From 019bc6259d4f096219cfe1b9e91fe033b62ae645 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Mon, 5 Oct 2015 17:02:40 -0600 Subject: ARM: tegra: enable PCI support of p2371-2180 p2371-2180 has two PCI ports; a regular x4 slot and a x1 M.2 slot. This patch adds the relevant DT to enable the PCI controller and configure the XUSB padctl pin muxing, and code to turn on the PCI power and enable PCI features in U-Boot. I have only tested the x4 slot. Signed-off-by: Stephen Warren Signed-off-by: Tom Warren --- board/nvidia/p2371-2180/p2371-2180.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) (limited to 'board/nvidia') diff --git a/board/nvidia/p2371-2180/p2371-2180.c b/board/nvidia/p2371-2180/p2371-2180.c index cf2dd0b14f..57f577d85d 100644 --- a/board/nvidia/p2371-2180/p2371-2180.c +++ b/board/nvidia/p2371-2180/p2371-2180.c @@ -6,6 +6,7 @@ */ #include +#include #include #include #include @@ -49,3 +50,32 @@ void pinmux_init(void) pinmux_config_drvgrp_table(p2371_2180_drvgrps, ARRAY_SIZE(p2371_2180_drvgrps)); } + +#ifdef CONFIG_PCI_TEGRA +int tegra_pcie_board_init(void) +{ + struct udevice *dev; + uchar val; + int ret; + + /* Turn on MAX77620 LDO1 to 1.05V for PEX power */ + debug("%s: Set LDO1 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; + } + /* 0xCA for 1.05v, enabled: bit7:6 = 11 = enable, bit5:0 = voltage */ + val = 0xCA; + ret = dm_i2c_write(dev, MAX77620_CNFG1_L1_REG, &val, 1); + if (ret) + printf("i2c_write 0 0x3c 0x25 failed: %d\n", ret); + + return 0; +} + +int board_eth_init(bd_t *bis) +{ + return pci_eth_init(bis); +} +#endif /* PCI */ -- cgit v1.2.1