linux/arch/powerpc/platforms/8xx/adder875.c
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   1/* Analogue & Micro Adder MPC875 board support
   2 *
   3 * Author: Scott Wood <scottwood@freescale.com>
   4 *
   5 * Copyright (c) 2007 Freescale Semiconductor, Inc.
   6 *
   7 * This program is free software; you can redistribute  it and/or modify
   8 * it under the terms of the GNU General Public License, version 2, as
   9 * published by the Free Software Foundation.
  10 */
  11
  12#include <linux/init.h>
  13#include <linux/fs_enet_pd.h>
  14#include <linux/of_platform.h>
  15
  16#include <asm/time.h>
  17#include <asm/machdep.h>
  18#include <asm/cpm1.h>
  19#include <asm/fs_pd.h>
  20#include <asm/udbg.h>
  21#include <asm/prom.h>
  22
  23#include "mpc8xx.h"
  24
  25struct cpm_pin {
  26        int port, pin, flags;
  27};
  28
  29static __initdata struct cpm_pin adder875_pins[] = {
  30        /* SMC1 */
  31        {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
  32        {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
  33
  34        /* MII1 */
  35        {CPM_PORTA, 0, CPM_PIN_INPUT},
  36        {CPM_PORTA, 1, CPM_PIN_INPUT},
  37        {CPM_PORTA, 2, CPM_PIN_INPUT},
  38        {CPM_PORTA, 3, CPM_PIN_INPUT},
  39        {CPM_PORTA, 4, CPM_PIN_OUTPUT},
  40        {CPM_PORTA, 10, CPM_PIN_OUTPUT},
  41        {CPM_PORTA, 11, CPM_PIN_OUTPUT},
  42        {CPM_PORTB, 19, CPM_PIN_INPUT},
  43        {CPM_PORTB, 31, CPM_PIN_INPUT},
  44        {CPM_PORTC, 12, CPM_PIN_INPUT},
  45        {CPM_PORTC, 13, CPM_PIN_INPUT},
  46        {CPM_PORTE, 30, CPM_PIN_OUTPUT},
  47        {CPM_PORTE, 31, CPM_PIN_OUTPUT},
  48
  49        /* MII2 */
  50        {CPM_PORTE, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
  51        {CPM_PORTE, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
  52        {CPM_PORTE, 16, CPM_PIN_OUTPUT},
  53        {CPM_PORTE, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
  54        {CPM_PORTE, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
  55        {CPM_PORTE, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
  56        {CPM_PORTE, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
  57        {CPM_PORTE, 21, CPM_PIN_OUTPUT},
  58        {CPM_PORTE, 22, CPM_PIN_OUTPUT},
  59        {CPM_PORTE, 23, CPM_PIN_OUTPUT},
  60        {CPM_PORTE, 24, CPM_PIN_OUTPUT},
  61        {CPM_PORTE, 25, CPM_PIN_OUTPUT},
  62        {CPM_PORTE, 26, CPM_PIN_OUTPUT},
  63        {CPM_PORTE, 27, CPM_PIN_OUTPUT},
  64        {CPM_PORTE, 28, CPM_PIN_OUTPUT},
  65        {CPM_PORTE, 29, CPM_PIN_OUTPUT},
  66};
  67
  68static void __init init_ioports(void)
  69{
  70        int i;
  71
  72        for (i = 0; i < ARRAY_SIZE(adder875_pins); i++) {
  73                const struct cpm_pin *pin = &adder875_pins[i];
  74                cpm1_set_pin(pin->port, pin->pin, pin->flags);
  75        }
  76
  77        cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
  78
  79        /* Set FEC1 and FEC2 to MII mode */
  80        clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
  81}
  82
  83static void __init adder875_setup(void)
  84{
  85        cpm_reset();
  86        init_ioports();
  87}
  88
  89static int __init adder875_probe(void)
  90{
  91        unsigned long root = of_get_flat_dt_root();
  92        return of_flat_dt_is_compatible(root, "analogue-and-micro,adder875");
  93}
  94
  95static __initdata struct of_device_id of_bus_ids[] = {
  96        { .compatible = "simple-bus", },
  97        {},
  98};
  99
 100static int __init declare_of_platform_devices(void)
 101{
 102        of_platform_bus_probe(NULL, of_bus_ids, NULL);
 103        return 0;
 104}
 105machine_device_initcall(adder875, declare_of_platform_devices);
 106
 107define_machine(adder875) {
 108        .name = "Adder MPC875",
 109        .probe = adder875_probe,
 110        .setup_arch = adder875_setup,
 111        .init_IRQ = mpc8xx_pics_init,
 112        .get_irq = mpc8xx_get_irq,
 113        .restart = mpc8xx_restart,
 114        .calibrate_decr = generic_calibrate_decr,
 115        .set_rtc_time = mpc8xx_set_rtc_time,
 116        .get_rtc_time = mpc8xx_get_rtc_time,
 117        .progress = udbg_progress,
 118};
 119