arch/arm/mach-davinci/board-omapl138-hawk.c

   1 /*
   2  * Hawkboard.org based on TI's OMAP-L138 Platform
   3  *
   4  * Initial code: Syed Mohammed Khasim
   5  *
   6  * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com
   7  *
   8  * This file is licensed under the terms of the GNU General Public License
   9  * version 2. This program is licensed "as is" without any warranty of
  10  * any kind, whether express or implied.
  11  */
  12 #include <linux/kernel.h>
  13 #include <linux/init.h>
  14 #include <linux/console.h>
  15 #include <linux/gpio.h>
  16
  17 #include <asm/mach-types.h>
  18 #include <asm/mach/arch.h>
  19
  20 #include <mach/cp_intc.h>
  21 #include <mach/da8xx.h>
  22 #include <mach/mux.h>
  23
  24 #define HAWKBOARD_PHY_ID                "0:07"
  25
  26 static short omapl138_hawk_mii_pins[] __initdata = {
  27         DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
  28         DA850_MII_TXD_2, DA850_MII_TXD_1, DA850_MII_TXD_0, DA850_MII_RXER,
  29         DA850_MII_CRS, DA850_MII_RXCLK, DA850_MII_RXDV, DA850_MII_RXD_3,
  30         DA850_MII_RXD_2, DA850_MII_RXD_1, DA850_MII_RXD_0, DA850_MDIO_CLK,
  31         DA850_MDIO_D,
  32         -1
  33 };
  34
  35 static __init void omapl138_hawk_config_emac(void)
  36 {
  37         void __iomem *cfgchip3 = DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG);
  38         int ret;
  39         u32 val;
  40         struct davinci_soc_info *soc_info = &davinci_soc_info;
  41
  42         val = __raw_readl(cfgchip3);
  43         val &= ~BIT(8);
  44         ret = davinci_cfg_reg_list(omapl138_hawk_mii_pins);
  45         if (ret) {
  46                 pr_warning("%s: cpgmac/mii mux setup failed: %d\n",
  47                         __func__, ret);
  48                 return;
  49         }
  50
  51         /* configure the CFGCHIP3 register for MII */
  52         __raw_writel(val, cfgchip3);
  53         pr_info("EMAC: MII PHY configured\n");
  54
  55         soc_info->emac_pdata->phy_id = HAWKBOARD_PHY_ID;
  56
  57         ret = da8xx_register_emac();
  58         if (ret)
  59                 pr_warning("%s: emac registration failed: %d\n",
  60                         __func__, ret);
  61 }
  62
  63 /*
  64  * The following EDMA channels/slots are not being used by drivers (for
  65  * example: Timer, GPIO, UART events etc) on da850/omap-l138 EVM/Hawkboard,
  66  * hence they are being reserved for codecs on the DSP side.
  67  */
  68 static const s16 da850_dma0_rsv_chans[][2] = {
  69         /* (offset, number) */
  70         { 8,  6},
  71         {24,  4},
  72         {30,  2},
  73         {-1, -1}
  74 };
  75
  76 static const s16 da850_dma0_rsv_slots[][2] = {
  77         /* (offset, number) */
  78         { 8,  6},
  79         {24,  4},
  80         {30, 50},
  81         {-1, -1}
  82 };
  83
  84 static const s16 da850_dma1_rsv_chans[][2] = {
  85         /* (offset, number) */
  86         { 0, 28},
  87         {30,  2},
  88         {-1, -1}
  89 };
  90
  91 static const s16 da850_dma1_rsv_slots[][2] = {
  92         /* (offset, number) */
  93         { 0, 28},
  94         {30, 90},
  95         {-1, -1}
  96 };
  97
  98 static struct edma_rsv_info da850_edma_cc0_rsv = {
  99         .rsv_chans      = da850_dma0_rsv_chans,
 100         .rsv_slots      = da850_dma0_rsv_slots,
 101 };
 102
 103 static struct edma_rsv_info da850_edma_cc1_rsv = {
 104         .rsv_chans      = da850_dma1_rsv_chans,
 105         .rsv_slots      = da850_dma1_rsv_slots,
 106 };
 107
 108 static struct edma_rsv_info *da850_edma_rsv[2] = {
 109         &da850_edma_cc0_rsv,
 110         &da850_edma_cc1_rsv,
 111 };
 112
 113 static struct davinci_uart_config omapl138_hawk_uart_config __initdata = {
 114         .enabled_uarts = 0x7,
 115 };
 116
 117 static __init void omapl138_hawk_init(void)
 118 {
 119         int ret;
 120
 121         davinci_serial_init(&omapl138_hawk_uart_config);
 122
 123         omapl138_hawk_config_emac();
 124
 125         ret = da850_register_edma(da850_edma_rsv);
 126         if (ret)
 127                 pr_warning("%s: EDMA registration failed: %d\n",
 128                         __func__, ret);
 129
 130         ret = da8xx_register_watchdog();
 131         if (ret)
 132                 pr_warning("omapl138_hawk_init: "
 133                         "watchdog registration failed: %d\n",
 134                         ret);
 135 }
 136
 137 #ifdef CONFIG_SERIAL_8250_CONSOLE
 138 static int __init omapl138_hawk_console_init(void)
 139 {
 140         if (!machine_is_omapl138_hawkboard())
 141                 return 0;
 142
 143         return add_preferred_console("ttyS", 2, "115200");
 144 }
 145 console_initcall(omapl138_hawk_console_init);
 146 #endif
 147
 148 static void __init omapl138_hawk_map_io(void)
 149 {
 150         da850_init();
 151 }
 152
 153 MACHINE_START(OMAPL138_HAWKBOARD, "AM18x/OMAP-L138 Hawkboard")
 154         .boot_params    = (DA8XX_DDR_BASE + 0x100),
 155         .map_io         = omapl138_hawk_map_io,
 156         .init_irq       = cp_intc_init,
 157         .timer          = &davinci_timer,
 158         .init_machine   = omapl138_hawk_init,
 159 MACHINE_END