arch/arm/mach-davinci/board-dm365-evm.c

   1 /*
   2  * TI DaVinci DM365 EVM board support
   3  *
   4  * Copyright (C) 2009 Texas Instruments Incorporated
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation version 2.
   9  *
  10  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  11  * kind, whether express or implied; without even the implied warranty
  12  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  */
  15 #include <linux/kernel.h>
  16 #include <linux/module.h>
  17 #include <linux/init.h>
  18 #include <linux/dma-mapping.h>
  19 #include <linux/i2c.h>
  20 #include <linux/io.h>
  21 #include <linux/clk.h>
  22 #include <linux/i2c/at24.h>
  23 #include <asm/setup.h>
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/arch.h>
  26 #include <asm/mach/map.h>
  27 #include <mach/mux.h>
  28 #include <mach/hardware.h>
  29 #include <mach/dm365.h>
  30 #include <mach/psc.h>
  31 #include <mach/common.h>
  32 #include <mach/i2c.h>
  33 #include <linux/i2c.h>
  34 #include <mach/serial.h>
  35 #include <mach/common.h>
  36
  37 #define DM365_EVM_PHY_MASK              (0x2)
  38 #define DM365_EVM_MDIO_FREQUENCY        (2200000) /* PHY bus frequency */
  39
  40 static struct at24_platform_data eeprom_info = {
  41         .byte_len       = (256*1024) / 8,
  42         .page_size      = 64,
  43         .flags          = AT24_FLAG_ADDR16,
  44         .setup          = davinci_get_mac_addr,
  45         .context        = (void *)0x7f00,
  46 };
  47
  48 static struct i2c_board_info i2c_info[] = {
  49         {
  50                 I2C_BOARD_INFO("24c256", 0x50),
  51                 .platform_data  = &eeprom_info,
  52         },
  53 };
  54
  55 static struct davinci_i2c_platform_data i2c_pdata = {
  56         .bus_freq       = 400   /* kHz */,
  57         .bus_delay      = 0     /* usec */,
  58 };
  59
  60 static void dm365evm_emac_configure(void)
  61 {
  62         /*
  63          * EMAC pins are multiplexed with GPIO and UART
  64          * Further details are available at the DM365 ARM
  65          * Subsystem Users Guide(sprufg5.pdf) pages 125 - 127
  66          */
  67         davinci_cfg_reg(DM365_EMAC_TX_EN);
  68         davinci_cfg_reg(DM365_EMAC_TX_CLK);
  69         davinci_cfg_reg(DM365_EMAC_COL);
  70         davinci_cfg_reg(DM365_EMAC_TXD3);
  71         davinci_cfg_reg(DM365_EMAC_TXD2);
  72         davinci_cfg_reg(DM365_EMAC_TXD1);
  73         davinci_cfg_reg(DM365_EMAC_TXD0);
  74         davinci_cfg_reg(DM365_EMAC_RXD3);
  75         davinci_cfg_reg(DM365_EMAC_RXD2);
  76         davinci_cfg_reg(DM365_EMAC_RXD1);
  77         davinci_cfg_reg(DM365_EMAC_RXD0);
  78         davinci_cfg_reg(DM365_EMAC_RX_CLK);
  79         davinci_cfg_reg(DM365_EMAC_RX_DV);
  80         davinci_cfg_reg(DM365_EMAC_RX_ER);
  81         davinci_cfg_reg(DM365_EMAC_CRS);
  82         davinci_cfg_reg(DM365_EMAC_MDIO);
  83         davinci_cfg_reg(DM365_EMAC_MDCLK);
  84
  85         /*
  86          * EMAC interrupts are multiplexed with GPIO interrupts
  87          * Details are available at the DM365 ARM
  88          * Subsystem Users Guide(sprufg5.pdf) pages 133 - 134
  89          */
  90         davinci_cfg_reg(DM365_INT_EMAC_RXTHRESH);
  91         davinci_cfg_reg(DM365_INT_EMAC_RXPULSE);
  92         davinci_cfg_reg(DM365_INT_EMAC_TXPULSE);
  93         davinci_cfg_reg(DM365_INT_EMAC_MISCPULSE);
  94 }
  95
  96 static void __init evm_init_i2c(void)
  97 {
  98         davinci_init_i2c(&i2c_pdata);
  99         i2c_register_board_info(1, i2c_info, ARRAY_SIZE(i2c_info));
 100 }
 101
 102 static struct davinci_uart_config uart_config __initdata = {
 103         .enabled_uarts = (1 << 0),
 104 };
 105
 106 static void __init dm365_evm_map_io(void)
 107 {
 108         dm365_init();
 109 }
 110
 111 static __init void dm365_evm_init(void)
 112 {
 113         struct davinci_soc_info *soc_info = &davinci_soc_info;
 114
 115         evm_init_i2c();
 116         davinci_serial_init(&uart_config);
 117
 118         dm365evm_emac_configure();
 119
 120         soc_info->emac_pdata->phy_mask = DM365_EVM_PHY_MASK;
 121         soc_info->emac_pdata->mdio_max_freq = DM365_EVM_MDIO_FREQUENCY;
 122 }
 123
 124 static __init void dm365_evm_irq_init(void)
 125 {
 126         davinci_irq_init();
 127 }
 128
 129 MACHINE_START(DAVINCI_DM365_EVM, "DaVinci DM365 EVM")
 130         .phys_io        = IO_PHYS,
 131         .io_pg_offst    = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
 132         .boot_params    = (0x80000100),
 133         .map_io         = dm365_evm_map_io,
 134         .init_irq       = dm365_evm_irq_init,
 135         .timer          = &davinci_timer,
 136         .init_machine   = dm365_evm_init,
 137 MACHINE_END
 138