platforms/8xx/adder875.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /* Analogue & Micro Adder MPC875 board support
   3  *
   4  * Author: Scott Wood <scottwood@freescale.com>
   5  *
   6  * Copyright (c) 2007 Freescale Semiconductor, Inc.
   7  */
   8
   9 #include <linux/init.h>
  10 #include <linux/fs_enet_pd.h>
  11 #include <linux/of_platform.h>
  12
  13 #include <asm/time.h>
  14 #include <asm/machdep.h>
  15 #include <asm/cpm1.h>
  16 #include <asm/fs_pd.h>
  17 #include <asm/udbg.h>
  18
  19 #include "mpc8xx.h"
  20 #include "pic.h"
  21
  22 struct cpm_pin {
  23         int port, pin, flags;
  24 };
  25
  26 static __initdata struct cpm_pin adder875_pins[] = {
  27         /* SMC1 */
  28         {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
  29         {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
  30
  31         /* MII1 */
  32         {CPM_PORTA, 0, CPM_PIN_INPUT},
  33         {CPM_PORTA, 1, CPM_PIN_INPUT},
  34         {CPM_PORTA, 2, CPM_PIN_INPUT},
  35         {CPM_PORTA, 3, CPM_PIN_INPUT},
  36         {CPM_PORTA, 4, CPM_PIN_OUTPUT},
  37         {CPM_PORTA, 10, CPM_PIN_OUTPUT},
  38         {CPM_PORTA, 11, CPM_PIN_OUTPUT},
  39         {CPM_PORTB, 19, CPM_PIN_INPUT},
  40         {CPM_PORTB, 31, CPM_PIN_INPUT},
  41         {CPM_PORTC, 12, CPM_PIN_INPUT},
  42         {CPM_PORTC, 13, CPM_PIN_INPUT},
  43         {CPM_PORTE, 30, CPM_PIN_OUTPUT},
  44         {CPM_PORTE, 31, CPM_PIN_OUTPUT},
  45
  46         /* MII2 */
  47         {CPM_PORTE, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
  48         {CPM_PORTE, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
  49         {CPM_PORTE, 16, CPM_PIN_OUTPUT},
  50         {CPM_PORTE, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
  51         {CPM_PORTE, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
  52         {CPM_PORTE, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
  53         {CPM_PORTE, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
  54         {CPM_PORTE, 21, CPM_PIN_OUTPUT},
  55         {CPM_PORTE, 22, CPM_PIN_OUTPUT},
  56         {CPM_PORTE, 23, CPM_PIN_OUTPUT},
  57         {CPM_PORTE, 24, CPM_PIN_OUTPUT},
  58         {CPM_PORTE, 25, CPM_PIN_OUTPUT},
  59         {CPM_PORTE, 26, CPM_PIN_OUTPUT},
  60         {CPM_PORTE, 27, CPM_PIN_OUTPUT},
  61         {CPM_PORTE, 28, CPM_PIN_OUTPUT},
  62         {CPM_PORTE, 29, CPM_PIN_OUTPUT},
  63 };
  64
  65 static void __init init_ioports(void)
  66 {
  67         int i;
  68
  69         for (i = 0; i < ARRAY_SIZE(adder875_pins); i++) {
  70                 const struct cpm_pin *pin = &adder875_pins[i];
  71                 cpm1_set_pin(pin->port, pin->pin, pin->flags);
  72         }
  73
  74         cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
  75
  76         /* Set FEC1 and FEC2 to MII mode */
  77         clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
  78 }
  79
  80 static void __init adder875_setup(void)
  81 {
  82         cpm_reset();
  83         init_ioports();
  84 }
  85
  86 static const struct of_device_id of_bus_ids[] __initconst = {
  87         { .compatible = "simple-bus", },
  88         {},
  89 };
  90
  91 static int __init declare_of_platform_devices(void)
  92 {
  93         of_platform_bus_probe(NULL, of_bus_ids, NULL);
  94         return 0;
  95 }
  96 machine_device_initcall(adder875, declare_of_platform_devices);
  97
  98 define_machine(adder875) {
  99         .name = "Adder MPC875",
 100         .compatible = "analogue-and-micro,adder875",
 101         .setup_arch = adder875_setup,
 102         .init_IRQ = mpc8xx_pic_init,
 103         .get_irq = mpc8xx_get_irq,
 104         .restart = mpc8xx_restart,
 105         .progress = udbg_progress,
 106 };