linux/arch/powerpc/platforms/8xx/mpc86xads_setup.c
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   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/system.h>
  23#include <asm/time.h>
  24#include <asm/8xx_immap.h>
  25#include <asm/cpm1.h>
  26#include <asm/fs_pd.h>
  27#include <asm/udbg.h>
  28
  29#include "mpc86xads.h"
  30#include "mpc8xx.h"
  31
  32struct cpm_pin {
  33        int port, pin, flags;
  34};
  35
  36static struct cpm_pin mpc866ads_pins[] = {
  37        /* SMC1 */
  38        {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
  39        {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
  40
  41        /* SMC2 */
  42        {CPM_PORTB, 21, CPM_PIN_INPUT}, /* RX */
  43        {CPM_PORTB, 20, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
  44
  45        /* SCC1 */
  46        {CPM_PORTA, 6, CPM_PIN_INPUT}, /* CLK1 */
  47        {CPM_PORTA, 7, CPM_PIN_INPUT}, /* CLK2 */
  48        {CPM_PORTA, 14, CPM_PIN_INPUT}, /* TX */
  49        {CPM_PORTA, 15, CPM_PIN_INPUT}, /* RX */
  50        {CPM_PORTB, 19, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TENA */
  51        {CPM_PORTC, 10, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* RENA */
  52        {CPM_PORTC, 11, CPM_PIN_INPUT | CPM_PIN_SECONDARY | CPM_PIN_GPIO}, /* CLSN */
  53
  54        /* MII */
  55        {CPM_PORTD, 3, CPM_PIN_OUTPUT},
  56        {CPM_PORTD, 4, CPM_PIN_OUTPUT},
  57        {CPM_PORTD, 5, CPM_PIN_OUTPUT},
  58        {CPM_PORTD, 6, CPM_PIN_OUTPUT},
  59        {CPM_PORTD, 7, CPM_PIN_OUTPUT},
  60        {CPM_PORTD, 8, CPM_PIN_OUTPUT},
  61        {CPM_PORTD, 9, CPM_PIN_OUTPUT},
  62        {CPM_PORTD, 10, CPM_PIN_OUTPUT},
  63        {CPM_PORTD, 11, CPM_PIN_OUTPUT},
  64        {CPM_PORTD, 12, CPM_PIN_OUTPUT},
  65        {CPM_PORTD, 13, CPM_PIN_OUTPUT},
  66        {CPM_PORTD, 14, CPM_PIN_OUTPUT},
  67        {CPM_PORTD, 15, CPM_PIN_OUTPUT},
  68
  69        /* I2C */
  70        {CPM_PORTB, 26, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
  71        {CPM_PORTB, 27, CPM_PIN_INPUT | CPM_PIN_OPENDRAIN},
  72};
  73
  74static void __init init_ioports(void)
  75{
  76        int i;
  77
  78        for (i = 0; i < ARRAY_SIZE(mpc866ads_pins); i++) {
  79                struct cpm_pin *pin = &mpc866ads_pins[i];
  80                cpm1_set_pin(pin->port, pin->pin, pin->flags);
  81        }
  82
  83        cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
  84        cpm1_clk_setup(CPM_CLK_SMC2, CPM_BRG2, CPM_CLK_RTX);
  85        cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK1, CPM_CLK_TX);
  86        cpm1_clk_setup(CPM_CLK_SCC1, CPM_CLK2, CPM_CLK_RX);
  87
  88        /* Set FEC1 and FEC2 to MII mode */
  89        clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
  90}
  91
  92static void __init mpc86xads_setup_arch(void)
  93{
  94        struct device_node *np;
  95        u32 __iomem *bcsr_io;
  96
  97        cpm_reset();
  98        init_ioports();
  99
 100        np = of_find_compatible_node(NULL, NULL, "fsl,mpc866ads-bcsr");
 101        if (!np) {
 102                printk(KERN_CRIT "Could not find fsl,mpc866ads-bcsr node\n");
 103                return;
 104        }
 105
 106        bcsr_io = of_iomap(np, 0);
 107        of_node_put(np);
 108
 109        if (bcsr_io == NULL) {
 110                printk(KERN_CRIT "Could not remap BCSR\n");
 111                return;
 112        }
 113
 114        clrbits32(bcsr_io, BCSR1_RS232EN_1 | BCSR1_RS232EN_2 | BCSR1_ETHEN);
 115        iounmap(bcsr_io);
 116}
 117
 118static int __init mpc86xads_probe(void)
 119{
 120        unsigned long root = of_get_flat_dt_root();
 121        return of_flat_dt_is_compatible(root, "fsl,mpc866ads");
 122}
 123
 124static struct of_device_id __initdata of_bus_ids[] = {
 125        { .name = "soc", },
 126        { .name = "cpm", },
 127        { .name = "localbus", },
 128        {},
 129};
 130
 131static int __init declare_of_platform_devices(void)
 132{
 133        of_platform_bus_probe(NULL, of_bus_ids, NULL);
 134
 135        return 0;
 136}
 137machine_device_initcall(mpc86x_ads, declare_of_platform_devices);
 138
 139define_machine(mpc86x_ads) {
 140        .name                   = "MPC86x ADS",
 141        .probe                  = mpc86xads_probe,
 142        .setup_arch             = mpc86xads_setup_arch,
 143        .init_IRQ               = mpc8xx_pics_init,
 144        .get_irq                = mpc8xx_get_irq,
 145        .restart                = mpc8xx_restart,
 146        .calibrate_decr         = mpc8xx_calibrate_decr,
 147        .set_rtc_time           = mpc8xx_set_rtc_time,
 148        .get_rtc_time           = mpc8xx_get_rtc_time,
 149        .progress               = udbg_progress,
 150};
 151