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63716633 HS |
1 | /* |
2 | * Keymile mgcoge support | |
3 | * Copyright 2008 DENX Software Engineering GmbH | |
4 | * Author: Heiko Schocher <hs@denx.de> | |
5 | * | |
6 | * based on code from: | |
7 | * Copyright 2007 Freescale Semiconductor, Inc. | |
8 | * Author: Scott Wood <scottwood@freescale.com> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify it | |
11 | * under the terms of the GNU General Public License as published by the | |
12 | * Free Software Foundation; either version 2 of the License, or (at your | |
13 | * option) any later version. | |
14 | */ | |
15 | ||
16 | #include <linux/init.h> | |
17 | #include <linux/interrupt.h> | |
18 | #include <linux/fsl_devices.h> | |
19 | #include <linux/of_platform.h> | |
20 | ||
21 | #include <asm/io.h> | |
22 | #include <asm/cpm2.h> | |
23 | #include <asm/udbg.h> | |
24 | #include <asm/machdep.h> | |
25 | #include <asm/time.h> | |
26 | #include <asm/mpc8260.h> | |
27 | #include <asm/prom.h> | |
28 | ||
29 | #include <sysdev/fsl_soc.h> | |
30 | #include <sysdev/cpm2_pic.h> | |
31 | ||
32 | #include "pq2.h" | |
33 | ||
34 | static void __init mgcoge_pic_init(void) | |
35 | { | |
36 | struct device_node *np = of_find_compatible_node(NULL, NULL, "fsl,pq2-pic"); | |
37 | if (!np) { | |
38 | printk(KERN_ERR "PIC init: can not find cpm-pic node\n"); | |
39 | return; | |
40 | } | |
41 | ||
42 | cpm2_pic_init(np); | |
43 | of_node_put(np); | |
44 | } | |
45 | ||
46 | struct cpm_pin { | |
47 | int port, pin, flags; | |
48 | }; | |
49 | ||
50 | static __initdata struct cpm_pin mgcoge_pins[] = { | |
51 | ||
52 | /* SMC2 */ | |
9239c89b HS |
53 | {0, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
54 | {0, 9, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
63716633 HS |
55 | |
56 | /* SCC4 */ | |
9239c89b HS |
57 | {2, 25, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, |
58 | {2, 24, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
59 | {2, 9, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
60 | {2, 8, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
61 | {3, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
62 | {3, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
63 | ||
64 | /* FCC1 */ | |
65 | {0, 14, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
66 | {0, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
67 | {0, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
68 | {0, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
69 | {0, 18, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
70 | {0, 19, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
71 | {0, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
72 | {0, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
73 | {0, 26, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, | |
74 | {0, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, | |
75 | {0, 28, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, | |
76 | {0, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, | |
77 | {0, 30, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, | |
78 | {0, 31, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, | |
79 | ||
80 | {2, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
81 | {2, 23, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
82 | ||
83 | /* FCC2 */ | |
84 | {1, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
85 | {1, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
86 | {1, 20, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
87 | {1, 21, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
88 | {1, 22, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
89 | {1, 23, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
90 | {1, 24, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
91 | {1, 25, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
92 | {1, 26, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
93 | {1, 27, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
94 | {1, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
95 | {1, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, | |
96 | {1, 30, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
97 | {1, 31, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, | |
98 | ||
99 | {2, 18, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
100 | {2, 19, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, | |
101 | ||
102 | /* MDC */ | |
103 | {0, 13, CPM_PIN_OUTPUT | CPM_PIN_GPIO}, | |
104 | ||
105 | #if defined(CONFIG_I2C_CPM) | |
106 | /* I2C */ | |
107 | {3, 14, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_OPENDRAIN}, | |
108 | {3, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_OPENDRAIN}, | |
109 | #endif | |
63716633 HS |
110 | }; |
111 | ||
112 | static void __init init_ioports(void) | |
113 | { | |
114 | int i; | |
115 | ||
116 | for (i = 0; i < ARRAY_SIZE(mgcoge_pins); i++) { | |
117 | const struct cpm_pin *pin = &mgcoge_pins[i]; | |
9239c89b | 118 | cpm2_set_pin(pin->port, pin->pin, pin->flags); |
63716633 HS |
119 | } |
120 | ||
121 | cpm2_smc_clk_setup(CPM_CLK_SMC2, CPM_BRG8); | |
122 | cpm2_clk_setup(CPM_CLK_SCC4, CPM_CLK7, CPM_CLK_RX); | |
123 | cpm2_clk_setup(CPM_CLK_SCC4, CPM_CLK8, CPM_CLK_TX); | |
9239c89b HS |
124 | cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK10, CPM_CLK_RX); |
125 | cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK9, CPM_CLK_TX); | |
126 | cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK13, CPM_CLK_RX); | |
127 | cpm2_clk_setup(CPM_CLK_FCC2, CPM_CLK14, CPM_CLK_TX); | |
63716633 HS |
128 | } |
129 | ||
130 | static void __init mgcoge_setup_arch(void) | |
131 | { | |
132 | if (ppc_md.progress) | |
133 | ppc_md.progress("mgcoge_setup_arch()", 0); | |
134 | ||
135 | cpm2_reset(); | |
136 | ||
137 | /* When this is set, snooping CPM DMA from RAM causes | |
138 | * machine checks. See erratum SIU18. | |
139 | */ | |
140 | clrbits32(&cpm2_immr->im_siu_conf.siu_82xx.sc_bcr, MPC82XX_BCR_PLDP); | |
141 | ||
142 | init_ioports(); | |
143 | ||
144 | if (ppc_md.progress) | |
145 | ppc_md.progress("mgcoge_setup_arch(), finish", 0); | |
146 | } | |
147 | ||
148 | static __initdata struct of_device_id of_bus_ids[] = { | |
149 | { .compatible = "simple-bus", }, | |
150 | {}, | |
151 | }; | |
152 | ||
153 | static int __init declare_of_platform_devices(void) | |
154 | { | |
155 | of_platform_bus_probe(NULL, of_bus_ids, NULL); | |
156 | ||
157 | return 0; | |
158 | } | |
159 | machine_device_initcall(mgcoge, declare_of_platform_devices); | |
160 | ||
161 | /* | |
162 | * Called very early, device-tree isn't unflattened | |
163 | */ | |
164 | static int __init mgcoge_probe(void) | |
165 | { | |
166 | unsigned long root = of_get_flat_dt_root(); | |
167 | return of_flat_dt_is_compatible(root, "keymile,mgcoge"); | |
168 | } | |
169 | ||
170 | define_machine(mgcoge) | |
171 | { | |
172 | .name = "Keymile MGCOGE", | |
173 | .probe = mgcoge_probe, | |
174 | .setup_arch = mgcoge_setup_arch, | |
175 | .init_IRQ = mgcoge_pic_init, | |
176 | .get_irq = cpm2_get_irq, | |
177 | .calibrate_decr = generic_calibrate_decr, | |
178 | .restart = pq2_restart, | |
179 | .progress = udbg_progress, | |
180 | }; |