2 * Copyright (C) Freescale Semicondutor, Inc. 2006. All rights reserved.
4 * Author: Li Yang <LeoLi@freescale.com>
5 * Yin Olivia <Hong-hua.Yin@freescale.com>
8 * MPC8360E MDS board specific routines.
11 * Jun 21, 2006 Initial version
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
19 #include <linux/stddef.h>
20 #include <linux/kernel.h>
21 #include <linux/compiler.h>
22 #include <linux/init.h>
23 #include <linux/errno.h>
24 #include <linux/reboot.h>
25 #include <linux/pci.h>
26 #include <linux/kdev_t.h>
27 #include <linux/major.h>
28 #include <linux/console.h>
29 #include <linux/delay.h>
30 #include <linux/seq_file.h>
31 #include <linux/root_dev.h>
32 #include <linux/initrd.h>
33 #include <linux/of_platform.h>
34 #include <linux/of_device.h>
36 #include <asm/system.h>
37 #include <asm/atomic.h>
40 #include <asm/machdep.h>
45 #include <sysdev/fsl_soc.h>
46 #include <sysdev/fsl_pci.h>
47 #include <sysdev/simple_gpio.h>
49 #include <asm/qe_ic.h>
55 #define DBG(fmt...) udbg_printf(fmt)
60 /* ************************************************************************
62 * Setup the architecture
65 static void __init mpc836x_mds_setup_arch(void)
67 struct device_node *np;
68 u8 __iomem *bcsr_regs = NULL;
71 ppc_md.progress("mpc836x_mds_setup_arch()", 0);
74 np = of_find_node_by_name(NULL, "bcsr");
78 of_address_to_resource(np, 0, &res);
79 bcsr_regs = ioremap(res.start, res.end - res.start +1);
84 for_each_compatible_node(np, "pci", "fsl,mpc8349-pci")
85 mpc83xx_add_bridge(np);
88 #ifdef CONFIG_QUICC_ENGINE
91 if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
95 for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;)
98 /* Must fixup Par IO before QE GPIO chips are registered. */
99 par_io_config_pin(1, 2, 1, 0, 3, 0); /* USBOE */
100 par_io_config_pin(1, 3, 1, 0, 3, 0); /* USBTP */
101 par_io_config_pin(1, 8, 1, 0, 1, 0); /* USBTN */
102 par_io_config_pin(1, 10, 2, 0, 3, 0); /* USBRXD */
103 par_io_config_pin(1, 9, 2, 1, 3, 0); /* USBRP */
104 par_io_config_pin(1, 11, 2, 1, 3, 0); /* USBRN */
105 par_io_config_pin(2, 20, 2, 0, 1, 0); /* CLK21 */
106 #endif /* CONFIG_QE_USB */
109 if ((np = of_find_compatible_node(NULL, "network", "ucc_geth"))
113 /* Reset the Ethernet PHY */
114 #define BCSR9_GETHRST 0x20
115 clrbits8(&bcsr_regs[9], BCSR9_GETHRST);
117 setbits8(&bcsr_regs[9], BCSR9_GETHRST);
119 /* handle mpc8360ea rev.2.1 erratum 2: RGMII Timing */
120 svid = mfspr(SPRN_SVR);
121 if (svid == 0x80480021) {
124 immap = ioremap(get_immrbase() + 0x14a8, 8);
127 * IMMR + 0x14A8[4:5] = 11 (clk delay for UCC 2)
128 * IMMR + 0x14A8[18:19] = 11 (clk delay for UCC 1)
130 setbits32(immap, 0x0c003000);
133 * IMMR + 0x14AC[20:27] = 10101010
134 * (data delay for both UCC's)
136 clrsetbits_be32(immap + 4, 0xff0, 0xaa0);
144 #endif /* CONFIG_QUICC_ENGINE */
147 static struct of_device_id mpc836x_ids[] = {
149 { .compatible = "soc", },
150 { .compatible = "simple-bus", },
152 { .compatible = "fsl,qe", },
156 static int __init mpc836x_declare_of_platform_devices(void)
158 /* Publish the QE devices */
159 of_platform_bus_probe(NULL, mpc836x_ids, NULL);
163 machine_device_initcall(mpc836x_mds, mpc836x_declare_of_platform_devices);
166 static int __init mpc836x_usb_cfg(void)
169 struct device_node *np;
173 np = of_find_compatible_node(NULL, NULL, "fsl,mpc8360mds-bcsr");
177 bcsr = of_iomap(np, 0);
182 np = of_find_compatible_node(NULL, NULL, "fsl,mpc8323-qe-usb");
188 #define BCSR8_TSEC1M_MASK (0x3 << 6)
189 #define BCSR8_TSEC1M_RGMII (0x0 << 6)
190 #define BCSR8_TSEC2M_MASK (0x3 << 4)
191 #define BCSR8_TSEC2M_RGMII (0x0 << 4)
193 * Default is GMII (2), but we should set it to RGMII (0) if we use
194 * USB (Eth PHY is in RGMII mode anyway).
196 clrsetbits_8(&bcsr[8], BCSR8_TSEC1M_MASK | BCSR8_TSEC2M_MASK,
197 BCSR8_TSEC1M_RGMII | BCSR8_TSEC2M_RGMII);
199 #define BCSR13_USBMASK 0x0f
200 #define BCSR13_nUSBEN 0x08 /* 1 - Disable, 0 - Enable */
201 #define BCSR13_USBSPEED 0x04 /* 1 - Full, 0 - Low */
202 #define BCSR13_USBMODE 0x02 /* 1 - Host, 0 - Function */
203 #define BCSR13_nUSBVCC 0x01 /* 1 - gets VBUS, 0 - supplies VBUS */
205 clrsetbits_8(&bcsr[13], BCSR13_USBMASK, BCSR13_USBSPEED);
207 mode = of_get_property(np, "mode", NULL);
208 if (mode && !strcmp(mode, "peripheral")) {
209 setbits8(&bcsr[13], BCSR13_nUSBVCC);
210 qe_usb_clock_set(QE_CLK21, 48000000);
212 setbits8(&bcsr[13], BCSR13_USBMODE);
214 * The BCSR GPIOs are used to control power and
215 * speed of the USB transceiver. This is needed for
218 simple_gpiochip_init("fsl,mpc8360mds-bcsr-gpio");
226 machine_arch_initcall(mpc836x_mds, mpc836x_usb_cfg);
227 #endif /* CONFIG_QE_USB */
229 static void __init mpc836x_mds_init_IRQ(void)
231 struct device_node *np;
233 np = of_find_node_by_type(NULL, "ipic");
239 /* Initialize the default interrupt mapping priorities,
240 * in case the boot rom changed something on us.
242 ipic_set_default_priority();
245 #ifdef CONFIG_QUICC_ENGINE
246 np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic");
248 np = of_find_node_by_type(NULL, "qeic");
252 qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic);
254 #endif /* CONFIG_QUICC_ENGINE */
258 * Called very early, MMU is off, device-tree isn't unflattened
260 static int __init mpc836x_mds_probe(void)
262 unsigned long root = of_get_flat_dt_root();
264 return of_flat_dt_is_compatible(root, "MPC836xMDS");
267 define_machine(mpc836x_mds) {
268 .name = "MPC836x MDS",
269 .probe = mpc836x_mds_probe,
270 .setup_arch = mpc836x_mds_setup_arch,
271 .init_IRQ = mpc836x_mds_init_IRQ,
272 .get_irq = ipic_get_irq,
273 .restart = mpc83xx_restart,
274 .time_init = mpc83xx_time_init,
275 .calibrate_decr = generic_calibrate_decr,
276 .progress = udbg_progress,