1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2015 Jablotron s.r.o. -- https://www.jablotron.com/
4 * Author: Rostislav Lisovy <lisovy@jablotron.cz>
5 */
6 #include "am33xx.dtsi"
7 #include <dt-bindings/interrupt-controller/irq.h>
8
9 / {
10 model = "Grinn AM335x ChiliSOM";
11 compatible = "grinn,am335x-chilisom", "ti,am33xx";
12
13 cpus {
14 cpu@0 {
15 cpu0-supply = <&dcdc2_reg>;
16 };
17 };
18
19 memory@80000000 {
20 device_type = "memory";
21 reg = <0x80000000 0x20000000>; /* 512 MB */
22 };
23 };
24
25 &am33xx_pinmux {
26 pinctrl-names = "default";
27
28 i2c0_pins: i2c0-pins {
29 pinctrl-single,pins = <
30 AM33XX_PADCONF(AM335X_PIN_I2C0_SDA, PIN_INPUT_PULLUP, MUX_MODE0)
31 AM33XX_PADCONF(AM335X_PIN_I2C0_SCL, PIN_INPUT_PULLUP, MUX_MODE0)
32 >;
33 };
34
35 nandflash_pins: nandflash-pins {
36 pinctrl-single,pins = <
37 AM33XX_PADCONF(AM335X_PIN_GPMC_AD0, PIN_INPUT_PULLDOWN, MUX_MODE0)
38 AM33XX_PADCONF(AM335X_PIN_GPMC_AD1, PIN_INPUT_PULLDOWN, MUX_MODE0)
39 AM33XX_PADCONF(AM335X_PIN_GPMC_AD2, PIN_INPUT_PULLDOWN, MUX_MODE0)
40 AM33XX_PADCONF(AM335X_PIN_GPMC_AD3, PIN_INPUT_PULLDOWN, MUX_MODE0)
41 AM33XX_PADCONF(AM335X_PIN_GPMC_AD4, PIN_INPUT_PULLDOWN, MUX_MODE0)
42 AM33XX_PADCONF(AM335X_PIN_GPMC_AD5, PIN_INPUT_PULLDOWN, MUX_MODE0)
43 AM33XX_PADCONF(AM335X_PIN_GPMC_AD6, PIN_INPUT_PULLDOWN, MUX_MODE0)
44 AM33XX_PADCONF(AM335X_PIN_GPMC_AD7, PIN_INPUT_PULLDOWN, MUX_MODE0)
45
46 AM33XX_PADCONF(AM335X_PIN_GPMC_WAIT0, PIN_INPUT_PULLUP, MUX_MODE0)
47 AM33XX_PADCONF(AM335X_PIN_GPMC_CSN0, PIN_OUTPUT_PULLUP, MUX_MODE0)
48 AM33XX_PADCONF(AM335X_PIN_GPMC_ADVN_ALE, PIN_OUTPUT_PULLUP, MUX_MODE0)
49 AM33XX_PADCONF(AM335X_PIN_GPMC_OEN_REN, PIN_OUTPUT_PULLUP, MUX_MODE0)
50 AM33XX_PADCONF(AM335X_PIN_GPMC_WEN, PIN_OUTPUT_PULLUP, MUX_MODE0)
51 AM33XX_PADCONF(AM335X_PIN_GPMC_BEN0_CLE, PIN_OUTPUT_PULLUP, MUX_MODE0)
52 >;
53 };
54 };
55
56 &i2c0 {
57 pinctrl-names = "default";
58 pinctrl-0 = <&i2c0_pins>;
59
60 status = "okay";
61 clock-frequency = <400000>;
62
63 tps: tps@24 {
64 reg = <0x24>;
65 };
66
67 };
68
69 /include/ "../../tps65217.dtsi"
70
71 &tps {
72 regulators {
73 dcdc1_reg: regulator@0 {
74 regulator-name = "vdds_dpr";
75 regulator-always-on;
76 };
77
78 dcdc2_reg: regulator@1 {
79 /* VDD_MPU voltage limits 0.95V - 1.26V with +/-4% tolerance */
80 regulator-name = "vdd_mpu";
81 regulator-min-microvolt = <925000>;
82 regulator-max-microvolt = <1325000>;
83 regulator-boot-on;
84 regulator-always-on;
85 };
86
87 dcdc3_reg: regulator@2 {
88 /* VDD_CORE voltage limits 0.95V - 1.1V with +/-4% tolerance */
89 regulator-name = "vdd_core";
90 regulator-min-microvolt = <925000>;
91 regulator-max-microvolt = <1150000>;
92 regulator-boot-on;
93 regulator-always-on;
94 };
95
96 ldo1_reg: regulator@3 {
97 regulator-name = "vio,vrtc,vdds";
98 regulator-boot-on;
99 regulator-always-on;
100 };
101
102 ldo2_reg: regulator@4 {
103 regulator-name = "vdd_3v3aux";
104 regulator-boot-on;
105 regulator-always-on;
106 };
107
108 ldo3_reg: regulator@5 {
109 regulator-name = "vdd_1v8";
110 regulator-boot-on;
111 regulator-always-on;
112 };
113
114 ldo4_reg: regulator@6 {
115 regulator-name = "vdd_3v3d";
116 regulator-boot-on;
117 regulator-always-on;
118 };
119 };
120 };
121
122 &rtc {
123 system-power-controller;
124
125 pinctrl-0 = <&ext_wakeup>;
126 pinctrl-names = "default";
127
128 ext_wakeup: ext-wakeup {
129 pins = "ext_wakeup0";
130 input-enable;
131 };
132 };
133
134 /* NAND Flash */
135 &elm {
136 status = "okay";
137 };
138
139 &gpmc {
140 status = "okay";
141 pinctrl-names = "default";
142 pinctrl-0 = <&nandflash_pins>;
143 ranges = <0 0 0x08000000 0x01000000>; /* CS0 0 @addr 0x08000000, size 0x01000000 */
144 nand@0,0 {
145 compatible = "ti,omap2-nand";
146 reg = <0 0 4>; /* CS0, offset 0, IO size 4 */
147 interrupt-parent = <&gpmc>;
148 interrupts = <0 IRQ_TYPE_NONE>, /* fifoevent */
149 <1 IRQ_TYPE_NONE>; /* termcount */
150 rb-gpios = <&gpmc 0 GPIO_ACTIVE_HIGH>; /* gpmc_wait0 */
151 ti,nand-ecc-opt = "bch8";
152 ti,elm-id = <&elm>;
153 nand-bus-width = <8>;
154 gpmc,device-width = <1>;
155 gpmc,sync-clk-ps = <0>;
156 gpmc,cs-on-ns = <0>;
157 gpmc,cs-rd-off-ns = <44>;
158 gpmc,cs-wr-off-ns = <44>;
159 gpmc,adv-on-ns = <6>;
160 gpmc,adv-rd-off-ns = <34>;
161 gpmc,adv-wr-off-ns = <44>;
162 gpmc,we-on-ns = <0>;
163 gpmc,we-off-ns = <40>;
164 gpmc,oe-on-ns = <0>;
165 gpmc,oe-off-ns = <54>;
166 gpmc,access-ns = <64>;
167 gpmc,rd-cycle-ns = <82>;
168 gpmc,wr-cycle-ns = <82>;
169 gpmc,bus-turnaround-ns = <0>;
170 gpmc,cycle2cycle-delay-ns = <0>;
171 gpmc,clk-activation-ns = <0>;
172 gpmc,wr-access-ns = <40>;
173 gpmc,wr-data-mux-bus-ns = <0>;
174 };
175 };
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