Stephen Warren | 2791a0c | 2012-05-15 06:45:28 +0000 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2010-2012 |
| 3 | * NVIDIA Corporation <www.nvidia.com> |
| 4 | * |
| 5 | * See file CREDITS for list of people who contributed to this |
| 6 | * project. |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License as |
| 10 | * published by the Free Software Foundation; either version 2 of |
| 11 | * the License, or (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 21 | * MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | #include <common.h> |
| 25 | #include <i2c.h> |
| 26 | #include <asm/io.h> |
Allen Martin | 55d98a1 | 2012-08-31 08:30:00 +0000 | [diff] [blame] | 27 | #include <asm/arch/tegra20.h> |
Stephen Warren | 2791a0c | 2012-05-15 06:45:28 +0000 | [diff] [blame] | 28 | #include <asm/arch/clock.h> |
| 29 | #include <asm/arch/funcmux.h> |
| 30 | #include <asm/arch/pinmux.h> |
| 31 | #include <asm/arch/mmc.h> |
| 32 | #include <asm/gpio.h> |
Tom Warren | 8c57e96 | 2012-05-22 11:44:48 +0000 | [diff] [blame] | 33 | #ifdef CONFIG_TEGRA_MMC |
Stephen Warren | 2791a0c | 2012-05-15 06:45:28 +0000 | [diff] [blame] | 34 | #include <mmc.h> |
| 35 | #endif |
| 36 | |
| 37 | /* |
| 38 | * Routine: gpio_config_uart |
| 39 | * Description: Does nothing on Whistler - no UART-related GPIOs. |
| 40 | */ |
| 41 | void gpio_config_uart(void) |
| 42 | { |
| 43 | } |
| 44 | |
| 45 | /* |
| 46 | * Routine: pin_mux_mmc |
| 47 | * Description: setup the pin muxes/tristate values for the SDMMC(s) |
| 48 | */ |
| 49 | static void pin_mux_mmc(void) |
| 50 | { |
| 51 | funcmux_select(PERIPH_ID_SDMMC3, FUNCMUX_SDMMC3_SDB_SLXA_8BIT); |
| 52 | funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATC_ATD_8BIT); |
| 53 | } |
| 54 | |
| 55 | /* this is a weak define that we are overriding */ |
| 56 | int board_mmc_init(bd_t *bd) |
| 57 | { |
| 58 | uchar val; |
| 59 | int ret; |
| 60 | |
| 61 | debug("board_mmc_init called\n"); |
| 62 | |
| 63 | /* Turn on MAX8907B LDO12 to 2.8V for J40 power */ |
| 64 | ret = i2c_set_bus_num(0); |
| 65 | if (ret) |
| 66 | printf("i2c_set_bus_num failed: %d\n", ret); |
| 67 | val = 0x29; |
| 68 | ret = i2c_write(0x3c, 0x46, 1, &val, 1); |
| 69 | if (ret) |
| 70 | printf("i2c_write 0 0x3c 0x46 failed: %d\n", ret); |
| 71 | val = 0x00; |
| 72 | ret = i2c_write(0x3c, 0x45, 1, &val, 1); |
| 73 | if (ret) |
| 74 | printf("i2c_write 0 0x3c 0x45 failed: %d\n", ret); |
| 75 | val = 0x1f; |
| 76 | ret = i2c_write(0x3c, 0x44, 1, &val, 1); |
| 77 | if (ret) |
| 78 | printf("i2c_write 0 0x3c 0x44 failed: %d\n", ret); |
| 79 | |
| 80 | /* Enable muxes, etc. for SDMMC controllers */ |
| 81 | pin_mux_mmc(); |
| 82 | |
| 83 | /* init dev 0 (SDMMC4), (J29 "HSMMC") with 8-bit bus */ |
Tom Warren | 22562a4 | 2012-09-04 17:00:24 -0700 | [diff] [blame] | 84 | tegra_mmc_init(0, 8, -1, -1); |
Stephen Warren | 2791a0c | 2012-05-15 06:45:28 +0000 | [diff] [blame] | 85 | |
| 86 | /* init dev 1 (SDMMC3), (J40 "SDIO3") with 8-bit bus */ |
Tom Warren | 22562a4 | 2012-09-04 17:00:24 -0700 | [diff] [blame] | 87 | tegra_mmc_init(1, 8, -1, -1); |
Stephen Warren | 2791a0c | 2012-05-15 06:45:28 +0000 | [diff] [blame] | 88 | |
| 89 | return 0; |
| 90 | } |
| 91 | |
| 92 | /* this is a weak define that we are overriding */ |
| 93 | void pin_mux_usb(void) |
| 94 | { |
| 95 | uchar val; |
| 96 | int ret; |
| 97 | |
| 98 | /* |
| 99 | * This is a hack. This should be represented in DT using the |
| 100 | * vbus-gpio property. However, U-Boot's DT support doesn't |
| 101 | * support any GPIO controller other than the Tegra's yet. |
| 102 | */ |
| 103 | |
| 104 | /* Turn on TAC6416's GPIO 0+1 for USB1/3's VBUS */ |
| 105 | ret = i2c_set_bus_num(0); |
| 106 | if (ret) |
| 107 | printf("i2c_set_bus_num failed: %d\n", ret); |
| 108 | val = 0x03; |
| 109 | ret = i2c_write(0x20, 2, 1, &val, 1); |
| 110 | if (ret) |
| 111 | printf("i2c_write 0 0x20 2 failed: %d\n", ret); |
| 112 | val = 0xfc; |
| 113 | ret = i2c_write(0x20, 6, 1, &val, 1); |
| 114 | if (ret) |
| 115 | printf("i2c_write 0 0x20 6 failed: %d\n", ret); |
| 116 | } |