arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi

   1 // SPDX-License-Identifier: (GPL-2.0 or MIT)
   2 /*
   3  * Device Tree Source for the Spider CPU board
   4  *
   5  * Copyright (C) 2021 Renesas Electronics Corp.
   6  */
   7
   8 #include "r8a779f0.dtsi"
   9
  10 / {
  11         model = "Renesas Spider CPU board";
  12         compatible = "renesas,spider-cpu", "renesas,r8a779f0";
  13
  14         aliases {
  15                 serial0 = &scif3;
  16                 serial1 = &scif0;
  17         };
  18
  19         chosen {
  20                 bootargs = "ignore_loglevel rw root=/dev/nfs ip=on";
  21                 stdout-path = "serial0:115200n8";
  22         };
  23
  24         memory@48000000 {
  25                 device_type = "memory";
  26                 /* first 128MB is reserved for secure area. */
  27                 reg = <0x0 0x48000000 0x0 0x78000000>;
  28         };
  29
  30         memory@480000000 {
  31                 device_type = "memory";
  32                 reg = <0x4 0x80000000 0x0 0x80000000>;
  33         };
  34
  35         reg_1p8v: regulator-1p8v {
  36                 compatible = "regulator-fixed";
  37                 regulator-name = "fixed-1.8V";
  38                 regulator-min-microvolt = <1800000>;
  39                 regulator-max-microvolt = <1800000>;
  40                 regulator-boot-on;
  41                 regulator-always-on;
  42         };
  43
  44         reg_3p3v: regulator-3p3v {
  45                 compatible = "regulator-fixed";
  46                 regulator-name = "fixed-3.3V";
  47                 regulator-min-microvolt = <3300000>;
  48                 regulator-max-microvolt = <3300000>;
  49                 regulator-boot-on;
  50                 regulator-always-on;
  51         };
  52 };
  53
  54 &extal_clk {
  55         clock-frequency = <20000000>;
  56 };
  57
  58 &extalr_clk {
  59         clock-frequency = <32768>;
  60 };
  61
  62 &i2c4 {
  63         pinctrl-0 = <&i2c4_pins>;
  64         pinctrl-names = "default";
  65
  66         status = "okay";
  67         clock-frequency = <400000>;
  68
  69         eeprom@50 {
  70                 compatible = "rohm,br24g01", "atmel,24c01";
  71                 label = "cpu-board";
  72                 reg = <0x50>;
  73                 pagesize = <8>;
  74         };
  75 };
  76
  77 /*
  78  * This board also has a microSD slot which we will not support upstream
  79  * because we cannot directly switch voltages in software.
  80  */
  81 &mmc0 {
  82         pinctrl-0 = <&mmc_pins>;
  83         pinctrl-1 = <&mmc_pins>;
  84         pinctrl-names = "default", "state_uhs";
  85
  86         vmmc-supply = <&reg_3p3v>;
  87         vqmmc-supply = <&reg_1p8v>;
  88         mmc-hs200-1_8v;
  89         mmc-hs400-1_8v;
  90         bus-width = <8>;
  91         no-sd;
  92         no-sdio;
  93         non-removable;
  94         full-pwr-cycle-in-suspend;
  95         status = "okay";
  96 };
  97
  98 &pfc {
  99         pinctrl-0 = <&scif_clk_pins>;
 100         pinctrl-names = "default";
 101
 102         i2c4_pins: i2c4 {
 103                 groups = "i2c4";
 104                 function = "i2c4";
 105         };
 106
 107         mmc_pins: mmc {
 108                 groups = "mmc_data8", "mmc_ctrl", "mmc_ds";
 109                 function = "mmc";
 110                 power-source = <1800>;
 111         };
 112
 113         scif0_pins: scif0 {
 114                 groups = "scif0_data", "scif0_ctrl";
 115                 function = "scif0";
 116         };
 117
 118         scif3_pins: scif3 {
 119                 groups = "scif3_data", "scif3_ctrl";
 120                 function = "scif3";
 121         };
 122
 123         scif_clk_pins: scif_clk {
 124                 groups = "scif_clk";
 125                 function = "scif_clk";
 126         };
 127 };
 128
 129 &rwdt {
 130         timeout-sec = <60>;
 131         status = "okay";
 132 };
 133
 134 &scif0 {
 135         pinctrl-0 = <&scif0_pins>;
 136         pinctrl-names = "default";
 137
 138         uart-has-rtscts;
 139         status = "okay";
 140 };
 141
 142 &scif3 {
 143         pinctrl-0 = <&scif3_pins>;
 144         pinctrl-names = "default";
 145
 146         uart-has-rtscts;
 147         status = "okay";
 148 };
 149
 150 &scif_clk {
 151         clock-frequency = <24000000>;
 152 };