board/bct-brettl2/bct-brettl2.c

   1 /*
   2  * U-boot - main board file for BCT brettl2
   3  *
   4  * Copyright (c) 2010 BCT Electronic GmbH
   5  *
   6  * Licensed under the GPL-2 or later.
   7  */
   8
   9 #include <common.h>
  10 #include <config.h>
  11 #include <command.h>
  12 #include <asm/blackfin.h>
  13 #include <asm/portmux.h>
  14 #include <asm/gpio.h>
  15 #include <asm/net.h>
  16 #include <net.h>
  17 #include <netdev.h>
  18 #include <miiphy.h>
  19
  20 #include "../cm-bf537e/gpio_cfi_flash.h"
  21 #include "smsc9303.h"
  22
  23 DECLARE_GLOBAL_DATA_PTR;
  24
  25 int checkboard(void)
  26 {
  27         printf("Board: bct-brettl2 board\n");
  28         printf("       Support: http://www.bct-electronic.com/\n");
  29         return 0;
  30 }
  31
  32 #ifdef CONFIG_BFIN_MAC
  33 static void board_init_enetaddr(uchar *mac_addr)
  34 {
  35         puts("Warning: Generating 'random' MAC address\n");
  36         bfin_gen_rand_mac(mac_addr);
  37         eth_setenv_enetaddr("ethaddr", mac_addr);
  38 }
  39
  40 int board_eth_init(bd_t *bis)
  41 {
  42         int retry = 3;
  43         int ret;
  44
  45         ret = bfin_EMAC_initialize(bis);
  46
  47         uchar enetaddr[6];
  48         if (eth_getenv_enetaddr("ethaddr", enetaddr)) {
  49                 printf("setting MAC %pM\n", enetaddr);
  50         }
  51         puts("       ");
  52
  53         puts("initialize SMSC LAN9303i ethernet switch\n");
  54
  55         while (retry-- > 0) {
  56                 if (init_smsc9303i_mii())
  57                         return ret;
  58         }
  59
  60         return ret;
  61 }
  62 #endif
  63
  64 static void init_tlv320aic31(void)
  65 {
  66         puts("Audio: setup TIMER0 to enable 16.384 MHz clock for tlv320aic31\n");
  67         peripheral_request(P_TMR0, "tlv320aic31 clock");
  68         bfin_write_TIMER0_CONFIG(0x020d);
  69         bfin_write_TIMER0_PERIOD(0x0008);
  70         bfin_write_TIMER0_WIDTH(0x0008/2);
  71         bfin_write_TIMER_ENABLE(bfin_read_TIMER_ENABLE() | 1);
  72         SSYNC();
  73         udelay(10000);
  74
  75         puts("       resetting tlv320aic31\n");
  76
  77         gpio_request(GPIO_PF2, "tlv320aic31");
  78         gpio_direction_output(GPIO_PF2, 0);
  79         udelay(10000);
  80         gpio_direction_output(GPIO_PF2, 1);
  81         udelay(10000);
  82         gpio_free(GPIO_PF2);
  83 }
  84
  85 static void init_mute_pin(void)
  86 {
  87         printf("       unmute class D amplifier\n");
  88
  89         gpio_request(GPIO_PF5, "mute");
  90         gpio_direction_output(GPIO_PF5, 1);
  91         gpio_free(GPIO_PF5);
  92 }
  93
  94 /* sometimes LEDs (speech, status) are still on after reboot, turn 'em off */
  95 static void turn_leds_off(void)
  96 {
  97         printf("       turn LEDs off\n");
  98
  99         gpio_request(GPIO_PF6, "led");
 100         gpio_direction_output(GPIO_PF6, 0);
 101         gpio_free(GPIO_PF6);
 102
 103         gpio_request(GPIO_PF15, "led");
 104         gpio_direction_output(GPIO_PF15, 0);
 105         gpio_free(GPIO_PF15);
 106 }
 107
 108 /* miscellaneous platform dependent initialisations */
 109 int misc_init_r(void)
 110 {
 111 #ifdef CONFIG_BFIN_MAC
 112         uchar enetaddr[6];
 113         if (!eth_getenv_enetaddr("ethaddr", enetaddr))
 114                 board_init_enetaddr(enetaddr);
 115 #endif
 116
 117         gpio_cfi_flash_init();
 118         init_tlv320aic31();
 119         init_mute_pin();
 120         turn_leds_off();
 121
 122         return 0;
 123 }