mpc86xads_setup.c

  1/*arch/powerpc/platforms/8xx/mpc86xads_setup.c
  2 *
  3 * Platform setup for the Freescale mpc86xads board
  4 *
  5 * Vitaly Bordug <vbordug@ru.mvista.com>
  6 *
  7 * Copyright 2005 MontaVista Software Inc.
  8 *
  9 * Heavily modified by Scott Wood <scottwood@freescale.com>
 10 * Copyright 2007 Freescale Semiconductor, Inc.
 11 *
 12 * This file is licensed under the terms of the GNU General Public License
 13 * version 2. This program is licensed "as is" without any warranty of any
 14 * kind, whether express or implied.
 15 */
 16
 17#include <linux/init.h>
 18#include <linux/of_address.h>
 19#include <linux/of_fdt.h>
 20#include <linux/of_platform.h>
 21
 22#include <asm/io.h>
 23#include <asm/machdep.h>
 24#include <asm/time.h>
 25#include <asm/8xx_immap.h>
 26#include <asm/cpm1.h>
 27#include <asm/udbg.h>
 28
 29#include "mpc86xads.h"
 30#include "mpc8xx.h"
 31#include "pic.h"
 32
 33struct cpm_pin {
 34	int port, pin, flags;
 35};
 36
 37static struct cpm_pin mpc866ads_pins[] = {
 38	/* SMC1 */
 39	{CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
 40	{CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
 41
 42	/* SMC2 */
 43	{CPM_PORTB, 21, CPM_PIN_INPUT}, /* RX */
 44	{CPM_PORTB, 20, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
 45
 46	/* SCC1 */
 47	{CPM_PORTA, 6, CPM_PIN_INPUT}, /* CLK1 */
 48	{CPM_PORTA, 7, CPM_PIN_INPUT}, /* CLK2 */
 49	{CPM_PORTA, 14, CPM_PIN_INPUT}, /* TX */
 50	{CPM_PORTA, 15, CPM_PIN_INPUT}, /* RX */
 51	{CPM_PORTB, 19, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */
 52	{CPM_PORTC, 10, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* RENA */
 53	{CPM_PORTC, 11, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CLSN */
 54
 55	/* MII */
 56	{CPM_PORTD, 3, CPM_PIN_OUTPUT},
 57	{CPM_PORTD, 4, CPM_PIN_OUTPUT},
 58	{CPM_PORTD, 5, CPM_PIN_OUTPUT},
 59	{CPM_PORTD, 6, CPM_PIN_OUTPUT},
 60	{CPM_PORTD, 7, CPM_PIN_OUTPUT},
 61	{CPM_PORTD, 8, CPM_PIN_OUTPUT},
 62	{CPM_PORTD, 9, CPM_PIN_OUTPUT},
 63	{CPM_PORTD, 10, CPM_PIN_OUTPUT},
 64	{CPM_PORTD, 11, CPM_PIN_OUTPUT},
 65	{CPM_PORTD, 12, CPM_PIN_OUTPUT},
 66	{CPM_PORTD, 13, CPM_PIN_OUTPUT},
 67	{CPM_PORTD, 14, CPM_PIN_OUTPUT},
 68	{CPM_PORTD, 15, CPM_PIN_OUTPUT},
 69
 70	/* I2C */
 71	{CPM_PORTB, 26, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
 72	{CPM_PORTB, 27, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
 73};
 74
 75static void __init init_ioports(void)
 76{
 77	int i;
 78
 79	for (i = 0; i < ARRAY_SIZE(mpc866ads_pins); i++) {
 80		struct cpm_pin *pin = &mpc866ads_pins[i];
 81		cpm1_set_pin(pin->port, pin->pin, pin->flags);
 82	}
 83
 84	cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
 85	cpm1_clk_setup(CPM_CLK_SMC2, CPM_BRG2, CPM_CLK_RTX);
 86	cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK1, CPM_CLK_TX);
 87	cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_RX);
 88
 89	/* Set FEC1 and FEC2 to MII mode */
 90	clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
 91}
 92
 93static void __init mpc86xads_setup_arch(void)
 94{
 95	struct device_node *np;
 96	u32 __iomem *bcsr_io;
 97
 98	cpm_reset();
 99	init_ioports();
100
101	np = of_find_compatible_node(NULL, NULL, "fsl,mpc866ads-bcsr");
102	if (!np) {
103		printk(KERN_CRIT "Could not find fsl,mpc866ads-bcsr node\n");
104		return;
105	}
106
107	bcsr_io = of_iomap(np, 0);
108	of_node_put(np);
109
110	if (bcsr_io == NULL) {
111		printk(KERN_CRIT "Could not remap BCSR\n");
112		return;
113	}
114
115	clrbits32(bcsr_io, BCSR1_RS232EN_1 | BCSR1_RS232EN_2 | BCSR1_ETHEN);
116	iounmap(bcsr_io);
117}
118
119static const struct of_device_id of_bus_ids[] __initconst = {
120	{ .name = "soc", },
121	{ .name = "cpm", },
122	{ .name = "localbus", },
123	{},
124};
125
126static int __init declare_of_platform_devices(void)
127{
128	of_platform_bus_probe(NULL, of_bus_ids, NULL);
129
130	return 0;
131}
132machine_device_initcall(mpc86x_ads, declare_of_platform_devices);
133
134define_machine(mpc86x_ads) {
135	.name			= "MPC86x ADS",
136	.compatible		= "fsl,mpc866ads",
137	.setup_arch		= mpc86xads_setup_arch,
138	.init_IRQ		= mpc8xx_pic_init,
139	.get_irq		= mpc8xx_get_irq,
140	.restart		= mpc8xx_restart,
141	.calibrate_decr		= mpc8xx_calibrate_decr,
142	.set_rtc_time		= mpc8xx_set_rtc_time,
143	.get_rtc_time		= mpc8xx_get_rtc_time,
144	.progress		= udbg_progress,
145};