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authorThierry Reding <treding@nvidia.com>2014-12-09 22:25:17 -0700
committerTom Warren <twarren@nvidia.com>2014-12-18 13:19:21 -0700
commit5a2c96a0e5d1dfc13f71b295f07be8a4b7ac8fdb (patch)
treef911a21075ae6af26da9074b205b9048d76936ee /board
parenta1811bc5b999998ef5f42e2312a1140eb7cf3957 (diff)
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ARM: tegra: Enable PCIe on Cardhu
The PCIe bus on Cardhu is routed to the dock connector. An ethernet NIC is available on the dock over the PCIe bus. Enable the PCIe controller and the network device driver so that the device can 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>
Diffstat (limited to 'board')
-rw-r--r--board/nvidia/cardhu/cardhu.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/board/nvidia/cardhu/cardhu.c b/board/nvidia/cardhu/cardhu.c
index 026f45c..95c4ff2 100644
--- a/board/nvidia/cardhu/cardhu.c
+++ b/board/nvidia/cardhu/cardhu.c
@@ -9,8 +9,11 @@
#include <dm.h>
#include <asm/arch/pinmux.h>
#include <asm/arch/gp_padctrl.h>
+#include <asm/arch/gpio.h>
+#include <asm/gpio.h>
#include "pinmux-config-cardhu.h"
#include <i2c.h>
+#include <netdev.h>
#define PMU_I2C_ADDRESS 0x2D
#define MAX_I2C_RETRY 3
@@ -83,3 +86,52 @@ void pin_mux_mmc(void)
board_sdmmc_voltage_init();
}
#endif /* MMC */
+
+#ifdef CONFIG_PCI_TEGRA
+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, &dev);
+ if (err) {
+ debug("failed to find PMU bus\n");
+ return err;
+ }
+
+ /* TPS659110: LDO1_REG = 1.05V, ACTIVE */
+ data[0] = 0x15;
+ addr = 0x30;
+
+ err = i2c_write(dev, addr, data, 1);
+ if (err) {
+ debug("failed to set VDD supply\n");
+ return err;
+ }
+
+ /* GPIO: PEX = 3.3V */
+ err = gpio_request(GPIO_PL7, "PEX");
+ if (err < 0)
+ return err;
+
+ gpio_direction_output(GPIO_PL7, 1);
+
+ /* TPS659110: LDO2_REG = 1.05V, ACTIVE */
+ data[0] = 0x15;
+ addr = 0x31;
+
+ err = i2c_write(dev, addr, data, 1);
+ if (err) {
+ debug("failed to set AVDD supply\n");
+ return err;
+ }
+
+ return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+ return pci_eth_init(bis);
+}
+#endif /* PCI */