1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Analogue & Micro Adder MPC875 board support
3 *
4 * Author: Scott Wood <scottwood@freescale.com>
5 *
6 * Copyright (c) 2007 Freescale Semiconductor, Inc.
7 */
8
9 #include <linux/init.h>
10 #include <linux/of_platform.h>
11
12 #include <asm/time.h>
13 #include <asm/machdep.h>
14 #include <asm/cpm1.h>
15 #include <asm/8xx_immap.h>
16 #include <asm/udbg.h>
17
18 #include "mpc8xx.h"
19 #include "pic.h"
20
21 struct cpm_pin {
22 int port, pin, flags;
23 };
24
25 static __initdata struct cpm_pin adder875_pins[] = {
26 /* SMC1 */
27 {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
28 {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
29
30 /* MII1 */
31 {CPM_PORTA, 0, CPM_PIN_INPUT},
32 {CPM_PORTA, 1, CPM_PIN_INPUT},
33 {CPM_PORTA, 2, CPM_PIN_INPUT},
34 {CPM_PORTA, 3, CPM_PIN_INPUT},
35 {CPM_PORTA, 4, CPM_PIN_OUTPUT},
36 {CPM_PORTA, 10, CPM_PIN_OUTPUT},
37 {CPM_PORTA, 11, CPM_PIN_OUTPUT},
38 {CPM_PORTB, 19, CPM_PIN_INPUT},
39 {CPM_PORTB, 31, CPM_PIN_INPUT},
40 {CPM_PORTC, 12, CPM_PIN_INPUT},
41 {CPM_PORTC, 13, CPM_PIN_INPUT},
42 {CPM_PORTE, 30, CPM_PIN_OUTPUT},
43 {CPM_PORTE, 31, CPM_PIN_OUTPUT},
44
45 /* MII2 */
46 {CPM_PORTE, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
47 {CPM_PORTE, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
48 {CPM_PORTE, 16, CPM_PIN_OUTPUT},
49 {CPM_PORTE, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
50 {CPM_PORTE, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
51 {CPM_PORTE, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
52 {CPM_PORTE, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
53 {CPM_PORTE, 21, CPM_PIN_OUTPUT},
54 {CPM_PORTE, 22, CPM_PIN_OUTPUT},
55 {CPM_PORTE, 23, CPM_PIN_OUTPUT},
56 {CPM_PORTE, 24, CPM_PIN_OUTPUT},
57 {CPM_PORTE, 25, CPM_PIN_OUTPUT},
58 {CPM_PORTE, 26, CPM_PIN_OUTPUT},
59 {CPM_PORTE, 27, CPM_PIN_OUTPUT},
60 {CPM_PORTE, 28, CPM_PIN_OUTPUT},
61 {CPM_PORTE, 29, CPM_PIN_OUTPUT},
62 };
63
64 static void __init init_ioports(void)
65 {
66 int i;
67
68 for (i = 0; i < ARRAY_SIZE(adder875_pins); i++) {
69 const struct cpm_pin *pin = &adder875_pins[i];
70 cpm1_set_pin(pin->port, pin->pin, pin->flags);
71 }
72
73 cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
74
75 /* Set FEC1 and FEC2 to MII mode */
76 clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
77 }
78
79 static void __init adder875_setup(void)
80 {
81 cpm_reset();
82 init_ioports();
83 }
84
85 static const struct of_device_id of_bus_ids[] __initconst = {
86 { .compatible = "simple-bus", },
87 {},
88 };
89
90 static int __init declare_of_platform_devices(void)
91 {
92 of_platform_bus_probe(NULL, of_bus_ids, NULL);
93 return 0;
94 }
95 machine_device_initcall(adder875, declare_of_platform_devices);
96
97 define_machine(adder875) {
98 .name = "Adder MPC875",
99 .compatible = "analogue-and-micro,adder875",
100 .setup_arch = adder875_setup,
101 .init_IRQ = mpc8xx_pic_init,
102 .get_irq = mpc8xx_get_irq,
103 .restart = mpc8xx_restart,
104 .progress = udbg_progress,
105 };
106
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