tegra234-p3768-overlay.dts

/*
 * SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
 * SPDX-License-Identifier: GPL-2.0-only
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms and conditions of the GNU General Public License,
 * version 2, as published by the Free Software Foundation.
 *
 * This program is distributed in the hope it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

/dts-v1/;
/plugin/;

/ {
	overlay-name = "P3768 Overlay Support";
	compatible = "nvidia,tegra23x";
	nvidia,dtsfilename = __FILE__;
	nvidia,dtbbuildtime = __DATE__, __TIME__;

	/*
	 * If ODMDATA contains hsio-uphy-config-40, then:
	 * 1. Disable PCIE C4
	 * 2. Enable PCIE C4 EP
	 * 3. Reduce PCIE C1 to Gen2
	 */
	fragment@0 {
		target-path = "/";
		board_config {
			odm-data = "hsio-uphy-config-40";
		};
		__overlay__ {
			pcie@14160000 {
				status = "disabled";
			};
			pcie_ep@14160000 {
				status = "okay";
			};
			pcie@14100000 {
				max-link-speed = <2>;
			};
		};
	};

	/*
	 * If ODMDATA contains hsio-uphy-config-41, then:
	 * 1. Disable PCIE C4
	 * 2. Enable PCIE C4 EP
	 */
	fragment@1 {
		target-path = "/";
		board_config {
			odm-data = "hsio-uphy-config-41";
		};
		__overlay__ {
			pcie@14160000 {
				status = "disabled";
			};
			pcie_ep@14160000 {
				status = "okay";
			};
		};
	};
};