ARM: tegra: enable PCIe controller on p2771-0000

p2771-0000 has a couple of PCIe ports; one physically x4 desktop PCI
connector (which may run at x2 electrically, depending on the board
version and configuration) and a x1 connection to the M.2 slot (which may
not be active, depending on the board version and configuration). This
change enables those.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

diff --git a/arch/arm/dts/tegra186-p2771-0000-a02.dts b/arch/arm/dts/tegra186-p2771-0000-a02.dts
index 5ed3817..36a3c21 100644 (file)
--- a/arch/arm/dts/tegra186-p2771-0000-a02.dts
+++ b/arch/arm/dts/tegra186-p2771-0000-a02.dts
@@ -10,4 +10,23 @@
                cd-gpios = <&gpio_main TEGRA_MAIN_GPIO(P, 6) GPIO_ACTIVE_LOW>;
                power-gpios = <&gpio_main TEGRA_MAIN_GPIO(P, 5) GPIO_ACTIVE_HIGH>;
        };
+
+       pcie-controller@10003000 {
+               status = "okay";
+
+               pci@1,0 {
+                       status = "okay";
+                       nvidia,num-lanes = <2>;
+               };
+
+               pci@2,0 {
+                       status = "disabled";
+                       nvidia,num-lanes = <1>;
+               };
+
+               pci@3,0 {
+                       status = "okay";
+                       nvidia,num-lanes = <1>;
+               };
+       };
 };

diff --git a/arch/arm/dts/tegra186-p2771-0000-b00.dts b/arch/arm/dts/tegra186-p2771-0000-b00.dts
index 90c99c3..0f1d0e8 100644 (file)
--- a/arch/arm/dts/tegra186-p2771-0000-b00.dts
+++ b/arch/arm/dts/tegra186-p2771-0000-b00.dts
@@ -10,4 +10,23 @@
                cd-gpios = <&gpio_main TEGRA_MAIN_GPIO(P, 5) GPIO_ACTIVE_LOW>;
                power-gpios = <&gpio_main TEGRA_MAIN_GPIO(P, 6) GPIO_ACTIVE_HIGH>;
        };
+
+       pcie-controller@10003000 {
+               status = "okay";
+
+               pci@1,0 {
+                       status = "okay";
+                       nvidia,num-lanes = <4>;
+               };
+
+               pci@2,0 {
+                       status = "disabled";
+                       nvidia,num-lanes = <0>;
+               };
+
+               pci@3,0 {
+                       status = "disabled";
+                       nvidia,num-lanes = <1>;
+               };
+       };
 };

diff --git a/board/nvidia/p2771-0000/p2771-0000.c b/board/nvidia/p2771-0000/p2771-0000.c
index 0c828a2..529ed9d 100644 (file)
--- 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;
+}

diff --git a/configs/p2771-0000-a02_defconfig b/configs/p2771-0000-a02_defconfig
index 404f7ac..5ce369c 100644 (file)
--- a/configs/p2771-0000-a02_defconfig
+++ b/configs/p2771-0000-a02_defconfig
@@ -26,7 +26,12 @@ CONFIG_CMD_EXT4=y
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_CMD_FAT=y
 CONFIG_CMD_FS_GENERIC=y
+CONFIG_RTL8169=y
+CONFIG_E1000=y
+CONFIG_PCI_TEGRA=y
 CONFIG_TEGRA186_BPMP_I2C=y
 CONFIG_SYS_NS16550=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
+CONFIG_POWER_DOMAIN=y
+CONFIG_TEGRA186_POWER_DOMAIN=y

diff --git a/configs/p2771-0000-b00_defconfig b/configs/p2771-0000-b00_defconfig
index ad35c99..27393f3 100644 (file)
--- a/configs/p2771-0000-b00_defconfig
+++ b/configs/p2771-0000-b00_defconfig
@@ -26,7 +26,12 @@ CONFIG_CMD_EXT4=y
 CONFIG_CMD_EXT4_WRITE=y
 CONFIG_CMD_FAT=y
 CONFIG_CMD_FS_GENERIC=y
+CONFIG_RTL8169=y
+CONFIG_E1000=y
+CONFIG_PCI_TEGRA=y
 CONFIG_TEGRA186_BPMP_I2C=y
 CONFIG_SYS_NS16550=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
+CONFIG_POWER_DOMAIN=y
+CONFIG_TEGRA186_POWER_DOMAIN=y

diff --git a/include/configs/p2771-0000.h b/include/configs/p2771-0000.h
index 3ce7208..1f64405 100644 (file)
--- a/include/configs/p2771-0000.h
+++ b/include/configs/p2771-0000.h
@@ -28,6 +28,11 @@
 #define CONFIG_SYS_MMC_ENV_PART                2
 #define CONFIG_ENV_OFFSET              (-CONFIG_ENV_SIZE)
 
+/* PCI host support */
+#define CONFIG_PCI
+#define CONFIG_PCI_PNP
+#define CONFIG_CMD_PCI
+
 #include "tegra-common-post.h"
 
 /* Crystal is 38.4MHz. clk_m runs at half that rate */