1 // SPDX-License-Identifier: GPL-2.0-only OR MIT
2 /**
3 * DT overlay for SERDES personality card: 2lane PCIe + USB2.0 Host on AM654 EVM
4 *
5 * Copyright (C) 2018-2024 Texas Instruments Incorporated - https://www.ti.com/
6 */
7
8 /dts-v1/;
9 /plugin/;
10 #include <dt-bindings/gpio/gpio.h>
11 #include <dt-bindings/phy/phy.h>
12 #include <dt-bindings/phy/phy-am654-serdes.h>
13 #include "k3-pinctrl.h"
14
15 &serdes0 {
16 assigned-clocks = <&k3_clks 153 4>,
17 <&serdes0 AM654_SERDES_CMU_REFCLK>,
18 <&serdes0 AM654_SERDES_RO_REFCLK>;
19 assigned-clock-parents = <&k3_clks 153 8>,
20 <&k3_clks 153 4>,
21 <&k3_clks 153 4>;
22 status = "okay";
23 };
24
25 &serdes1 {
26 assigned-clocks = <&serdes1 AM654_SERDES_CMU_REFCLK>;
27 assigned-clock-parents = <&serdes0 AM654_SERDES_RO_REFCLK>;
28 status = "okay";
29 };
30
31 &pcie0_rc {
32 num-lanes = <2>;
33 phys = <&serdes0 PHY_TYPE_PCIE 1>, <&serdes1 PHY_TYPE_PCIE 1>;
34 phy-names = "pcie-phy0", "pcie-phy1";
35 reset-gpios = <&pca9555 5 GPIO_ACTIVE_HIGH>;
36 status = "okay";
37 };
38
39 &main_pmx0 {
40 usb0_pins_default: usb0-default-pins {
41 pinctrl-single,pins = <
42 AM65X_IOPAD(0x02bc, PIN_OUTPUT, 0) /* (AD9) USB0_DRVVBUS */
43 >;
44 };
45 };
46
47 &dwc3_0 {
48 status = "okay";
49 };
50
51 &usb0_phy {
52 status = "okay";
53 };
54
55 &usb0 {
56 pinctrl-names = "default";
57 pinctrl-0 = <&usb0_pins_default>;
58 dr_mode = "host";
59 };
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