LXR linux/arch/powerpc/platforms/8xx/mpc86xads

   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_platform.h>
  19
  20#include <asm/io.h>
  21#include <asm/machdep.h>
  22#include <asm/time.h>
  23#include <asm/8xx_immap.h>
  24#include <asm/cpm1.h>
  25#include <asm/fs_pd.h>
  26#include <asm/udbg.h>
  27
  28#include "mpc86xads.h"
  29#include "mpc8xx.h"
  30
  31struct cpm_pin {
  32        int port, pin, flags;
  33};
  34
  35static struct cpm_pin mpc866ads_pins[] = {
  36        /* SMC1 */
  37        {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
  38        {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
  39
  40        /* SMC2 */
  41        {CPM_PORTB, 21, CPM_PIN_INPUT}, /* RX */
  42        {CPM_PORTB, 20, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
  43
  44        /* SCC1 */
  45        {CPM_PORTA, 6, CPM_PIN_INPUT}, /* CLK1 */
  46        {CPM_PORTA, 7, CPM_PIN_INPUT}, /* CLK2 */
  47        {CPM_PORTA, 14, CPM_PIN_INPUT}, /* TX */
  48        {CPM_PORTA, 15, CPM_PIN_INPUT}, /* RX */
  49        {CPM_PORTB, 19, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */
  50        {CPM_PORTC, 10, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* RENA */
  51        {CPM_PORTC, 11, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CLSN */
  52
  53        /* MII */
  54        {CPM_PORTD, 3, CPM_PIN_OUTPUT},
  55        {CPM_PORTD, 4, CPM_PIN_OUTPUT},
  56        {CPM_PORTD, 5, CPM_PIN_OUTPUT},
  57        {CPM_PORTD, 6, CPM_PIN_OUTPUT},
  58        {CPM_PORTD, 7, CPM_PIN_OUTPUT},
  59        {CPM_PORTD, 8, CPM_PIN_OUTPUT},
  60        {CPM_PORTD, 9, CPM_PIN_OUTPUT},
  61        {CPM_PORTD, 10, CPM_PIN_OUTPUT},
  62        {CPM_PORTD, 11, CPM_PIN_OUTPUT},
  63        {CPM_PORTD, 12, CPM_PIN_OUTPUT},
  64        {CPM_PORTD, 13, CPM_PIN_OUTPUT},
  65        {CPM_PORTD, 14, CPM_PIN_OUTPUT},
  66        {CPM_PORTD, 15, CPM_PIN_OUTPUT},
  67
  68        /* I2C */
  69        {CPM_PORTB, 26, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
  70        {CPM_PORTB, 27, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
  71};
  72
  73static void __init init_ioports(void)
  74{
  75        int i;
  76
  77        for (i = 0; i < ARRAY_SIZE(mpc866ads_pins); i++) {
  78                struct cpm_pin *pin = &mpc866ads_pins[i];
  79                cpm1_set_pin(pin->port, pin->pin, pin->flags);
  80        }
  81
  82        cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
  83        cpm1_clk_setup(CPM_CLK_SMC2, CPM_BRG2, CPM_CLK_RTX);
  84        cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK1, CPM_CLK_TX);
  85        cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_RX);
  86
  87        /* Set FEC1 and FEC2 to MII mode */
  88        clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
  89}
  90
  91static void __init mpc86xads_setup_arch(void)
  92{
  93        struct device_node *np;
  94        u32 __iomem *bcsr_io;
  95
  96        cpm_reset();
  97        init_ioports();
  98
  99        np = of_find_compatible_node(NULL, NULL, "fsl,mpc866ads-bcsr");
 100        if (!np) {
 101                printk(KERN_CRIT "Could not find fsl,mpc866ads-bcsr node\n");
 102                return;
 103        }
 104
 105        bcsr_io = of_iomap(np, 0);
 106        of_node_put(np);
 107
 108        if (bcsr_io == NULL) {
 109                printk(KERN_CRIT "Could not remap BCSR\n");
 110                return;
 111        }
 112
 113        clrbits32(bcsr_io, BCSR1_RS232EN_1 | BCSR1_RS232EN_2 | BCSR1_ETHEN);
 114        iounmap(bcsr_io);
 115}
 116
 117static int __init mpc86xads_probe(void)
 118{
 119        unsigned long root = of_get_flat_dt_root();
 120        return of_flat_dt_is_compatible(root, "fsl,mpc866ads");
 121}
 122
 123static struct of_device_id __initdata of_bus_ids[] = {
 124        { .name = "soc", },
 125        { .name = "cpm", },
 126        { .name = "localbus", },
 127        {},
 128};
 129
 130static int __init declare_of_platform_devices(void)
 131{
 132        of_platform_bus_probe(NULL, of_bus_ids, NULL);
 133
 134        return 0;
 135}
 136machine_device_initcall(mpc86x_ads, declare_of_platform_devices);
 137
 138define_machine(mpc86x_ads) {
 139        .name                   = "MPC86x ADS",
 140        .probe                  = mpc86xads_probe,
 141        .setup_arch             = mpc86xads_setup_arch,
 142        .init_IRQ               = mpc8xx_pics_init,
 143        .get_irq                = mpc8xx_get_irq,
 144        .restart                = mpc8xx_restart,
 145        .calibrate_decr         = mpc8xx_calibrate_decr,
 146        .set_rtc_time           = mpc8xx_set_rtc_time,
 147        .get_rtc_time           = mpc8xx_get_rtc_time,
 148        .progress               = udbg_progress,
 149};
 150