blob: 74631832e1a34c350a1fc6980f27cf73fad13e30 [file] [log] [blame]
Li Yang833e31e2007-10-19 19:38:45 +08001/*
2 * arch/powerpc/platforms/83xx/mpc837x_mds.c
3 *
4 * Copyright (C) 2007 Freescale Semiconductor, Inc. All rights reserved.
5 *
6 * MPC837x MDS board specific routines
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 */
13
14#include <linux/pci.h>
15#include <linux/of.h>
16#include <linux/of_platform.h>
17
18#include <asm/time.h>
19#include <asm/ipic.h>
20#include <asm/udbg.h>
21#include <asm/prom.h>
John Rigby76fe1ff2008-06-26 11:07:57 -060022#include <sysdev/fsl_pci.h>
Li Yang833e31e2007-10-19 19:38:45 +080023
24#include "mpc83xx.h"
25
Li Yange10241d2008-01-08 15:18:45 +080026#define BCSR12_USB_SER_MASK 0x8a
27#define BCSR12_USB_SER_PIN 0x80
28#define BCSR12_USB_SER_DEVICE 0x02
Li Yange10241d2008-01-08 15:18:45 +080029
30static int mpc837xmds_usb_cfg(void)
31{
32 struct device_node *np;
33 const void *phy_type, *mode;
34 void __iomem *bcsr_regs = NULL;
35 u8 bcsr12;
36 int ret;
37
38 ret = mpc837x_usb_cfg();
39 if (ret)
40 return ret;
41 /* Map BCSR area */
Li Yangd7f46192008-03-06 18:42:35 +080042 np = of_find_compatible_node(NULL, NULL, "fsl,mpc837xmds-bcsr");
Li Yange10241d2008-01-08 15:18:45 +080043 if (np) {
Li Yangd7f46192008-03-06 18:42:35 +080044 bcsr_regs = of_iomap(np, 0);
Li Yange10241d2008-01-08 15:18:45 +080045 of_node_put(np);
46 }
47 if (!bcsr_regs)
48 return -1;
49
50 np = of_find_node_by_name(NULL, "usb");
Julia Lawallfa9fc822010-08-29 21:47:18 +020051 if (!np) {
52 ret = -ENODEV;
53 goto out;
54 }
Li Yange10241d2008-01-08 15:18:45 +080055 phy_type = of_get_property(np, "phy_type", NULL);
56 if (phy_type && !strcmp(phy_type, "ulpi")) {
57 clrbits8(bcsr_regs + 12, BCSR12_USB_SER_PIN);
58 } else if (phy_type && !strcmp(phy_type, "serial")) {
59 mode = of_get_property(np, "dr_mode", NULL);
60 bcsr12 = in_8(bcsr_regs + 12) & ~BCSR12_USB_SER_MASK;
61 bcsr12 |= BCSR12_USB_SER_PIN;
62 if (mode && !strcmp(mode, "peripheral"))
63 bcsr12 |= BCSR12_USB_SER_DEVICE;
64 out_8(bcsr_regs + 12, bcsr12);
65 } else {
66 printk(KERN_ERR "USB DR: unsupported PHY\n");
67 }
68
69 of_node_put(np);
Julia Lawallfa9fc822010-08-29 21:47:18 +020070out:
Li Yange10241d2008-01-08 15:18:45 +080071 iounmap(bcsr_regs);
Julia Lawallfa9fc822010-08-29 21:47:18 +020072 return ret;
Li Yange10241d2008-01-08 15:18:45 +080073}
74
Li Yang833e31e2007-10-19 19:38:45 +080075/* ************************************************************************
76 *
77 * Setup the architecture
78 *
79 */
80static void __init mpc837x_mds_setup_arch(void)
81{
82#ifdef CONFIG_PCI
83 struct device_node *np;
84#endif
85
86 if (ppc_md.progress)
87 ppc_md.progress("mpc837x_mds_setup_arch()", 0);
88
89#ifdef CONFIG_PCI
Anton Vorontsov0585a152009-01-08 04:31:41 +030090 for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
Li Yang833e31e2007-10-19 19:38:45 +080091 mpc83xx_add_bridge(np);
Anton Vorontsov0585a152009-01-08 04:31:41 +030092 for_each_compatible_node(np, "pci", "fsl,mpc8314-pcie")
93 mpc83xx_add_bridge(np);
Li Yang833e31e2007-10-19 19:38:45 +080094#endif
Li Yange10241d2008-01-08 15:18:45 +080095 mpc837xmds_usb_cfg();
Li Yang833e31e2007-10-19 19:38:45 +080096}
97
Dmitry Eremin-Solenikov7669d582011-11-17 18:48:47 +040098machine_device_initcall(mpc837x_mds, mpc83xx_declare_of_platform_devices);
Li Yang833e31e2007-10-19 19:38:45 +080099
Li Yang833e31e2007-10-19 19:38:45 +0800100/*
101 * Called very early, MMU is off, device-tree isn't unflattened
102 */
103static int __init mpc837x_mds_probe(void)
104{
105 unsigned long root = of_get_flat_dt_root();
106
107 return of_flat_dt_is_compatible(root, "fsl,mpc837xmds");
108}
109
110define_machine(mpc837x_mds) {
111 .name = "MPC837x MDS",
112 .probe = mpc837x_mds_probe,
113 .setup_arch = mpc837x_mds_setup_arch,
Dmitry Eremin-Solenikovd4fb5eb2011-07-22 23:55:42 +0400114 .init_IRQ = mpc83xx_ipic_init_IRQ,
Li Yang833e31e2007-10-19 19:38:45 +0800115 .get_irq = ipic_get_irq,
116 .restart = mpc83xx_restart,
117 .time_init = mpc83xx_time_init,
118 .calibrate_decr = generic_calibrate_decr,
119 .progress = udbg_progress,
120};