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/fs_pd.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