u-boot/board/nvidia/whistler/whistler.c
Simon Glass b0e6ef4640 dm: i2c: tegra: Convert to driver model
This converts all Tegra boards over to use driver model for I2C. The driver
is adjusted to use driver model and the following obsolete CONFIGs are
removed:

   - CONFIG_SYS_I2C_INIT_BOARD
   - CONFIG_I2C_MULTI_BUS
   - CONFIG_SYS_MAX_I2C_BUS
   - CONFIG_SYS_I2C_SPEED
   - CONFIG_SYS_I2C

This has been tested on:
- trimslice (no I2C)
- beaver
- Jetson-TK1

It has not been tested on Tegra 114 as I don't have that board.

Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>
2014-12-11 13:18:44 -07:00

80 lines
1.9 KiB
C

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