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https://github.com/brain-hackers/u-boot-brain
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![Łukasz Majewski](/assets/img/avatar_default.png)
This patch enables LDO4 power line for preparing proper voltages to be measured by ADC converter. This measurement is used for determination of target board HW revision. Test HW: Universal_C210 (Exynos4210) rev. 0.0 Signed-off-by: Lukasz Majewski <l.majewski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
323 lines
7.3 KiB
C
323 lines
7.3 KiB
C
/*
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* Copyright (C) 2010 Samsung Electronics
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* Minkyu Kang <mk7.kang@samsung.com>
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* Kyungmin Park <kyungmin.park@samsung.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 <asm/io.h>
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#include <asm/arch/adc.h>
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#include <asm/arch/gpio.h>
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#include <asm/arch/mmc.h>
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#include <pmic.h>
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#include <usb/s3c_udc.h>
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#include <asm/arch/cpu.h>
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#include <max8998_pmic.h>
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DECLARE_GLOBAL_DATA_PTR;
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struct exynos4_gpio_part1 *gpio1;
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struct exynos4_gpio_part2 *gpio2;
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unsigned int board_rev;
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u32 get_board_rev(void)
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{
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return board_rev;
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}
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static int get_hwrev(void)
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{
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return board_rev & 0xFF;
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}
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static void check_hw_revision(void);
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int board_init(void)
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{
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gpio1 = (struct exynos4_gpio_part1 *) EXYNOS4_GPIO_PART1_BASE;
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gpio2 = (struct exynos4_gpio_part2 *) EXYNOS4_GPIO_PART2_BASE;
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gd->bd->bi_arch_number = MACH_TYPE_UNIVERSAL_C210;
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gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
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#if defined(CONFIG_PMIC)
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pmic_init();
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#endif
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check_hw_revision();
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printf("HW Revision:\t0x%x\n", board_rev);
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return 0;
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}
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int dram_init(void)
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{
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gd->ram_size = get_ram_size((long *)PHYS_SDRAM_1, PHYS_SDRAM_1_SIZE) +
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get_ram_size((long *)PHYS_SDRAM_2, PHYS_SDRAM_2_SIZE);
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return 0;
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}
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void dram_init_banksize(void)
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{
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gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
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gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
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gd->bd->bi_dram[1].start = PHYS_SDRAM_2;
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gd->bd->bi_dram[1].size = PHYS_SDRAM_2_SIZE;
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}
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static unsigned short get_adc_value(int channel)
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{
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struct s5p_adc *adc = (struct s5p_adc *)samsung_get_base_adc();
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unsigned short ret = 0;
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unsigned int reg;
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unsigned int loop = 0;
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writel(channel & 0xF, &adc->adcmux);
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writel((1 << 14) | (49 << 6), &adc->adccon);
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writel(1000 & 0xffff, &adc->adcdly);
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writel(readl(&adc->adccon) | (1 << 16), &adc->adccon); /* 12 bit */
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udelay(10);
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writel(readl(&adc->adccon) | (1 << 0), &adc->adccon); /* Enable */
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udelay(10);
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do {
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udelay(1);
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reg = readl(&adc->adccon);
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} while (!(reg & (1 << 15)) && (loop++ < 1000));
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ret = readl(&adc->adcdat0) & 0xFFF;
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return ret;
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}
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static int adc_power_control(int on)
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{
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int ret;
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struct pmic *p = get_pmic();
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if (pmic_probe(p))
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return -1;
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ret = pmic_set_output(p,
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MAX8998_REG_ONOFF1,
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MAX8998_LDO4, !!on);
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return ret;
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}
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static unsigned int get_hw_revision(void)
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{
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int hwrev, mode0, mode1;
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adc_power_control(1);
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mode0 = get_adc_value(1); /* HWREV_MODE0 */
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mode1 = get_adc_value(2); /* HWREV_MODE1 */
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/*
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* XXX Always set the default hwrev as the latest board
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* ADC = (voltage) / 3.3 * 4096
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*/
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hwrev = 3;
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#define IS_RANGE(x, min, max) ((x) > (min) && (x) < (max))
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if (IS_RANGE(mode0, 80, 200) && IS_RANGE(mode1, 80, 200))
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hwrev = 0x0; /* 0.01V 0.01V */
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if (IS_RANGE(mode0, 750, 1000) && IS_RANGE(mode1, 80, 200))
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hwrev = 0x1; /* 610mV 0.01V */
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if (IS_RANGE(mode0, 1300, 1700) && IS_RANGE(mode1, 80, 200))
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hwrev = 0x2; /* 1.16V 0.01V */
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if (IS_RANGE(mode0, 2000, 2400) && IS_RANGE(mode1, 80, 200))
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hwrev = 0x3; /* 1.79V 0.01V */
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#undef IS_RANGE
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debug("mode0: %d, mode1: %d, hwrev 0x%x\n", mode0, mode1, hwrev);
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adc_power_control(0);
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return hwrev;
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}
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static void check_hw_revision(void)
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{
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int hwrev;
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hwrev = get_hw_revision();
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board_rev |= hwrev;
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}
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#ifdef CONFIG_DISPLAY_BOARDINFO
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int checkboard(void)
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{
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puts("Board:\tUniversal C210\n");
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return 0;
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}
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#endif
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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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int i, err;
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switch (get_hwrev()) {
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case 0:
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/*
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* Set the low to enable LDO_EN
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* But when you use the test board for eMMC booting
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* you should set it HIGH since it removes the inverter
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*/
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/* MASSMEMORY_EN: XMDMDATA_6: GPE3[6] */
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s5p_gpio_direction_output(&gpio1->e3, 6, 0);
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break;
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default:
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/*
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* Default reset state is High and there's no inverter
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* But set it as HIGH to ensure
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*/
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/* MASSMEMORY_EN: XMDMADDR_3: GPE1[3] */
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s5p_gpio_direction_output(&gpio1->e1, 3, 1);
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break;
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}
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/*
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* eMMC GPIO:
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* SDR 8-bit@48MHz at MMC0
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* GPK0[0] SD_0_CLK(2)
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* GPK0[1] SD_0_CMD(2)
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* GPK0[2] SD_0_CDn -> Not used
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* GPK0[3:6] SD_0_DATA[0:3](2)
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* GPK1[3:6] SD_0_DATA[0:3](3)
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*
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* DDR 4-bit@26MHz at MMC4
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* GPK0[0] SD_4_CLK(3)
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* GPK0[1] SD_4_CMD(3)
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* GPK0[2] SD_4_CDn -> Not used
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* GPK0[3:6] SD_4_DATA[0:3](3)
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* GPK1[3:6] SD_4_DATA[4:7](4)
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*/
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for (i = 0; i < 7; i++) {
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if (i == 2)
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continue;
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/* GPK0[0:6] special function 2 */
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s5p_gpio_cfg_pin(&gpio2->k0, i, 0x2);
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/* GPK0[0:6] pull disable */
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s5p_gpio_set_pull(&gpio2->k0, i, GPIO_PULL_NONE);
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/* GPK0[0:6] drv 4x */
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s5p_gpio_set_drv(&gpio2->k0, i, GPIO_DRV_4X);
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}
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for (i = 3; i < 7; i++) {
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/* GPK1[3:6] special function 3 */
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s5p_gpio_cfg_pin(&gpio2->k1, i, 0x3);
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/* GPK1[3:6] pull disable */
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s5p_gpio_set_pull(&gpio2->k1, i, GPIO_PULL_NONE);
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/* GPK1[3:6] drv 4x */
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s5p_gpio_set_drv(&gpio2->k1, i, GPIO_DRV_4X);
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}
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/* T-flash detect */
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s5p_gpio_cfg_pin(&gpio2->x3, 4, 0xf);
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s5p_gpio_set_pull(&gpio2->x3, 4, GPIO_PULL_UP);
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/*
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* MMC device init
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* mmc0 : eMMC (8-bit buswidth)
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* mmc2 : SD card (4-bit buswidth)
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*/
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err = s5p_mmc_init(0, 8);
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/*
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* Check the T-flash detect pin
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* GPX3[4] T-flash detect pin
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*/
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if (!s5p_gpio_get_value(&gpio2->x3, 4)) {
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/*
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* SD card GPIO:
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* GPK2[0] SD_2_CLK(2)
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* GPK2[1] SD_2_CMD(2)
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* GPK2[2] SD_2_CDn -> Not used
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* GPK2[3:6] SD_2_DATA[0:3](2)
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*/
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for (i = 0; i < 7; i++) {
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if (i == 2)
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continue;
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/* GPK2[0:6] special function 2 */
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s5p_gpio_cfg_pin(&gpio2->k2, i, 0x2);
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/* GPK2[0:6] pull disable */
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s5p_gpio_set_pull(&gpio2->k2, i, GPIO_PULL_NONE);
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/* GPK2[0:6] drv 4x */
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s5p_gpio_set_drv(&gpio2->k2, i, GPIO_DRV_4X);
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}
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err = s5p_mmc_init(2, 4);
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}
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return err;
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}
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#endif
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#ifdef CONFIG_USB_GADGET
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static int s5pc210_phy_control(int on)
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{
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int ret = 0;
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struct pmic *p = get_pmic();
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if (pmic_probe(p))
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return -1;
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if (on) {
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ret |= pmic_set_output(p,
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MAX8998_REG_BUCK_ACTIVE_DISCHARGE3,
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MAX8998_SAFEOUT1, LDO_ON);
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ret |= pmic_set_output(p, MAX8998_REG_ONOFF1,
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MAX8998_LDO3, LDO_ON);
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ret |= pmic_set_output(p, MAX8998_REG_ONOFF2,
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MAX8998_LDO8, LDO_ON);
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} else {
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ret |= pmic_set_output(p, MAX8998_REG_ONOFF2,
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MAX8998_LDO8, LDO_OFF);
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ret |= pmic_set_output(p, MAX8998_REG_ONOFF1,
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MAX8998_LDO3, LDO_OFF);
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ret |= pmic_set_output(p,
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MAX8998_REG_BUCK_ACTIVE_DISCHARGE3,
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MAX8998_SAFEOUT1, LDO_OFF);
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}
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if (ret) {
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puts("MAX8998 LDO setting error!\n");
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return -1;
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}
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return 0;
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}
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struct s3c_plat_otg_data s5pc210_otg_data = {
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.phy_control = s5pc210_phy_control,
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.regs_phy = EXYNOS4_USBPHY_BASE,
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.regs_otg = EXYNOS4_USBOTG_BASE,
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.usb_phy_ctrl = EXYNOS4_USBPHY_CONTROL,
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.usb_flags = PHY0_SLEEP,
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};
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#endif
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