/prom.h>
|
||
|
|
#include <sysdev/fsl_pci.h>
|
||
|
|
|
||
|
|
#include "mpc83xx.h"
|
||
|
|
|
||
|
|
#define BCSR12_USB_SER_MASK 0x8a
|
||
|
|
#define BCSR12_USB_SER_PIN 0x80
|
||
|
|
#define BCSR12_USB_SER_DEVICE 0x02
|
||
|
|
|
||
|
|
static int mpc837xmds_usb_cfg(void)
|
||
|
|
{
|
||
|
|
struct device_node *np;
|
||
|
|
const void *phy_type, *mode;
|
||
|
|
void __iomem *bcsr_regs = NULL;
|
||
|
|
u8 bcsr12;
|
||
|
|
int ret;
|
||
|
|
|
||
|
|
ret = mpc837x_usb_cfg();
|
||
|
|
if (ret)
|
||
|
|
return ret;
|
||
|
|
/* Map BCSR area */
|
||
|
|
np = of_find_compatible_node(NULL, NULL, "fsl,mpc837xmds-bcsr");
|
||
|
|
if (np) {
|
||
|
|
bcsr_regs = of_iomap(np, 0);
|
||
|
|
of_node_put(np);
|
||
|
|
}
|
||
|
|
if (!bcsr_regs)
|
||
|
|
return -1;
|
||
|
|
|
||
|
|
np = of_find_node_by_name(NULL, "usb");
|
||
|
|
if (!np) {
|
||
|
|
ret = -ENODEV;
|
||
|
|
goto out;
|
||
|
|
}
|
||
|
|
phy_type = of_get_property(np, "phy_type", NULL);
|
||
|
|
if (phy_type && !strcmp(phy_type, "ulpi")) {
|
||
|
|
clrbits8(bcsr_regs + 12, BCSR12_USB_SER_PIN);
|
||
|
|
} else if (phy_type && !strcmp(phy_type, "serial")) {
|
||
|
|
mode = of_get_property(np, "dr_mode", NULL);
|
||
|
|
bcsr12 = in_8(bcsr_regs + 12) & ~BCSR12_USB_SER_MASK;
|
||
|
|
bcsr12 |= BCSR12_USB_SER_PIN;
|
||
|
|
if (mode && !strcmp(mode, "peripheral"))
|
||
|
|
bcsr12 |= BCSR12_USB_SER_DEVICE;
|
||
|
|
out_8(bcsr_regs + 12, bcsr12);
|
||
|
|
} else {
|
||
|
|
printk(KERN_ERR "USB DR: unsupported PHY\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
of_node_put(np);
|
||
|
|
out:
|
||
|
|
iounmap(bcsr_regs);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ************************************************************************
|
||
|
|
*
|
||
|
|
* Setup the architecture
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
static void __init mpc837x_mds_setup_arch(void)
|
||
|
|
{
|
||
|
|
mpc83xx_setup_arch();
|
||
|
|
mpc837xmds_usb_cfg();
|
||
|
|
}
|
||
|
|
|
||
|
|
machine_device_initcall(mpc837x_mds, mpc83xx_declare_of_platform_devices);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Called very early, MMU is off, device-tree isn't unflattened
|
||
|
|
*/
|
||
|
|
static int __init mpc837x_mds_probe(void)
|
||
|
|
{
|
||
|
|
return of_machine_is_compatible("fsl,mpc837xmds");
|
||
|
|
}
|
||
|
|
|
||
|
|
define_machine(mpc837x_mds) {
|
||
|
|
.name = "MPC837x MDS",
|
||
|
|
.probe = mpc837x_mds_probe,
|
||
|
|
.setup_arch = mpc837x_mds_setup_arch,
|
||
|
|
.discover_phbs = mpc83xx_setup_pci,
|
||
|
|
.init_IRQ = mpc83xx_ipic_init_IRQ,
|
||
|
|
.get_irq = ipic_get_irq,
|
||
|
|
.restart = mpc83xx_restart,
|
||
|
|
.time_init = mpc83xx_time_init,
|
||
|
|
.calibrate_decr = generic_calibrate_decr,
|
||
|
|
.progress = udbg_progress,
|
||
|
|
};
|