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 <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
diff --git a/board/nvidia/p2371-2180/p2371-2180.c b/board/nvidia/p2371-2180/p2371-2180.c
index cf2dd0b..57f577d8 100644
--- a/board/nvidia/p2371-2180/p2371-2180.c
+++ b/board/nvidia/p2371-2180/p2371-2180.c
@@ -6,6 +6,7 @@
*/
#include <common.h>
+#include <netdev.h>
#include <i2c.h>
#include <asm/arch/gpio.h>
#include <asm/arch/pinmux.h>
@@ -49,3 +50,32 @@
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 */