arm64: tegra: Add support for PCIe endpoint mode in P2972-0000 platform

Add endpoint mode support for PCIe C5 controller in P2972-0000 platform
with information about supplies, PHY, PERST GPIO and GPIO that controls
PCIe reference clock coming from the host system.

Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts b/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts
index f9f874d..e15d1ea 100644 (file)
--- a/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts
+++ b/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts
@@ -199,6 +199,24 @@
                            "p2u-5", "p2u-6", "p2u-7";
        };
 
+       pcie_ep@141a0000 {
+               status = "disabled";
+
+               vddio-pex-ctl-supply = <&vdd_1v8ao>;
+
+               reset-gpios = <&gpio TEGRA194_MAIN_GPIO(GG, 1) GPIO_ACTIVE_LOW>;
+
+               nvidia,refclk-select-gpios = <&gpio_aon TEGRA194_AON_GPIO(AA, 5)
+                                             GPIO_ACTIVE_HIGH>;
+
+               phys = <&p2u_nvhs_0>, <&p2u_nvhs_1>, <&p2u_nvhs_2>,
+                      <&p2u_nvhs_3>, <&p2u_nvhs_4>, <&p2u_nvhs_5>,
+                      <&p2u_nvhs_6>, <&p2u_nvhs_7>;
+
+               phy-names = "p2u-0", "p2u-1", "p2u-2", "p2u-3", "p2u-4",
+                           "p2u-5", "p2u-6", "p2u-7";
+       };
+
        fan: fan {
                compatible = "pwm-fan";
                pwms = <&pwm4 0 45334>;