arch/arm/boot/dts/am335x-chilisom.dtsi

   1 /*
   2  * Copyright (C) 2015 Jablotron s.r.o. -- http://www.jablotron.com/
   3  * Author: Rostislav Lisovy <lisovy@jablotron.cz>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  */
   9 #include "am33xx.dtsi"
  10 #include <dt-bindings/interrupt-controller/irq.h>
  11
  12 / {
  13         model = "Grinn AM335x ChiliSOM";
  14         compatible = "grinn,am335x-chilisom", "ti,am33xx";
  15
  16         cpus {
  17                 cpu@0 {
  18                         cpu0-supply = <&dcdc2_reg>;
  19                 };
  20         };
  21
  22         memory@80000000 {
  23                 device_type = "memory";
  24                 reg = <0x80000000 0x20000000>; /* 512 MB */
  25         };
  26 };
  27
  28 &am33xx_pinmux {
  29         pinctrl-names = "default";
  30
  31         i2c0_pins: pinmux_i2c0_pins {
  32                 pinctrl-single,pins = <
  33                         AM33XX_IOPAD(0x988, PIN_INPUT_PULLUP | MUX_MODE0)       /* i2c0_sda.i2c0_sda */
  34                         AM33XX_IOPAD(0x98c, PIN_INPUT_PULLUP | MUX_MODE0)       /* i2c0_scl.i2c0_scl */
  35                 >;
  36         };
  37
  38         nandflash_pins: nandflash_pins {
  39                 pinctrl-single,pins = <
  40                         AM33XX_IOPAD(0x800, PIN_INPUT_PULLDOWN | MUX_MODE0)     /* gpmc_ad0.gpmc_ad0 */
  41                         AM33XX_IOPAD(0x804, PIN_INPUT_PULLDOWN | MUX_MODE0)     /* gpmc_ad1.gpmc_ad1 */
  42                         AM33XX_IOPAD(0x808, PIN_INPUT_PULLDOWN | MUX_MODE0)     /* gpmc_ad2.gpmc_ad2 */
  43                         AM33XX_IOPAD(0x80c, PIN_INPUT_PULLDOWN | MUX_MODE0)     /* gpmc_ad3.gpmc_ad3 */
  44                         AM33XX_IOPAD(0x810, PIN_INPUT_PULLDOWN | MUX_MODE0)     /* gpmc_ad4.gpmc_ad4 */
  45                         AM33XX_IOPAD(0x814, PIN_INPUT_PULLDOWN | MUX_MODE0)     /* gpmc_ad5.gpmc_ad5 */
  46                         AM33XX_IOPAD(0x818, PIN_INPUT_PULLDOWN | MUX_MODE0)     /* gpmc_ad6.gpmc_ad6 */
  47                         AM33XX_IOPAD(0x81c, PIN_INPUT_PULLDOWN | MUX_MODE0)     /* gpmc_ad7.gpmc_ad7 */
  48
  49                         AM33XX_IOPAD(0x870, PIN_INPUT_PULLUP | MUX_MODE0)       /* gpmc_wait0.gpmc_wait0 */
  50                         AM33XX_IOPAD(0x87c, PIN_OUTPUT_PULLUP | MUX_MODE0)      /* gpmc_csn0.gpmc_csn0 */
  51                         AM33XX_IOPAD(0x890, PIN_OUTPUT_PULLUP | MUX_MODE0)      /* gpmc_advn_ale.gpmc_advn_ale */
  52                         AM33XX_IOPAD(0x894, PIN_OUTPUT_PULLUP | MUX_MODE0)      /* gpmc_oen_ren.gpmc_oen_ren */
  53                         AM33XX_IOPAD(0x898, PIN_OUTPUT_PULLUP | MUX_MODE0)      /* gpmc_wen.gpmc_wen */
  54                         AM33XX_IOPAD(0x89c, PIN_OUTPUT_PULLUP | MUX_MODE0)      /* gpmc_be0n_cle.gpmc_be0n_cle */
  55                 >;
  56         };
  57 };
  58
  59 &i2c0 {
  60         pinctrl-names = "default";
  61         pinctrl-0 = <&i2c0_pins>;
  62
  63         status = "okay";
  64         clock-frequency = <400000>;
  65
  66         tps: tps@24 {
  67                 reg = <0x24>;
  68         };
  69
  70 };
  71
  72 /include/ "tps65217.dtsi"
  73
  74 &tps {
  75         regulators {
  76                 dcdc1_reg: regulator@0 {
  77                         regulator-name = "vdds_dpr";
  78                         regulator-always-on;
  79                 };
  80
  81                 dcdc2_reg: regulator@1 {
  82                         /* VDD_MPU voltage limits 0.95V - 1.26V with +/-4% tolerance */
  83                         regulator-name = "vdd_mpu";
  84                         regulator-min-microvolt = <925000>;
  85                         regulator-max-microvolt = <1325000>;
  86                         regulator-boot-on;
  87                         regulator-always-on;
  88                 };
  89
  90                 dcdc3_reg: regulator@2 {
  91                         /* VDD_CORE voltage limits 0.95V - 1.1V with +/-4% tolerance */
  92                         regulator-name = "vdd_core";
  93                         regulator-min-microvolt = <925000>;
  94                         regulator-max-microvolt = <1150000>;
  95                         regulator-boot-on;
  96                         regulator-always-on;
  97                 };
  98
  99                 ldo1_reg: regulator@3 {
 100                         regulator-name = "vio,vrtc,vdds";
 101                         regulator-boot-on;
 102                         regulator-always-on;
 103                 };
 104
 105                 ldo2_reg: regulator@4 {
 106                         regulator-name = "vdd_3v3aux";
 107                         regulator-boot-on;
 108                         regulator-always-on;
 109                 };
 110
 111                 ldo3_reg: regulator@5 {
 112                         regulator-name = "vdd_1v8";
 113                         regulator-boot-on;
 114                         regulator-always-on;
 115                 };
 116
 117                 ldo4_reg: regulator@6 {
 118                         regulator-name = "vdd_3v3d";
 119                         regulator-boot-on;
 120                         regulator-always-on;
 121                 };
 122         };
 123 };
 124
 125 &rtc {
 126         system-power-controller;
 127 };
 128
 129 /* NAND Flash */
 130 &elm {
 131         status = "okay";
 132 };
 133
 134 &gpmc {
 135         status = "okay";
 136         pinctrl-names = "default";
 137         pinctrl-0 = <&nandflash_pins>;
 138         ranges = <0 0 0x08000000 0x01000000>; /* CS0 0 @addr 0x08000000, size 0x01000000 */
 139         nand@0,0 {
 140                 compatible = "ti,omap2-nand";
 141                 reg = <0 0 4>;  /* CS0, offset 0, IO size 4 */
 142                 interrupt-parent = <&gpmc>;
 143                 interrupts = <0 IRQ_TYPE_NONE>, /* fifoevent */
 144                              <1 IRQ_TYPE_NONE>; /* termcount */
 145                 rb-gpios = <&gpmc 0 GPIO_ACTIVE_HIGH>; /* gpmc_wait0 */
 146                 ti,nand-ecc-opt = "bch8";
 147                 ti,elm-id = <&elm>;
 148                 nand-bus-width = <8>;
 149                 gpmc,device-width = <1>;
 150                 gpmc,sync-clk-ps = <0>;
 151                 gpmc,cs-on-ns = <0>;
 152                 gpmc,cs-rd-off-ns = <44>;
 153                 gpmc,cs-wr-off-ns = <44>;
 154                 gpmc,adv-on-ns = <6>;
 155                 gpmc,adv-rd-off-ns = <34>;
 156                 gpmc,adv-wr-off-ns = <44>;
 157                 gpmc,we-on-ns = <0>;
 158                 gpmc,we-off-ns = <40>;
 159                 gpmc,oe-on-ns = <0>;
 160                 gpmc,oe-off-ns = <54>;
 161                 gpmc,access-ns = <64>;
 162                 gpmc,rd-cycle-ns = <82>;
 163                 gpmc,wr-cycle-ns = <82>;
 164                 gpmc,bus-turnaround-ns = <0>;
 165                 gpmc,cycle2cycle-delay-ns = <0>;
 166                 gpmc,clk-activation-ns = <0>;
 167                 gpmc,wr-access-ns = <40>;
 168                 gpmc,wr-data-mux-bus-ns = <0>;
 169         };
 170 };