/*
* Do I2C/PMU writes to bring up SD card bus power
*
*/
void board_sdmmc_voltage_init(void)
{
struct udevice *dev;
uchar reg, data_buffer[1];
int ret;
int i;
ret = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, &dev);
if (ret) {
debug("%s: Cannot find PMIC I2C chip\n", __func__);
return;
}
/* TPS659110: LDO5_REG = 3.3v, ACTIVE to SDMMC1 */
data_buffer[0] = 0x65;
reg = 0x32;
for (i = 0; i < MAX_I2C_RETRY; ++i) {
if (i2c_write(dev, reg, data_buffer, 1))
udelay(100);
}
/* TPS659110: GPIO7_REG = PDEN, output a 1 to EN_3V3_SYS */
data_buffer[0] = 0x09;
reg = 0x67;
for (i = 0; i < MAX_I2C_RETRY; ++i) {
if (i2c_write(dev, reg, data_buffer, 1))
udelay(100);
}
}
int as3722_init(struct udevice **devp)
{
struct udevice *pmic;
u8 id, revision;
const unsigned int bus = 0;
const unsigned int address = 0x40;
int err;
err = i2c_get_chip_for_busnum(bus, address, &pmic);
if (err)
return err;
err = as3722_read_id(pmic, &id, &revision);
if (err < 0) {
error("failed to read ID: %d", err);
return err;
}
if (id != AS3722_DEVICE_ID) {
error("unknown device");
return -ENOENT;
}
debug("AS3722 revision %#x found on I2C bus %u, address %#x\n",
revision, bus, address);
*devp = pmic;
return 0;
}
static int nand_sw_detect(void)
{
int rc;
uchar data[2];
struct udevice *dev;
rc = i2c_get_chip_for_busnum(NAND_PCF8575_I2C_BUS_NUM,
NAND_PCF8575_ADDR, 0, &dev);
if (rc)
return -1;
rc = dm_i2c_read(dev, 0, (uint8_t *)&data, sizeof(data));
if (rc)
return -1;
/* We are only interested in P10 and P11 on PCF8575 which is equal to
* bits 8 and 9.
*/
data[1] = data[1] & 0x3;
/* Ensure only P11 is set and P10 is cleared. This ensures only
* NAND (P10) is configured and not NOR (P11) which are both low
* true signals. NAND and NOR settings should not be enabled at
* the same time.
*/
if (data[1] == 0x2)
return 0;
return -1;
}
/*
* Do I2C/PMU writes to bring up SD card bus power
*
*/
void board_sdmmc_voltage_init(void)
{
struct udevice *dev;
uchar reg, data_buffer[1];
int ret;
ret = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
if (ret) {
debug("%s: Cannot find PMIC I2C chip\n", __func__);
return;
}
/* TPS65913: LDO9_VOLTAGE = 3.3V */
data_buffer[0] = 0x31;
reg = 0x61;
ret = dm_i2c_write(dev, reg, data_buffer, 1);
if (ret)
printf("%s: PMU i2c_write %02X<-%02X returned %d\n",
__func__, reg, data_buffer[0], ret);
/* TPS65913: LDO9_CTRL = Active */
data_buffer[0] = 0x01;
reg = 0x60;
ret = dm_i2c_write(dev, reg, data_buffer, 1);
if (ret)
printf("%s: PMU i2c_write %02X<-%02X returned %d\n",
__func__, reg, data_buffer[0], ret);
/* TPS65090: FET6_CTRL = enable output auto discharge, enable FET6 */
data_buffer[0] = 0x03;
reg = 0x14;
ret = i2c_get_chip_for_busnum(0, BAT_I2C_ADDRESS, 1, &dev);
if (ret) {
debug("%s: Cannot find charger I2C chip\n", __func__);
return;
}
ret = dm_i2c_write(dev, reg, data_buffer, 1);
if (ret)
printf("%s: BAT i2c_write %02X<-%02X returned %d\n",
__func__, reg, data_buffer[0], ret);
}
void pmu_write(uchar reg, uchar data)
{
struct udevice *dev;
int ret;
ret = i2c_get_chip_for_busnum(4, PMU_I2C_ADDRESS, 1, &dev);
if (ret) {
debug("%s: Cannot find PMIC I2C chip\n", __func__);
return;
}
dm_i2c_write(dev, reg, &data, 1);
}
/*
* Set USB VBUS signals (via I2C IO expander/GPIO) as output and set
* output value as disabled
*
* Set USB Current Limit signals (via I2C IO expander/GPIO) as output
* and set output value as enabled
*/
int board_xhci_config(void)
{
struct udevice *dev;
int ret;
u8 buf[8];
if (of_machine_is_compatible("marvell,armada7040-db")) {
/* Configure IO exander PCA9555: 7bit address 0x21 */
ret = i2c_get_chip_for_busnum(0, I2C_IO_EXP_ADDR, 1, &dev);
if (ret) {
printf("Cannot find PCA9555: %d\n", ret);
return 0;
}
/*
* Read configuration (direction) and set VBUS pin as output
* (reset pin = output)
*/
ret = dm_i2c_read(dev, I2C_IO_CFG_REG_0, buf, 1);
if (ret) {
printf("Failed to read IO expander value via I2C\n");
return -EIO;
}
buf[0] &= ~I2C_IO_REG_VBUS;
buf[0] &= ~I2C_IO_REG_CL;
ret = dm_i2c_write(dev, I2C_IO_CFG_REG_0, buf, 1);
if (ret) {
printf("Failed to set IO expander via I2C\n");
return -EIO;
}
/* Read output value and configure it */
ret = dm_i2c_read(dev, I2C_IO_DATA_OUT_REG_0, buf, 1);
if (ret) {
printf("Failed to read IO expander value via I2C\n");
return -EIO;
}
buf[0] &= ~I2C_IO_REG_VBUS;
buf[0] |= I2C_IO_REG_CL;
ret = dm_i2c_write(dev, I2C_IO_DATA_OUT_REG_0, buf, 1);
if (ret) {
printf("Failed to set IO expander via I2C\n");
return -EIO;
}
mdelay(500); /* required delay to let output value settle */
}
return 0;
}
static int i2c_compat_get_device(uint chip_addr, int alen,
struct udevice **devp)
{
struct dm_i2c_chip *chip;
int ret;
ret = i2c_get_chip_for_busnum(cur_busnum, chip_addr, alen, devp);
if (ret)
return ret;
chip = dev_get_parent_platdata(*devp);
if (chip->offset_len != alen) {
printf("I2C chip %x: requested alen %d does not match chip offset_len %d\n",
chip_addr, alen, chip->offset_len);
return -EADDRNOTAVAIL;
}
return 0;
}
int tegra_pcie_board_init(void)
{
struct udevice *dev;
u8 addr, data[1];
int err;
err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
if (err) {
debug("%s: Cannot find PMIC I2C chip\n", __func__);
return err;
}
/* TPS659110: VDD2_OP_REG = 1.05V */
data[0] = 0x27;
addr = 0x25;
err = dm_i2c_write(dev, addr, data, 1);
if (err) {
debug("failed to set VDD supply\n");
return err;
}
/* TPS659110: VDD2_REG 7.5 mV/us, ACTIVE */
data[0] = 0x0D;
addr = 0x24;
err = dm_i2c_write(dev, addr, data, 1);
if (err) {
debug("failed to enable VDD supply\n");
return err;
}
/* TPS659110: LDO6_REG = 1.1V, ACTIVE */
data[0] = 0x0D;
addr = 0x35;
err = dm_i2c_write(dev, addr, data, 1);
if (err) {
debug("failed to set AVDD supply\n");
return err;
}
return 0;
}
void pin_mux_mmc(void)
{
struct udevice *dev;
uchar val;
int ret;
/* Turn on MAX77620 LDO2 to 3.3V for SD card power */
debug("%s: Set LDO2 for VDDIO_SDMMC_AP power to 3.3V\n", __func__);
ret = i2c_get_chip_for_busnum(0, MAX77620_I2C_ADDR_7BIT, 1, &dev);
if (ret) {
printf("%s: Cannot find MAX77620 I2C chip\n", __func__);
return;
}
/* 0xF2 for 3.3v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */
val = 0xF2;
ret = dm_i2c_write(dev, MAX77620_CNFG1_L2_REG, &val, 1);
if (ret)
printf("i2c_write 0 0x3c 0x27 failed: %d\n", ret);
}
int board_xhci_enable(void)
{
struct udevice *dev;
int ret;
u8 buf[8];
if (of_machine_is_compatible("marvell,armada7040-db")) {
/*
* This function enables all USB ports simultaniously,
* it only needs to get called once
*/
if (usb_enabled)
return 0;
/* Configure IO exander PCA9555: 7bit address 0x21 */
ret = i2c_get_chip_for_busnum(0, I2C_IO_EXP_ADDR, 1, &dev);
if (ret) {
printf("Cannot find PCA9555: %d\n", ret);
return 0;
}
/* Read VBUS output value */
ret = dm_i2c_read(dev, I2C_IO_DATA_OUT_REG_0, buf, 1);
if (ret) {
printf("Failed to read IO expander value via I2C\n");
return -EIO;
}
/* Enable VBUS power: Set output value of VBUS pin as enabled */
buf[0] |= I2C_IO_REG_VBUS;
ret = dm_i2c_write(dev, I2C_IO_DATA_OUT_REG_0, buf, 1);
if (ret) {
printf("Failed to set IO expander via I2C\n");
return -EIO;
}
mdelay(500); /* required delay to let output value settle */
usb_enabled = 1;
}
return 0;
}
int tegra_pcie_board_init(void)
{
struct udevice *dev;
u8 addr, data[1];
int err;
err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
if (err) {
debug("failed to find PMU bus\n");
return err;
}
/* TPS659110: LDO1_REG = 1.05V, ACTIVE */
data[0] = 0x15;
addr = 0x30;
err = dm_i2c_write(dev, addr, data, 1);
if (err) {
debug("failed to set VDD supply\n");
return err;
}
/* GPIO: PEX = 3.3V */
err = gpio_request(TEGRA_GPIO(L, 7), "PEX");
if (err < 0)
return err;
gpio_direction_output(TEGRA_GPIO(L, 7), 1);
/* TPS659110: LDO2_REG = 1.05V, ACTIVE */
data[0] = 0x15;
addr = 0x31;
err = dm_i2c_write(dev, addr, data, 1);
if (err) {
debug("failed to set AVDD supply\n");
return err;
}
return 0;
}
int arch_misc_init(void)
{
/* Disable PMIC sleep mode on low supply voltage */
struct udevice *dev;
u8 addr, data[1];
int err;
err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
if (err) {
debug("%s: Cannot find PMIC I2C chip\n", __func__);
return err;
}
addr = PMU_SUPPLYENE;
err = dm_i2c_read(dev, addr, data, 1);
if (err) {
debug("failed to get PMU_SUPPLYENE\n");
return err;
}
data[0] &= ~PMU_SUPPLYENE_SYSINEN;
data[0] |= PMU_SUPPLYENE_EXITSLREQ;
err = dm_i2c_write(dev, addr, data, 1);
if (err) {
debug("failed to set PMU_SUPPLYENE\n");
return err;
}
/* make sure SODIMM pin 87 nRESET_OUT is released properly */
pinmux_set_func(PMUX_PINGRP_ATA, PMUX_FUNC_GMI);
if (readl(NV_PA_BASE_SRAM + NVBOOTINFOTABLE_BOOTTYPE) ==
NVBOOTTYPE_RECOVERY)
printf("USB recovery mode\n");
return 0;
}
void reset_cpu(ulong addr)
{
struct udevice *dev;
const u8 pmic_bus = 6;
const u8 pmic_addr = 0x5a;
u8 data;
int ret;
ret = i2c_get_chip_for_busnum(pmic_bus, pmic_addr, 1, &dev);
if (ret)
hang();
ret = dm_i2c_read(dev, 0x13, &data, 1);
if (ret)
hang();
data |= BIT(1);
ret = dm_i2c_write(dev, 0x13, &data, 1);
if (ret)
hang();
}
int board_late_init(void)
{
struct udevice *dev;
u8 buf[8];
int ret;
/* Configure SMSC USB2513 USB Hub: 7bit address 0x2c */
ret = i2c_get_chip_for_busnum(0, 0x2c, 1, &dev);
if (ret) {
printf("Cannot find USB2513: %d\n", ret);
return 0;
}
/*
* The first access to the USB Hub fails sometimes, so lets read
* a dummy byte to be sure here
*/
dm_i2c_read(dev, 0x00, buf, 1);
/*
* The SMSC hub is not visible on the I2C bus after the first
* configuration at power-up. The following code deliberately
* does not report upon failure of these I2C write calls.
*/
buf[0] = 0x93;
dm_i2c_write(dev, 0x06, buf, 1);
buf[0] = 0xaa;
dm_i2c_write(dev, 0xf8, buf, 1);
buf[0] = 0x0f;
dm_i2c_write(dev, 0xfa, buf, 1);
buf[0] = 0x01;
dm_i2c_write(dev, 0xff, buf, 1);
return 0;
}
