2 * Keymile km82xx support
3 * Copyright 2008-2011 DENX Software Engineering GmbH
4 * Author: Heiko Schocher <hs@denx.de>
7 * Copyright 2007 Freescale Semiconductor, Inc.
8 * Author: Scott Wood <scottwood@freescale.com>
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.
16 #include <linux/init.h>
17 #include <linux/interrupt.h>
18 #include <linux/fsl_devices.h>
19 #include <linux/of_platform.h>
24 #include <asm/machdep.h>
26 #include <asm/mpc8260.h>
29 #include <sysdev/fsl_soc.h>
30 #include <sysdev/cpm2_pic.h>
34 static void __init
km82xx_pic_init(void)
36 struct device_node
*np
= of_find_compatible_node(NULL
, NULL
,
39 printk(KERN_ERR
"PIC init: can not find cpm-pic node\n");
51 static __initdata
struct cpm_pin km82xx_pins
[] = {
54 {0, 8, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
55 {0, 9, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
58 {2, 21, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
59 {2, 15, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
60 {3, 31, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
61 {3, 30, CPM_PIN_OUTPUT
| CPM_PIN_SECONDARY
},
64 {2, 25, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
65 {2, 24, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
66 {2, 9, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
67 {2, 8, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
68 {3, 22, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
69 {3, 21, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
72 {0, 14, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
73 {0, 15, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
74 {0, 16, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
75 {0, 17, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
76 {0, 18, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
77 {0, 19, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
78 {0, 20, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
79 {0, 21, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
80 {0, 26, CPM_PIN_INPUT
| CPM_PIN_SECONDARY
},
81 {0, 27, CPM_PIN_INPUT
| CPM_PIN_SECONDARY
},
82 {0, 28, CPM_PIN_OUTPUT
| CPM_PIN_SECONDARY
},
83 {0, 29, CPM_PIN_OUTPUT
| CPM_PIN_SECONDARY
},
84 {0, 30, CPM_PIN_INPUT
| CPM_PIN_SECONDARY
},
85 {0, 31, CPM_PIN_INPUT
| CPM_PIN_SECONDARY
},
87 {2, 22, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
88 {2, 23, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
91 {1, 18, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
92 {1, 19, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
93 {1, 20, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
94 {1, 21, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
95 {1, 22, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
96 {1, 23, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
97 {1, 24, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
98 {1, 25, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
99 {1, 26, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
100 {1, 27, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
101 {1, 28, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
102 {1, 29, CPM_PIN_OUTPUT
| CPM_PIN_SECONDARY
},
103 {1, 30, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
104 {1, 31, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
106 {2, 18, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
107 {2, 19, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
110 {0, 13, CPM_PIN_OUTPUT
| CPM_PIN_GPIO
},
112 #if defined(CONFIG_I2C_CPM)
114 {3, 14, CPM_PIN_INPUT
| CPM_PIN_SECONDARY
| CPM_PIN_OPENDRAIN
},
115 {3, 15, CPM_PIN_INPUT
| CPM_PIN_SECONDARY
| CPM_PIN_OPENDRAIN
},
119 {0, 10, CPM_PIN_OUTPUT
| CPM_PIN_GPIO
}, /* FULL_SPEED */
120 {0, 11, CPM_PIN_OUTPUT
| CPM_PIN_GPIO
}, /*/SLAVE */
121 {2, 10, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
}, /* RXN */
122 {2, 11, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
}, /* RXP */
123 {2, 20, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
}, /* /OE */
124 {2, 27, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
}, /* RXCLK */
125 {3, 23, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
}, /* TXP */
126 {3, 24, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
}, /* TXN */
127 {3, 25, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
}, /* RXD */
130 static void __init
init_ioports(void)
134 for (i
= 0; i
< ARRAY_SIZE(km82xx_pins
); i
++) {
135 const struct cpm_pin
*pin
= &km82xx_pins
[i
];
136 cpm2_set_pin(pin
->port
, pin
->pin
, pin
->flags
);
139 cpm2_smc_clk_setup(CPM_CLK_SMC2
, CPM_BRG8
);
140 cpm2_clk_setup(CPM_CLK_SCC1
, CPM_CLK11
, CPM_CLK_RX
);
141 cpm2_clk_setup(CPM_CLK_SCC1
, CPM_CLK11
, CPM_CLK_TX
);
142 cpm2_clk_setup(CPM_CLK_SCC3
, CPM_CLK5
, CPM_CLK_RTX
);
143 cpm2_clk_setup(CPM_CLK_SCC4
, CPM_CLK7
, CPM_CLK_RX
);
144 cpm2_clk_setup(CPM_CLK_SCC4
, CPM_CLK8
, CPM_CLK_TX
);
145 cpm2_clk_setup(CPM_CLK_FCC1
, CPM_CLK10
, CPM_CLK_RX
);
146 cpm2_clk_setup(CPM_CLK_FCC1
, CPM_CLK9
, CPM_CLK_TX
);
147 cpm2_clk_setup(CPM_CLK_FCC2
, CPM_CLK13
, CPM_CLK_RX
);
148 cpm2_clk_setup(CPM_CLK_FCC2
, CPM_CLK14
, CPM_CLK_TX
);
150 /* Force USB FULL SPEED bit to '1' */
151 setbits32(&cpm2_immr
->im_ioport
.iop_pdata
, 1 << (31 - 10));
152 /* clear USB_SLAVE */
153 clrbits32(&cpm2_immr
->im_ioport
.iop_pdata
, 1 << (31 - 11));
156 static void __init
km82xx_setup_arch(void)
159 ppc_md
.progress("km82xx_setup_arch()", 0);
163 /* When this is set, snooping CPM DMA from RAM causes
164 * machine checks. See erratum SIU18.
166 clrbits32(&cpm2_immr
->im_siu_conf
.siu_82xx
.sc_bcr
, MPC82XX_BCR_PLDP
);
171 ppc_md
.progress("km82xx_setup_arch(), finish", 0);
174 static __initdata
struct of_device_id of_bus_ids
[] = {
175 { .compatible
= "simple-bus", },
179 static int __init
declare_of_platform_devices(void)
181 of_platform_bus_probe(NULL
, of_bus_ids
, NULL
);
185 machine_device_initcall(km82xx
, declare_of_platform_devices
);
188 * Called very early, device-tree isn't unflattened
190 static int __init
km82xx_probe(void)
192 unsigned long root
= of_get_flat_dt_root();
193 return of_flat_dt_is_compatible(root
, "keymile,km82xx");
196 define_machine(km82xx
)
198 .name
= "Keymile km82xx",
199 .probe
= km82xx_probe
,
200 .setup_arch
= km82xx_setup_arch
,
201 .init_IRQ
= km82xx_pic_init
,
202 .get_irq
= cpm2_get_irq
,
203 .calibrate_decr
= generic_calibrate_decr
,
204 .restart
= pq2_restart
,
205 .progress
= udbg_progress
,