1 /*arch/powerpc/platforms/8xx/mpc86xads_setup.c
2 *
3 * Platform setup for the Freescale mpc86xads board
4 *
5 * Vitaly Bordug <vbordug@ru.mvista.com>
6 *
7 * Copyright 2005 MontaVista Software Inc.
8 *
9 * Heavily modified by Scott Wood <scottwood@freescale.com>
10 * Copyright 2007 Freescale Semiconductor, Inc.
11 *
12 * This file is licensed under the terms of the GNU General Public License
13 * version 2. This program is licensed "as is" without any warranty of any
14 * kind, whether express or implied.
15 */
16
17 #include <linux/init.h>
18 #include <linux/of_address.h>
19 #include <linux/of_fdt.h>
20 #include <linux/of_platform.h>
21
22 #include <asm/io.h>
23 #include <asm/machdep.h>
24 #include <asm/time.h>
25 #include <asm/8xx_immap.h>
26 #include <asm/cpm1.h>
27 #include <asm/udbg.h>
28
29 #include "mpc86xads.h"
30 #include "mpc8xx.h"
31 #include "pic.h"
32
33 struct cpm_pin {
34 int port, pin, flags;
35 };
36
37 static struct cpm_pin mpc866ads_pins[] = {
38 /* SMC1 */
39 {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
40 {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
41
42 /* SMC2 */
43 {CPM_PORTB, 21, CPM_PIN_INPUT}, /* RX */
44 {CPM_PORTB, 20, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
45
46 /* SCC1 */
47 {CPM_PORTA, 6, CPM_PIN_INPUT}, /* CLK1 */
48 {CPM_PORTA, 7, CPM_PIN_INPUT}, /* CLK2 */
49 {CPM_PORTA, 14, CPM_PIN_INPUT}, /* TX */
50 {CPM_PORTA, 15, CPM_PIN_INPUT}, /* RX */
51 {CPM_PORTB, 19, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */
52 {CPM_PORTC, 10, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* RENA */
53 {CPM_PORTC, 11, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CLSN */
54
55 /* MII */
56 {CPM_PORTD, 3, CPM_PIN_OUTPUT},
57 {CPM_PORTD, 4, CPM_PIN_OUTPUT},
58 {CPM_PORTD, 5, CPM_PIN_OUTPUT},
59 {CPM_PORTD, 6, CPM_PIN_OUTPUT},
60 {CPM_PORTD, 7, CPM_PIN_OUTPUT},
61 {CPM_PORTD, 8, CPM_PIN_OUTPUT},
62 {CPM_PORTD, 9, CPM_PIN_OUTPUT},
63 {CPM_PORTD, 10, CPM_PIN_OUTPUT},
64 {CPM_PORTD, 11, CPM_PIN_OUTPUT},
65 {CPM_PORTD, 12, CPM_PIN_OUTPUT},
66 {CPM_PORTD, 13, CPM_PIN_OUTPUT},
67 {CPM_PORTD, 14, CPM_PIN_OUTPUT},
68 {CPM_PORTD, 15, CPM_PIN_OUTPUT},
69
70 /* I2C */
71 {CPM_PORTB, 26, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
72 {CPM_PORTB, 27, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
73 };
74
75 static void __init init_ioports(void)
76 {
77 int i;
78
79 for (i = 0; i < ARRAY_SIZE(mpc866ads_pins); i++) {
80 struct cpm_pin *pin = &mpc866ads_pins[i];
81 cpm1_set_pin(pin->port, pin->pin, pin->flags);
82 }
83
84 cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
85 cpm1_clk_setup(CPM_CLK_SMC2, CPM_BRG2, CPM_CLK_RTX);
86 cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK1, CPM_CLK_TX);
87 cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_RX);
88
89 /* Set FEC1 and FEC2 to MII mode */
90 clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
91 }
92
93 static void __init mpc86xads_setup_arch(void)
94 {
95 struct device_node *np;
96 u32 __iomem *bcsr_io;
97
98 cpm_reset();
99 init_ioports();
100
101 np = of_find_compatible_node(NULL, NULL, "fsl,mpc866ads-bcsr");
102 if (!np) {
103 printk(KERN_CRIT "Could not find fsl,mpc866ads-bcsr node\n");
104 return;
105 }
106
107 bcsr_io = of_iomap(np, 0);
108 of_node_put(np);
109
110 if (bcsr_io == NULL) {
111 printk(KERN_CRIT "Could not remap BCSR\n");
112 return;
113 }
114
115 clrbits32(bcsr_io, BCSR1_RS232EN_1 | BCSR1_RS232EN_2 | BCSR1_ETHEN);
116 iounmap(bcsr_io);
117 }
118
119 static const struct of_device_id of_bus_ids[] __initconst = {
120 { .name = "soc", },
121 { .name = "cpm", },
122 { .name = "localbus", },
123 {},
124 };
125
126 static int __init declare_of_platform_devices(void)
127 {
128 of_platform_bus_probe(NULL, of_bus_ids, NULL);
129
130 return 0;
131 }
132 machine_device_initcall(mpc86x_ads, declare_of_platform_devices);
133
134 define_machine(mpc86x_ads) {
135 .name = "MPC86x ADS",
136 .compatible = "fsl,mpc866ads",
137 .setup_arch = mpc86xads_setup_arch,
138 .init_IRQ = mpc8xx_pic_init,
139 .get_irq = mpc8xx_get_irq,
140 .restart = mpc8xx_restart,
141 .calibrate_decr = mpc8xx_calibrate_decr,
142 .set_rtc_time = mpc8xx_set_rtc_time,
143 .get_rtc_time = mpc8xx_get_rtc_time,
144 .progress = udbg_progress,
145 };
146
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