2 * PQ2FADS board support
4 * Copyright 2007 Freescale Semiconductor, Inc.
5 * Author: Scott Wood <scottwood@freescale.com>
7 * Loosely based on mp82xx ADS support by Vitaly Bordug <vbordug@ru.mvista.com>
8 * Copyright (c) 2006 MontaVista Software, Inc.
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License version 2 as published
12 * by the Free Software Foundation.
15 #include <linux/init.h>
16 #include <linux/interrupt.h>
17 #include <linux/fsl_devices.h>
18 #include <linux/of_platform.h>
23 #include <asm/machdep.h>
26 #include <sysdev/fsl_soc.h>
27 #include <sysdev/cpm2_pic.h>
32 static void __init
pq2fads_pic_init(void)
34 struct device_node
*np
= of_find_compatible_node(NULL
, NULL
, "fsl,cpm2-pic");
36 printk(KERN_ERR
"PIC init: can not find fsl,cpm2-pic node\n");
43 /* Initialize stuff for the 82xx CPLD IC and install demux */
44 pq2ads_pci_init_irq();
51 static struct cpm_pin pq2fads_pins
[] = {
53 {3, 30, CPM_PIN_OUTPUT
| CPM_PIN_SECONDARY
},
54 {3, 31, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
57 {3, 27, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
58 {3, 28, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
61 {1, 18, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
62 {1, 19, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
63 {1, 20, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
64 {1, 21, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
65 {1, 22, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
66 {1, 23, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
67 {1, 24, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
68 {1, 25, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
69 {1, 26, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
70 {1, 27, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
71 {1, 28, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
72 {1, 29, CPM_PIN_OUTPUT
| CPM_PIN_SECONDARY
},
73 {1, 30, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
74 {1, 31, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
75 {2, 18, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
76 {2, 19, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
79 {1, 4, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
80 {1, 5, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
81 {1, 6, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
82 {1, 7, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
83 {1, 8, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
84 {1, 9, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
85 {1, 10, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
86 {1, 11, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
87 {1, 12, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
88 {1, 13, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
89 {1, 14, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
90 {1, 15, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
91 {1, 16, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
92 {1, 17, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
93 {2, 16, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
94 {2, 17, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
97 static void __init
init_ioports(void)
101 for (i
= 0; i
< ARRAY_SIZE(pq2fads_pins
); i
++) {
102 struct cpm_pin
*pin
= &pq2fads_pins
[i
];
103 cpm2_set_pin(pin
->port
, pin
->pin
, pin
->flags
);
106 cpm2_clk_setup(CPM_CLK_SCC1
, CPM_BRG1
, CPM_CLK_RX
);
107 cpm2_clk_setup(CPM_CLK_SCC1
, CPM_BRG1
, CPM_CLK_TX
);
108 cpm2_clk_setup(CPM_CLK_SCC2
, CPM_BRG2
, CPM_CLK_RX
);
109 cpm2_clk_setup(CPM_CLK_SCC2
, CPM_BRG2
, CPM_CLK_TX
);
110 cpm2_clk_setup(CPM_CLK_FCC2
, CPM_CLK13
, CPM_CLK_RX
);
111 cpm2_clk_setup(CPM_CLK_FCC2
, CPM_CLK14
, CPM_CLK_TX
);
112 cpm2_clk_setup(CPM_CLK_FCC3
, CPM_CLK15
, CPM_CLK_RX
);
113 cpm2_clk_setup(CPM_CLK_FCC3
, CPM_CLK16
, CPM_CLK_TX
);
116 static void __init
pq2fads_setup_arch(void)
118 struct device_node
*np
;
119 __be32 __iomem
*bcsr
;
122 ppc_md
.progress("pq2fads_setup_arch()", 0);
126 np
= of_find_compatible_node(NULL
, NULL
, "fsl,pq2fads-bcsr");
128 printk(KERN_ERR
"No fsl,pq2fads-bcsr in device tree\n");
132 bcsr
= of_iomap(np
, 0);
135 printk(KERN_ERR
"Cannot map BCSR registers\n");
139 /* Enable the serial and ethernet ports */
141 clrbits32(&bcsr
[1], BCSR1_RS232_EN1
| BCSR1_RS232_EN2
| BCSR1_FETHIEN
);
142 setbits32(&bcsr
[1], BCSR1_FETH_RST
);
144 clrbits32(&bcsr
[3], BCSR3_FETHIEN2
);
145 setbits32(&bcsr
[3], BCSR3_FETH2_RST
);
151 /* Enable external IRQs */
152 clrbits32(&cpm2_immr
->im_siu_conf
.siu_82xx
.sc_siumcr
, 0x0c000000);
157 ppc_md
.progress("pq2fads_setup_arch(), finish", 0);
161 * Called very early, device-tree isn't unflattened
163 static int __init
pq2fads_probe(void)
165 unsigned long root
= of_get_flat_dt_root();
166 return of_flat_dt_is_compatible(root
, "fsl,pq2fads");
169 static struct of_device_id __initdata of_bus_ids
[] = {
172 { .name
= "localbus", },
176 static int __init
declare_of_platform_devices(void)
178 /* Publish the QE devices */
179 of_platform_bus_probe(NULL
, of_bus_ids
, NULL
);
182 machine_device_initcall(pq2fads
, declare_of_platform_devices
);
184 define_machine(pq2fads
)
186 .name
= "Freescale PQ2FADS",
187 .probe
= pq2fads_probe
,
188 .setup_arch
= pq2fads_setup_arch
,
189 .init_IRQ
= pq2fads_pic_init
,
190 .get_irq
= cpm2_get_irq
,
191 .calibrate_decr
= generic_calibrate_decr
,
192 .restart
= pq2_restart
,
193 .progress
= udbg_progress
,