1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) Siemens AG, 2018-2023
4 *
5 * Authors:
6 * Chao Zeng <chao.zeng@siemens.com>
7 * Jan Kiszka <jan.kiszka@siemens.com>
8 *
9 * AM6548-based (quad-core) IOT2050 M.2 variant (based on Advanced Product
10 * Generation 2), 2 GB RAM, 16 GB eMMC, USB-serial converter on connector X30
11 *
12 * Product homepage:
13 * https://new.siemens.com/global/en/products/automation/pc-based/iot-gateways/simatic-iot2050.html
14 */
15
16 #include "k3-am6548-iot2050-advanced-common.dtsi"
17 #include "k3-am65-iot2050-common-pg2.dtsi"
18 #include "k3-am65-iot2050-arduino-connector.dtsi"
19 #include "k3-am65-iot2050-dp.dtsi"
20
21 / {
22 compatible = "siemens,iot2050-advanced-m2", "ti,am654";
23 model = "SIMATIC IOT2050 Advanced M2";
24 };
25
26 &main_pmx0 {
27 main_bkey_pcie_reset: main-bkey-pcie-reset-default-pins {
28 pinctrl-single,pins = <
29 AM65X_IOPAD(0x01bc, PIN_OUTPUT_PULLUP, 7) /* (AG13) GPIO1_15 */
30 >;
31 };
32
33 main_pmx0_m2_config_pins_default: main-pmx0-m2-config-default-pins {
34 pinctrl-single,pins = <
35 AM65X_IOPAD(0x01c8, PIN_INPUT_PULLUP, 7) /* (AE13) GPIO1_18 */
36 AM65X_IOPAD(0x01cc, PIN_INPUT_PULLUP, 7) /* (AD13) GPIO1_19 */
37 >;
38 };
39
40 main_m2_pcie_mux_control: main-m2-pcie-mux-control-default-pins {
41 pinctrl-single,pins = <
42 AM65X_IOPAD(0x0148, PIN_INPUT_PULLUP, 7) /* (AG22) GPIO0_82 */
43 AM65X_IOPAD(0x0160, PIN_INPUT_PULLUP, 7) /* (AE20) GPIO0_88 */
44 AM65X_IOPAD(0x0164, PIN_INPUT_PULLUP, 7) /* (AF19) GPIO0_89 */
45 >;
46 };
47 };
48
49 &main_pmx1 {
50 main_pmx1_m2_config_pins_default: main-pmx1-m2-config-default-pins {
51 pinctrl-single,pins = <
52 AM65X_IOPAD(0x0018, PIN_INPUT_PULLUP, 7) /* (B22) GPIO1_88 */
53 AM65X_IOPAD(0x001c, PIN_INPUT_PULLUP, 7) /* (C23) GPIO1_89 */
54 >;
55 };
56 };
57
58 &main_gpio0 {
59 pinctrl-names = "default";
60 pinctrl-0 = <&main_m2_pcie_mux_control>;
61 };
62
63 &main_gpio1 {
64 pinctrl-names = "default";
65 pinctrl-0 =
66 <&main_pcie_enable_pins_default>,
67 <&main_pmx0_m2_config_pins_default>,
68 <&main_pmx1_m2_config_pins_default>,
69 <&cp2102n_reset_pin_default>;
70 };
71
72 /*
73 * Base configuration for B-key slot with PCIe x2, E-key with USB 2.0 only.
74 * Firmware switches to other modes via device tree overlays.
75 */
76
77 &serdes0 {
78 assigned-clocks = <&k3_clks 153 4>, <&serdes0 AM654_SERDES_CMU_REFCLK>;
79 assigned-clock-parents = <&k3_clks 153 8>, <&k3_clks 153 4>;
80 };
81
82 &pcie0_rc {
83 pinctrl-names = "default";
84 pinctrl-0 = <&main_bkey_pcie_reset>;
85
86 num-lanes = <2>;
87 phys = <&serdes0 PHY_TYPE_PCIE 1>, <&serdes1 PHY_TYPE_PCIE 1>;
88 phy-names = "pcie-phy0","pcie-phy1";
89 reset-gpios = <&main_gpio1 15 GPIO_ACTIVE_HIGH>;
90 status = "okay";
91 };
92
93 &pcie1_rc {
94 status = "disabled";
95 };
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