board/davinci/da8xxevm/hawkboard.c

   1 /*
   2  * Modified for Hawkboard - Syed Mohammed Khasim <khasim@beagleboard.org>
   3  *
   4  * Copyright (C) 2008 Sekhar Nori, Texas Instruments, Inc.  <nsekhar@ti.com>
   5  * Copyright (C) 2007 Sergey Kubushyn <ksi@koi8.net>
   6  * Copyright (C) 2004 Texas Instruments.
   7  * Copyright (C) 2012 Sughosh Ganu <urwithsughosh@gmail.com>.
   8  *
   9  * ----------------------------------------------------------------------------
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  *  You should have received a copy of the GNU General Public License
  21  *  along with this program; if not, write to the Free Software
  22  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23  * ----------------------------------------------------------------------------
  24  */
  25
  26 #include <common.h>
  27 #include <asm/errno.h>
  28 #include <asm/arch/hardware.h>
  29 #include <asm/io.h>
  30 #include <asm/arch/davinci_misc.h>
  31 #include <asm/arch/pinmux_defs.h>
  32 #include <asm/arch/da8xx-usb.h>
  33 #include <ns16550.h>
  34
  35 DECLARE_GLOBAL_DATA_PTR;
  36
  37 const struct pinmux_resource pinmuxes[] = {
  38         PINMUX_ITEM(emac_pins_mii),
  39         PINMUX_ITEM(emac_pins_mdio),
  40         PINMUX_ITEM(emifa_pins_cs3),
  41         PINMUX_ITEM(emifa_pins_cs4),
  42         PINMUX_ITEM(emifa_pins_nand),
  43         PINMUX_ITEM(uart2_pins_txrx),
  44         PINMUX_ITEM(uart2_pins_rtscts),
  45 };
  46
  47 const int pinmuxes_size = ARRAY_SIZE(pinmuxes);
  48
  49 const struct lpsc_resource lpsc[] = {
  50         { DAVINCI_LPSC_AEMIF }, /* NAND, NOR */
  51         { DAVINCI_LPSC_SPI1 },  /* Serial Flash */
  52         { DAVINCI_LPSC_EMAC },  /* image download */
  53         { DAVINCI_LPSC_UART2 }, /* console */
  54         { DAVINCI_LPSC_GPIO },
  55 };
  56
  57 const int lpsc_size = ARRAY_SIZE(lpsc);
  58
  59 int board_init(void)
  60 {
  61         /* arch number of the board */
  62         gd->bd->bi_arch_number = MACH_TYPE_OMAPL138_HAWKBOARD;
  63
  64         /* address of boot parameters */
  65         gd->bd->bi_boot_params = LINUX_BOOT_PARAM_ADDR;
  66
  67         return 0;
  68 }
  69
  70 int board_early_init_f(void)
  71 {
  72         /*
  73          * Kick Registers need to be set to allow access to Pin Mux registers
  74          */
  75         writel(DV_SYSCFG_KICK0_UNLOCK, &davinci_syscfg_regs->kick0);
  76         writel(DV_SYSCFG_KICK1_UNLOCK, &davinci_syscfg_regs->kick1);
  77
  78         /* set cfgchip3 to select mii */
  79         writel(readl(&davinci_syscfg_regs->cfgchip3) &
  80                ~(1 << 8), &davinci_syscfg_regs->cfgchip3);
  81
  82         return 0;
  83 }
  84
  85 int misc_init_r(void)
  86 {
  87         char buf[32];
  88
  89         printf("ARM Clock : %s MHz\n",
  90                strmhz(buf, clk_get(DAVINCI_ARM_CLKID)));
  91
  92         return 0;
  93 }
  94
  95 int usb_phy_on(void)
  96 {
  97         u32 timeout;
  98         u32 cfgchip2;
  99
 100         cfgchip2 = readl(&davinci_syscfg_regs->cfgchip2);
 101
 102         cfgchip2 &= ~(CFGCHIP2_RESET | CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN |
 103                       CFGCHIP2_OTGMODE | CFGCHIP2_REFFREQ |
 104                       CFGCHIP2_USB1PHYCLKMUX);
 105         cfgchip2 |= CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN | CFGCHIP2_PHY_PLLON |
 106                     CFGCHIP2_REFFREQ_24MHZ | CFGCHIP2_USB2PHYCLKMUX |
 107                     CFGCHIP2_USB1SUSPENDM;
 108
 109         writel(cfgchip2, &davinci_syscfg_regs->cfgchip2);
 110
 111         /* wait until the usb phy pll locks */
 112         timeout = DA8XX_USB_OTG_TIMEOUT;
 113         while (timeout--)
 114                 if (readl(&davinci_syscfg_regs->cfgchip2) & CFGCHIP2_PHYCLKGD)
 115                         return 1;
 116
 117         /* USB phy was not turned on */
 118         return 0;
 119 }
 120
 121 void usb_phy_off(void)
 122 {
 123         u32 cfgchip2;
 124
 125         /*
 126          * Power down the on-chip PHY.
 127          */
 128         cfgchip2 = readl(&davinci_syscfg_regs->cfgchip2);
 129         cfgchip2 &= ~(CFGCHIP2_PHY_PLLON | CFGCHIP2_USB1SUSPENDM);
 130         cfgchip2 |= CFGCHIP2_PHYPWRDN | CFGCHIP2_OTGPWRDN | CFGCHIP2_RESET;
 131         writel(cfgchip2, &davinci_syscfg_regs->cfgchip2);
 132 }