81 lines
1.9 KiB
C
81 lines
1.9 KiB
C
/*
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* (C) Copyright 2010-2012
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* NVIDIA Corporation <www.nvidia.com>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dm.h>
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#include <asm/io.h>
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#include <asm/arch/tegra.h>
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#include <asm/arch/clock.h>
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#include <asm/arch/funcmux.h>
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#include <asm/arch/pinmux.h>
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#include <asm/gpio.h>
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#include <i2c.h>
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#ifdef CONFIG_MMC_SDHCI_TEGRA
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/*
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* Routine: pin_mux_mmc
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* Description: setup the pin muxes/tristate values for the SDMMC(s)
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*/
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void pin_mux_mmc(void)
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{
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struct udevice *dev;
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uchar val;
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int ret;
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/* Turn on MAX8907B LDO12 to 2.8V for J40 power */
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ret = i2c_get_chip_for_busnum(0, 0x3c, 1, &dev);
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if (ret) {
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printf("%s: Cannot find MAX8907B I2C chip\n", __func__);
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return;
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}
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val = 0x29;
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ret = dm_i2c_write(dev, 0x46, &val, 1);
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if (ret)
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printf("i2c_write 0 0x3c 0x46 failed: %d\n", ret);
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val = 0x00;
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ret = dm_i2c_write(dev, 0x45, &val, 1);
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if (ret)
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printf("i2c_write 0 0x3c 0x45 failed: %d\n", ret);
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val = 0x1f;
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ret = dm_i2c_write(dev, 0x44, &val, 1);
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if (ret)
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printf("i2c_write 0 0x3c 0x44 failed: %d\n", ret);
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funcmux_select(PERIPH_ID_SDMMC3, FUNCMUX_SDMMC3_SDB_SLXA_8BIT);
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funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATC_ATD_8BIT);
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}
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#endif
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/* this is a weak define that we are overriding */
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void pin_mux_usb(void)
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{
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struct udevice *dev;
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uchar val;
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int ret;
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/*
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* This is a hack. This should be represented in DT using the
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* vbus-gpio property. However, U-Boot's DT support doesn't
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* support any GPIO controller other than the Tegra's yet.
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*/
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/* Turn on TAC6416's GPIO 0+1 for USB1/3's VBUS */
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ret = i2c_get_chip_for_busnum(0, 0x20, 1, &dev);
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if (ret) {
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printf("%s: Cannot find TAC6416 I2C chip\n", __func__);
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return;
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}
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val = 0x03;
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ret = dm_i2c_write(dev, 2, &val, 1);
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if (ret)
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printf("i2c_write 0 0x20 2 failed: %d\n", ret);
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val = 0xfc;
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ret = dm_i2c_write(dev, 6, &val, 1);
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if (ret)
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printf("i2c_write 0 0x20 6 failed: %d\n", ret);
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}
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