Alban Bedel | cad3966 | 2013-11-14 10:58:30 +0100 | [diff] [blame] | 1 | /* |
| 2 | * (C) Copyright 2013 |
| 3 | * Avionic Design GmbH <www.avionic-design.de> |
| 4 | * |
| 5 | * SPDX-License-Identifier: GPL-2.0+ |
| 6 | */ |
| 7 | |
| 8 | #include <common.h> |
| 9 | #include <asm/arch/pinmux.h> |
| 10 | #include <asm/arch/gp_padctrl.h> |
| 11 | #include <asm/arch/gpio.h> |
| 12 | #include <asm/gpio.h> |
| 13 | #include "pinmux-config-tamonten-ng.h" |
| 14 | #include <i2c.h> |
| 15 | |
| 16 | #define PMU_I2C_ADDRESS 0x2D |
| 17 | |
| 18 | #define PMU_REG_LDO5 0x32 |
| 19 | |
| 20 | #define PMU_REG_LDO_HIGH_POWER 1 |
| 21 | |
| 22 | /* Voltage selection for the LDOs with 100mV resolution */ |
| 23 | #define PMU_REG_LDO_SEL_100(mV) ((((mV - 1000) / 100) + 2) << 2) |
| 24 | |
| 25 | #define PMU_REG_LDO_100(st, mV) (PMU_REG_LDO_##st | PMU_REG_LDO_SEL_100(mV)) |
| 26 | |
| 27 | #define PMU_LDO5(st, mV) PMU_REG_LDO_100(st, mV) |
| 28 | |
| 29 | void pinmux_init(void) |
| 30 | { |
Stephen Warren | f4df605 | 2014-03-21 12:28:56 -0600 | [diff] [blame] | 31 | pinmux_config_pingrp_table(tamonten_ng_pinmux_common, |
| 32 | ARRAY_SIZE(tamonten_ng_pinmux_common)); |
| 33 | pinmux_config_pingrp_table(unused_pins_lowpower, |
| 34 | ARRAY_SIZE(unused_pins_lowpower)); |
Alban Bedel | cad3966 | 2013-11-14 10:58:30 +0100 | [diff] [blame] | 35 | |
| 36 | /* Initialize any non-default pad configs (APB_MISC_GP regs) */ |
Stephen Warren | f4df605 | 2014-03-21 12:28:56 -0600 | [diff] [blame] | 37 | pinmux_config_drvgrp_table(tamonten_ng_padctrl, |
| 38 | ARRAY_SIZE(tamonten_ng_padctrl)); |
Alban Bedel | cad3966 | 2013-11-14 10:58:30 +0100 | [diff] [blame] | 39 | } |
| 40 | |
| 41 | void gpio_early_init(void) |
| 42 | { |
| 43 | /* Turn on the alive signal */ |
| 44 | gpio_request(GPIO_PV2, "ALIVE"); |
| 45 | gpio_direction_output(GPIO_PV2, 1); |
| 46 | |
| 47 | /* Remove the reset on the external periph */ |
| 48 | gpio_request(GPIO_PI4, "nRST_PERIPH"); |
| 49 | gpio_direction_output(GPIO_PI4, 1); |
| 50 | } |
| 51 | |
| 52 | void pmu_write(uchar reg, uchar data) |
| 53 | { |
| 54 | i2c_set_bus_num(4); /* PMU is on bus 4 */ |
| 55 | i2c_write(PMU_I2C_ADDRESS, reg, 1, &data, 1); |
| 56 | } |
| 57 | |
| 58 | /* |
| 59 | * Do I2C/PMU writes to bring up SD card bus power |
| 60 | * |
| 61 | */ |
| 62 | void board_sdmmc_voltage_init(void) |
| 63 | { |
| 64 | /* Enable LDO5 with 3.3v for SDMMC3 */ |
| 65 | pmu_write(PMU_REG_LDO5, PMU_LDO5(HIGH_POWER, 3300)); |
| 66 | |
| 67 | /* Switch the power on */ |
| 68 | gpio_request(GPIO_PJ2, "EN_3V3_EMMC"); |
| 69 | gpio_direction_output(GPIO_PJ2, 1); |
| 70 | } |
| 71 | |
| 72 | /* |
| 73 | * Routine: pin_mux_mmc |
| 74 | * Description: setup the MMC muxes, power rails, etc. |
| 75 | */ |
| 76 | void pin_mux_mmc(void) |
| 77 | { |
| 78 | /* |
| 79 | * NOTE: We don't do mmc-specific pin muxes here. |
| 80 | * They were done globally in pinmux_init(). |
| 81 | */ |
| 82 | |
| 83 | /* Bring up the SDIO1 power rail */ |
| 84 | board_sdmmc_voltage_init(); |
| 85 | } |