1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * IOT2050 M.2 variant, overlay for B-key USB3.0 + E-key PCIE1_LANE0
4 * Copyright (c) Siemens AG, 2022-2024
5 *
6 * Authors:
7 * Chao Zeng <chao.zeng@siemens.com>
8 * Jan Kiszka <jan.kiszka@siemens.com>
9 */
10
11 /dts-v1/;
12 /plugin/;
13
14 #include <dt-bindings/phy/phy.h>
15 #include <dt-bindings/gpio/gpio.h>
16
17 &serdes0 {
18 assigned-clock-parents = <&k3_clks 153 7>, <&k3_clks 153 4>;
19 };
20
21 &pcie0_rc {
22 status = "disabled";
23 };
24
25 &pcie1_rc {
26 pinctrl-names = "default";
27 pinctrl-0 = <&minipcie_pins_default>;
28
29 num-lanes = <1>;
30 phys = <&serdes1 PHY_TYPE_PCIE 0>;
31 phy-names = "pcie-phy0";
32 reset-gpios = <&wkup_gpio0 27 GPIO_ACTIVE_HIGH>;
33 status = "okay";
34 };
35
36 &dwc3_0 {
37 assigned-clock-parents = <&k3_clks 151 4>, /* set REF_CLK to 20MHz i.e. PER0_PLL/48 */
38 <&k3_clks 151 8>; /* set PIPE3_TXB_CLK to WIZ8B2M4VSB */
39 phys = <&serdes0 PHY_TYPE_USB3 0>;
40 phy-names = "usb3-phy";
41 };
42
43 &usb0 {
44 maximum-speed = "super-speed";
45 snps,dis-u1-entry-quirk;
46 snps,dis-u2-entry-quirk;
47 };
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