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arm64: tegra: Add NVIDIA Jetson Nano 2GB Developer Kit support

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This devkit is very similar to P3450, except it has less RAM, no display
port, and only 3 USB host ports. Derive from P3450 and disable the
hardware that is unavailable.

GPIO PA6 is used to control the HDMI power rail and needs to be on for
hotplug detect to work. This is mapped to the 3.3V USB hub on P3450.
That USB rail is not used here, so delete the regulator to avoid
conflicts.

Signed-off-by: Aaron Kling <webgeek1234@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Aaron Kling 2025-06-11 13:53:38 -05:00 committed by Thierry Reding
parent 0867951a1c
commit ba97758a63
2 changed files with 61 additions and 0 deletions
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2
arch/arm64/boot/dts/nvidia/Makefile
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@ -3,6 +3,7 @@
# Enables support for device-tree overlays
DTC_FLAGS_tegra210-p2371-2180 := -@
DTC_FLAGS_tegra210-p3450-0000 := -@
DTC_FLAGS_tegra210-p3541-0000 := -@
DTC_FLAGS_tegra186-p2771-0000 := -@
DTC_FLAGS_tegra186-p3509-0000+p3636-0001 := -@
DTC_FLAGS_tegra194-p2972-0000 := -@
@ -19,6 +20,7 @@ dtb-$(CONFIG_ARCH_TEGRA_210_SOC) += tegra210-p2371-0000.dtb
dtb-$(CONFIG_ARCH_TEGRA_210_SOC) += tegra210-p2371-2180.dtb
dtb-$(CONFIG_ARCH_TEGRA_210_SOC) += tegra210-p2571.dtb
dtb-$(CONFIG_ARCH_TEGRA_210_SOC) += tegra210-p3450-0000.dtb
dtb-$(CONFIG_ARCH_TEGRA_210_SOC) += tegra210-p3541-0000.dtb
dtb-$(CONFIG_ARCH_TEGRA_210_SOC) += tegra210-smaug.dtb
dtb-$(CONFIG_ARCH_TEGRA_210_SOC) += tegra210-p2894-0050-a08.dtb
dtb-$(CONFIG_ARCH_TEGRA_186_SOC) += tegra186-p2771-0000.dtb

59
arch/arm64/boot/dts/nvidia/tegra210-p3541-0000.dts Normal file
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@ -0,0 +1,59 @@
// SPDX-License-Identifier: GPL-2.0
/dts-v1/;
#include "tegra210-p3450-0000.dts"
/ {
model = "NVIDIA Jetson Nano 2GB Developer Kit";
compatible = "nvidia,p3541-0000", "nvidia,p3450-0000", "nvidia,tegra210";
memory@80000000 {
reg = <0x0 0x80000000 0x0 0x80000000>;
};
host1x@50000000 {
sor@54540000 {
status = "disabled";
};
dpaux@545c0000 {
status = "disabled";
};
};
padctl@7009f000 {
ports {
usb2-1 {
vbus-supply = <&vdd_hub_5v0>;
};
usb2-2 {
vbus-supply = <&vdd_hub_5v0>;
};
usb3-0 {
/delete-property/ vbus-supply;
};
};
};
regulator-vdd-hdmi-5v0 {
gpio = <&gpio TEGRA_GPIO(A, 6) GPIO_ACTIVE_HIGH>;
enable-active-high;
};
/delete-node/ regulator-vdd-hub-3v3;
vdd_hub_5v0: regulator-vdd-hub-5v0 {
compatible = "regulator-fixed";
regulator-name = "VDD_HUB_5V0";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpio = <&gpio TEGRA_GPIO(I, 2) GPIO_ACTIVE_HIGH>;
enable-active-high;
vin-supply = <&vdd_5v0_sys>;
};
};