2 * arch/powerpc/platforms/83xx/mpc834x_mds.c
4 * MPC834x MDS board specific routines
6 * Maintainer: Kumar Gala <galak@kernel.crashing.org>
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.
14 #include <linux/stddef.h>
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/errno.h>
18 #include <linux/reboot.h>
19 #include <linux/pci.h>
20 #include <linux/kdev_t.h>
21 #include <linux/major.h>
22 #include <linux/console.h>
23 #include <linux/delay.h>
24 #include <linux/seq_file.h>
25 #include <linux/root_dev.h>
27 #include <asm/system.h>
28 #include <asm/atomic.h>
31 #include <asm/machdep.h>
33 #include <asm/bootinfo.h>
37 #include <sysdev/fsl_soc.h>
42 unsigned long isa_io_base = 0;
43 unsigned long isa_mem_base = 0;
46 #define BCSR5_INT_USB 0x02
47 /* Note: This is only for PB, not for PB+PIB
48 * On PB only port0 is connected using ULPI */
49 static int mpc834x_usb_cfg(void)
51 unsigned long sccr, sicrl;
53 void __iomem *bcsr_regs = NULL;
55 struct device_node *np = NULL;
58 if ((np = of_find_compatible_node(np, "usb", "fsl-usb2-dr")) != NULL)
60 if ((np = of_find_compatible_node(np, "usb", "fsl-usb2-mph")) != NULL){
63 "There is only one USB port on PB board! \n");
65 } else if (!port0_is_dr)
66 /* No usb port enabled */
70 immap = ioremap(get_immrbase(), 0x1000);
75 sccr = in_be32(immap + MPC83XX_SCCR_OFFS);
77 sccr |= MPC83XX_SCCR_USB_DRCM_11; /* 1:3 */
79 sccr |= MPC83XX_SCCR_USB_MPHCM_11; /* 1:3 */
80 out_be32(immap + MPC83XX_SCCR_OFFS, sccr);
83 sicrl = in_be32(immap + MPC83XX_SICRL_OFFS);
86 sicrl |= MPC83XX_SICRL_USB0;
88 sicrl &= ~(MPC83XX_SICRL_USB0);
89 out_be32(immap + MPC83XX_SICRL_OFFS, sicrl);
94 np = of_find_node_by_name(NULL, "bcsr");
98 of_address_to_resource(np, 0, &res);
99 bcsr_regs = ioremap(res.start, res.end - res.start + 1);
106 * if MDS board is plug into PIB board,
107 * force to use the PHY on MDS board
109 bcsr5 = in_8(bcsr_regs + 5);
110 if (!(bcsr5 & BCSR5_INT_USB))
111 out_8(bcsr_regs + 5, (bcsr5 | BCSR5_INT_USB));
116 /* ************************************************************************
118 * Setup the architecture
121 static void __init mpc834x_mds_setup_arch(void)
123 struct device_node *np;
126 ppc_md.progress("mpc834x_mds_setup_arch()", 0);
128 np = of_find_node_by_type(NULL, "cpu");
130 const unsigned int *fp =
131 get_property(np, "clock-frequency", NULL);
133 loops_per_jiffy = *fp / HZ;
135 loops_per_jiffy = 50000000 / HZ;
140 for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;)
143 ppc_md.pci_exclude_device = mpc83xx_exclude_device;
148 #ifdef CONFIG_ROOT_NFS
151 ROOT_DEV = Root_HDA1;
155 static void __init mpc834x_mds_init_IRQ(void)
157 struct device_node *np;
159 np = of_find_node_by_type(NULL, "ipic");
165 /* Initialize the default interrupt mapping priorities,
166 * in case the boot rom changed something on us.
168 ipic_set_default_priority();
171 #if defined(CONFIG_I2C_MPC) && defined(CONFIG_SENSORS_DS1374)
172 extern ulong ds1374_get_rtc_time(void);
173 extern int ds1374_set_rtc_time(ulong);
175 static int __init mpc834x_rtc_hookup(void)
179 if (!machine_is(mpc834x_mds))
182 ppc_md.get_rtc_time = ds1374_get_rtc_time;
183 ppc_md.set_rtc_time = ds1374_set_rtc_time;
186 tv.tv_sec = (ppc_md.get_rtc_time) ();
187 do_settimeofday(&tv);
192 late_initcall(mpc834x_rtc_hookup);
196 * Called very early, MMU is off, device-tree isn't unflattened
198 static int __init mpc834x_mds_probe(void)
200 unsigned long root = of_get_flat_dt_root();
202 return of_flat_dt_is_compatible(root, "MPC834xMDS");
205 define_machine(mpc834x_mds) {
206 .name = "MPC834x MDS",
207 .probe = mpc834x_mds_probe,
208 .setup_arch = mpc834x_mds_setup_arch,
209 .init_IRQ = mpc834x_mds_init_IRQ,
210 .get_irq = ipic_get_irq,
211 .restart = mpc83xx_restart,
212 .time_init = mpc83xx_time_init,
213 .calibrate_decr = generic_calibrate_decr,
214 .progress = udbg_progress,