ARM: tegra: Enable PCIe on Jetson TK1

The Jetson TK1 has an ethernet NIC connected to the PCIe bus and routes
the second root port to a miniPCIe slot. Enable the PCIe controller and
the network driver to allow the device to boot over the network.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>

1 files changed, 52 insertions, 0 deletions

diff --git a/board/nvidia/jetson-tk1/jetson-tk1.c b/board/nvidia/jetson-tk1/jetson-tk1.c
index 5d37718f3b8..daa74a4be02 100644
--- a/board/nvidia/jetson-tk1/jetson-tk1.c
+++ b/board/nvidia/jetson-tk1/jetson-tk1.c
@@ -6,10 +6,16 @@
  */
 
 #include <common.h>
+#include <netdev.h>
+#include <power/as3722.h>
+
 #include <asm/arch/gpio.h>
 #include <asm/arch/pinmux.h>
+
 #include "pinmux-config-jetson-tk1.h"
 
+DECLARE_GLOBAL_DATA_PTR;
+
 /*
  * Routine: pinmux_init
  * Description: Do individual peripheral pinmux configs
@@ -27,3 +33,49 @@ void pinmux_init(void)
 	pinmux_config_drvgrp_table(jetson_tk1_drvgrps,
 				   ARRAY_SIZE(jetson_tk1_drvgrps));
 }
+
+#ifdef CONFIG_PCI_TEGRA
+int tegra_pcie_board_init(void)
+{
+	struct udevice *pmic;
+	int err;
+
+	err = as3722_init(&pmic);
+	if (err) {
+		error("failed to initialize AS3722 PMIC: %d\n", err);
+		return err;
+	}
+
+	err = as3722_sd_enable(pmic, 4);
+	if (err < 0) {
+		error("failed to enable SD4: %d\n", err);
+		return err;
+	}
+
+	err = as3722_sd_set_voltage(pmic, 4, 0x24);
+	if (err < 0) {
+		error("failed to set SD4 voltage: %d\n", err);
+		return err;
+	}
+
+	err = as3722_gpio_configure(pmic, 1, AS3722_GPIO_OUTPUT_VDDH |
+					     AS3722_GPIO_INVERT);
+	if (err < 0) {
+		error("failed to configure GPIO#1 as output: %d\n", err);
+		return err;
+	}
+
+	err = as3722_gpio_direction_output(pmic, 2, 1);
+	if (err < 0) {
+		error("failed to set GPIO#2 high: %d\n", err);
+		return err;
+	}
+
+	return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+	return pci_eth_init(bis);
+}
+#endif /* PCI */