diff options
Diffstat (limited to 'board/nvidia/p2771-0000/p2771-0000.c')
| -rw-r--r-- | board/nvidia/p2771-0000/p2771-0000.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/board/nvidia/p2771-0000/p2771-0000.c b/board/nvidia/p2771-0000/p2771-0000.c index 0c828a2005..529ed9d454 100644 --- a/board/nvidia/p2771-0000/p2771-0000.c +++ b/board/nvidia/p2771-0000/p2771-0000.c @@ -31,3 +31,25 @@ int tegra_board_init(void) return 0; } + +int tegra_pcie_board_init(void) +{ + struct udevice *dev; + uchar val; + int ret; + + /* Turn on MAX77620 LDO7 to 1.05V for PEX power */ + debug("%s: Set LDO7 for PEX power to 1.05V\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 -1; + } + /* 0xC5 for 1.05v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */ + val = 0xC5; + ret = dm_i2c_write(dev, MAX77620_CNFG1_L7_REG, &val, 1); + if (ret) + printf("i2c_write 0 0x3c 0x31 failed: %d\n", ret); + + return 0; +} |