linux/arch/powerpc/platforms/8xx/tqm8xx_setup.c
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   1/*
   2 * Platform setup for the MPC8xx based boards from TQM.
   3 *
   4 * Heiko Schocher <hs@denx.de>
   5 * Copyright 2010 DENX Software Engineering GmbH
   6 *
   7 * based on:
   8 * Vitaly Bordug <vbordug@ru.mvista.com>
   9 *
  10 * Copyright 2005 MontaVista Software Inc.
  11 *
  12 * Heavily modified by Scott Wood <scottwood@freescale.com>
  13 * Copyright 2007 Freescale Semiconductor, Inc.
  14 *
  15 * This file is licensed under the terms of the GNU General Public License
  16 * version 2. This program is licensed "as is" without any warranty of any
  17 * kind, whether express or implied.
  18 */
  19
  20#include <linux/init.h>
  21#include <linux/param.h>
  22#include <linux/string.h>
  23#include <linux/ioport.h>
  24#include <linux/device.h>
  25#include <linux/delay.h>
  26
  27#include <linux/fs_enet_pd.h>
  28#include <linux/fs_uart_pd.h>
  29#include <linux/fsl_devices.h>
  30#include <linux/mii.h>
  31#include <linux/of_platform.h>
  32
  33#include <asm/delay.h>
  34#include <asm/io.h>
  35#include <asm/machdep.h>
  36#include <asm/page.h>
  37#include <asm/processor.h>
  38#include <asm/system.h>
  39#include <asm/time.h>
  40#include <asm/mpc8xx.h>
  41#include <asm/8xx_immap.h>
  42#include <asm/cpm1.h>
  43#include <asm/fs_pd.h>
  44#include <asm/udbg.h>
  45
  46#include "mpc8xx.h"
  47
  48struct cpm_pin {
  49        int port, pin, flags;
  50};
  51
  52static struct __initdata cpm_pin tqm8xx_pins[] = {
  53        /* SMC1 */
  54        {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
  55        {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
  56
  57        /* SCC1 */
  58        {CPM_PORTA, 5, CPM_PIN_INPUT}, /* CLK1 */
  59        {CPM_PORTA, 7, CPM_PIN_INPUT}, /* CLK2 */
  60        {CPM_PORTA, 14, CPM_PIN_INPUT}, /* TX */
  61        {CPM_PORTA, 15, CPM_PIN_INPUT}, /* RX */
  62        {CPM_PORTC, 15, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */
  63        {CPM_PORTC, 10, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO},
  64        {CPM_PORTC, 11, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO},
  65};
  66
  67static struct __initdata cpm_pin tqm8xx_fec_pins[] = {
  68        /* MII */
  69        {CPM_PORTD, 3, CPM_PIN_OUTPUT},
  70        {CPM_PORTD, 4, CPM_PIN_OUTPUT},
  71        {CPM_PORTD, 5, CPM_PIN_OUTPUT},
  72        {CPM_PORTD, 6, CPM_PIN_OUTPUT},
  73        {CPM_PORTD, 7, CPM_PIN_OUTPUT},
  74        {CPM_PORTD, 8, CPM_PIN_OUTPUT},
  75        {CPM_PORTD, 9, CPM_PIN_OUTPUT},
  76        {CPM_PORTD, 10, CPM_PIN_OUTPUT},
  77        {CPM_PORTD, 11, CPM_PIN_OUTPUT},
  78        {CPM_PORTD, 12, CPM_PIN_OUTPUT},
  79        {CPM_PORTD, 13, CPM_PIN_OUTPUT},
  80        {CPM_PORTD, 14, CPM_PIN_OUTPUT},
  81        {CPM_PORTD, 15, CPM_PIN_OUTPUT},
  82};
  83
  84static void __init init_pins(int n, struct cpm_pin *pin)
  85{
  86        int i;
  87
  88        for (i = 0; i < n; i++) {
  89                cpm1_set_pin(pin->port, pin->pin, pin->flags);
  90                pin++;
  91        }
  92}
  93
  94static void __init init_ioports(void)
  95{
  96        struct device_node *dnode;
  97        struct property *prop;
  98        int     len;
  99
 100        init_pins(ARRAY_SIZE(tqm8xx_pins), &tqm8xx_pins[0]);
 101
 102        cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
 103
 104        dnode = of_find_node_by_name(NULL, "aliases");
 105        if (dnode == NULL)
 106                return;
 107        prop = of_find_property(dnode, "ethernet1", &len);
 108        if (prop == NULL)
 109                return;
 110
 111        /* init FEC pins */
 112        init_pins(ARRAY_SIZE(tqm8xx_fec_pins), &tqm8xx_fec_pins[0]);
 113}
 114
 115static void __init tqm8xx_setup_arch(void)
 116{
 117        cpm_reset();
 118        init_ioports();
 119}
 120
 121static int __init tqm8xx_probe(void)
 122{
 123        unsigned long node = of_get_flat_dt_root();
 124
 125        return of_flat_dt_is_compatible(node, "tqc,tqm8xx");
 126}
 127
 128static struct of_device_id __initdata of_bus_ids[] = {
 129        { .name = "soc", },
 130        { .name = "cpm", },
 131        { .name = "localbus", },
 132        { .compatible = "simple-bus" },
 133        {},
 134};
 135
 136static int __init declare_of_platform_devices(void)
 137{
 138        of_platform_bus_probe(NULL, of_bus_ids, NULL);
 139
 140        return 0;
 141}
 142machine_device_initcall(tqm8xx, declare_of_platform_devices);
 143
 144define_machine(tqm8xx) {
 145        .name                   = "TQM8xx",
 146        .probe                  = tqm8xx_probe,
 147        .setup_arch             = tqm8xx_setup_arch,
 148        .init_IRQ               = mpc8xx_pics_init,
 149        .get_irq                = mpc8xx_get_irq,
 150        .restart                = mpc8xx_restart,
 151        .calibrate_decr         = mpc8xx_calibrate_decr,
 152        .set_rtc_time           = mpc8xx_set_rtc_time,
 153        .get_rtc_time           = mpc8xx_get_rtc_time,
 154        .progress               = udbg_progress,
 155};
 156