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https://github.com/smaeul/u-boot.git
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7cad446b88
Update pandora's GPIO setup code with these changes: - convert to gpiolib - set up dual voltage GPIOs to match supply of 1.8V by clearing VMODE1 - add GPIO_IO_PWRDNZ configuration for DM3730 variation of pandora (required to enable GPIO 126, 127, and 129 I/O cells in DM3730) - add wifi reset pulse as recommended by wifi chip's manufacturer - drop configuration of GPIOs that u-boot doesn't need Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
146 lines
3.7 KiB
C
146 lines
3.7 KiB
C
/*
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* (C) Copyright 2008
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* Grazvydas Ignotas <notasas@gmail.com>
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*
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* Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by
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* Richard Woodruff <r-woodruff2@ti.com>
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* Syed Mohammed Khasim <khasim@ti.com>
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* Sunil Kumar <sunilsaini05@gmail.com>
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* Shashi Ranjan <shashiranjanmca05@gmail.com>
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*
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* (C) Copyright 2004-2008
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* Texas Instruments, <www.ti.com>
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <twl4030.h>
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#include <asm/io.h>
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#include <asm/gpio.h>
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#include <asm/arch/mmc_host_def.h>
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#include <asm/arch/mux.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/sys_proto.h>
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#include <asm/mach-types.h>
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#include "pandora.h"
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DECLARE_GLOBAL_DATA_PTR;
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#define TWL4030_BB_CFG_BBCHEN (1 << 4)
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#define TWL4030_BB_CFG_BBSEL_3200MV (3 << 2)
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#define TWL4030_BB_CFG_BBISEL_500UA 2
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#define CONTROL_WKUP_CTRL 0x48002a5c
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#define GPIO_IO_PWRDNZ (1 << 6)
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#define PBIASLITEVMODE1 (1 << 8)
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/*
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* Routine: board_init
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* Description: Early hardware init.
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*/
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int board_init(void)
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{
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gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
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/* board id for Linux */
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gd->bd->bi_arch_number = MACH_TYPE_OMAP3_PANDORA;
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/* boot param addr */
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gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
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return 0;
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}
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static void set_output_gpio(unsigned int gpio, int value)
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{
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int ret;
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ret = gpio_request(gpio, "");
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if (ret != 0) {
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printf("could not request GPIO %u\n", gpio);
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return;
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}
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ret = gpio_direction_output(gpio, value);
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if (ret != 0)
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printf("could not set GPIO %u to %d\n", gpio, value);
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}
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/*
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* Routine: misc_init_r
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* Description: Configure board specific parts
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*/
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int misc_init_r(void)
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{
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t2_t *t2_base = (t2_t *)T2_BASE;
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u32 pbias_lite;
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twl4030_led_init(TWL4030_LED_LEDEN_LEDBON);
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/* set up dual-voltage GPIOs to 1.8V */
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pbias_lite = readl(&t2_base->pbias_lite);
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pbias_lite &= ~PBIASLITEVMODE1;
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pbias_lite |= PBIASLITEPWRDNZ1;
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writel(pbias_lite, &t2_base->pbias_lite);
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if (get_cpu_family() == CPU_OMAP36XX)
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writel(readl(CONTROL_WKUP_CTRL) | GPIO_IO_PWRDNZ,
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CONTROL_WKUP_CTRL);
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/* make sure audio and BT chips are in powerdown state */
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set_output_gpio(14, 0);
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set_output_gpio(15, 0);
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set_output_gpio(118, 0);
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/* enable USB supply */
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set_output_gpio(164, 1);
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/* wifi needs a short pulse to enter powersave state */
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set_output_gpio(23, 1);
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udelay(5000);
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gpio_direction_output(23, 0);
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/* Enable battery backup capacitor (3.2V, 0.5mA charge current) */
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twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
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TWL4030_BB_CFG_BBCHEN | TWL4030_BB_CFG_BBSEL_3200MV |
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TWL4030_BB_CFG_BBISEL_500UA, TWL4030_PM_RECEIVER_BB_CFG);
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dieid_num_r();
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return 0;
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}
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/*
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* Routine: set_muxconf_regs
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* Description: Setting up the configuration Mux registers specific to the
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* hardware. Many pins need to be moved from protect to primary
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* mode.
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*/
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void set_muxconf_regs(void)
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{
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MUX_PANDORA();
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if (get_cpu_family() == CPU_OMAP36XX) {
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MUX_PANDORA_3730();
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}
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}
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#ifdef CONFIG_GENERIC_MMC
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int board_mmc_init(bd_t *bis)
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{
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omap_mmc_init(0, 0, 0);
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return 0;
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}
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#endif
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