board/nvidia/whistler/whistler.c

   1 /*
   2  *  (C) Copyright 2010-2012
   3  *  NVIDIA Corporation <www.nvidia.com>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/io.h>
  10 #include <asm/arch/tegra.h>
  11 #include <asm/arch/clock.h>
  12 #include <asm/arch/funcmux.h>
  13 #include <asm/arch/pinmux.h>
  14 #include <asm/gpio.h>
  15 #include <i2c.h>
  16
  17 #ifdef CONFIG_TEGRA_MMC
  18 /*
  19  * Routine: pin_mux_mmc
  20  * Description: setup the pin muxes/tristate values for the SDMMC(s)
  21  */
  22 void pin_mux_mmc(void)
  23 {
  24         uchar val;
  25         int ret;
  26
  27         /* Turn on MAX8907B LDO12 to 2.8V for J40 power */
  28         ret = i2c_set_bus_num(0);
  29         if (ret)
  30                 printf("i2c_set_bus_num failed: %d\n", ret);
  31         val = 0x29;
  32         ret = i2c_write(0x3c, 0x46, 1, &val, 1);
  33         if (ret)
  34                 printf("i2c_write 0 0x3c 0x46 failed: %d\n", ret);
  35         val = 0x00;
  36         ret = i2c_write(0x3c, 0x45, 1, &val, 1);
  37         if (ret)
  38                 printf("i2c_write 0 0x3c 0x45 failed: %d\n", ret);
  39         val = 0x1f;
  40         ret = i2c_write(0x3c, 0x44, 1, &val, 1);
  41         if (ret)
  42                 printf("i2c_write 0 0x3c 0x44 failed: %d\n", ret);
  43
  44         funcmux_select(PERIPH_ID_SDMMC3, FUNCMUX_SDMMC3_SDB_SLXA_8BIT);
  45         funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATC_ATD_8BIT);
  46 }
  47 #endif
  48
  49 /* this is a weak define that we are overriding */
  50 void pin_mux_usb(void)
  51 {
  52         uchar val;
  53         int ret;
  54
  55         /*
  56          * This is a hack. This should be represented in DT using the
  57          * vbus-gpio property. However, U-Boot's DT support doesn't
  58          * support any GPIO controller other than the Tegra's yet.
  59          */
  60
  61         /* Turn on TAC6416's GPIO 0+1 for USB1/3's VBUS */
  62         ret = i2c_set_bus_num(0);
  63         if (ret)
  64                 printf("i2c_set_bus_num failed: %d\n", ret);
  65         val = 0x03;
  66         ret = i2c_write(0x20, 2, 1, &val, 1);
  67         if (ret)
  68                 printf("i2c_write 0 0x20 2 failed: %d\n", ret);
  69         val = 0xfc;
  70         ret = i2c_write(0x20, 6, 1, &val, 1);
  71         if (ret)
  72                 printf("i2c_write 0 0x20 6 failed: %d\n", ret);
  73 }