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
21struct cpm_pin {
22	int port, pin, flags;
23};
24
25static __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
64static 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
79static void __init adder875_setup(void)
80{
81	cpm_reset();
82	init_ioports();
83}
84
85static const struct of_device_id of_bus_ids[] __initconst = {
86	{ .compatible = "simple-bus", },
87	{},
88};
89
90static int __init declare_of_platform_devices(void)
91{
92	of_platform_bus_probe(NULL, of_bus_ids, NULL);
93	return 0;
94}
95machine_device_initcall(adder875, declare_of_platform_devices);
96
97define_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