dts/rockchip/rk3588-jaguar-pre-ict-tester.dtso

1 // SPDX-License-Identifier: (GPL-2.0-or-later OR MIT)
5  * Device Tree Overlay for the Pre-ICT tester adapter for the Mezzanine
8  * This adapter has a PCIe Gen2 x1 M.2 M-Key connector and two proprietary
10  * as 2-lane CSI).
19 /dts-v1/;
22 #include <dt-bindings/gpio/gpio.h>
23 #include <dt-bindings/pinctrl/rockchip.h>
26 	pre_ict_tester_vcc_1v2: regulator-pre-ict-tester-vcc-1v2 {
27 		compatible = "regulator-fixed";
28 		regulator-name = "pre_ict_tester_vcc_1v2";
29 		regulator-always-on;
30 		regulator-boot-on;
31 		regulator-min-microvolt = <1200000>;
32 		regulator-max-microvolt = <1200000>;
33 		vin-supply = <&vcc_3v3_s3>;
36 	pre_ict_tester_vcc_2v8: regulator-pre-ict-tester-vcc-2v8 {
37 		compatible = "regulator-fixed";
38 		regulator-name = "pre_ict_tester_vcc_2v8";
39 		regulator-always-on;
40 		regulator-boot-on;
41 		regulator-min-microvolt = <2800000>;
42 		regulator-max-microvolt = <2800000>;
43 		vin-supply = <&vcc_3v3_s3>;
52 	pinctrl-0 = <&pre_ict_pwr2gpio>;
53 	pinctrl-names = "default";
57 	pinctrl-names = "default";
58 	pinctrl-0 = <&pcie2x1l2_perstn_m0>;
59 	reset-gpios = <&gpio3 RK_PD1 GPIO_ACTIVE_HIGH>; /* PCIE20X1_2_PERSTN_M0 */
60 	vpcie3v3-supply = <&vcc_3v3_s3>;
66 		pcie2x1l2_perstn_m0: pcie2x1l2-perstn-m0 {
71 	pre-ict-tester {
72 		pre_ict_pwr2gpio: pre-ict-pwr2gpio-pins {
83 			 * issue. Therefore, let's enforce a pull-up (which is
90 			 * To guarantee that, a pull-down is enforced (which is
105 			 * default bias is pull-down therefore being LOW. So
107 			 * the same value. Make GPIO3_B2 a pull-up so that a
117 			 * GPIO3_C6 default bias is pull-up therefore being HIGH
119 			 *  - GPIO3_C6 is floating (so HIGH) if GPIO3_C6 is not
121 			 *  - GPIO3_C6 is floating (so HIGH) if VCC_1V8_S0_1 is
123 			 *  - GPIO3_C6 is HIGH if everything is proper,
124 			 * Make GPIO3_C6 a pull-down so that a soldering issue
133 			 * To guarantee that, a pull-down is enforced (which is
143 			 * To guarantee that, a pull-down is enforced (which is
153 			 * To guarantee that, a pull-down is enforced (which is
163 			 * To guarantee that, a pull-down is enforced (which is