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