target/linux/brcm2708/patches-4.19/950-0671-arm-dts-First-draft-of-upstream-Pi4-DTS.patch

   1 From 575145094f904ca3c50e07f69a4ffaea902eadd7 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Tue, 11 Jun 2019 18:08:05 +0100
   4 Subject: [PATCH 671/703] arm: dts: First draft of upstream Pi4 DTS
   5
   6 I've attempted to follow the upstream conventions in the DT commits,
   7 but this is just presented here initially as a talking point.
   8
   9 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  10 ---
  11  arch/arm/boot/dts/Makefile            |   1 +
  12  arch/arm/boot/dts/bcm2838-rpi-4-b.dts | 118 ++++++++++++++++++++++++++
  13  arch/arm/boot/dts/bcm2838-rpi.dtsi    |  25 ++++++
  14  3 files changed, 144 insertions(+)
  15  create mode 100644 arch/arm/boot/dts/bcm2838-rpi-4-b.dts
  16  create mode 100644 arch/arm/boot/dts/bcm2838-rpi.dtsi
  17
  18 --- a/arch/arm/boot/dts/Makefile
  19 +++ b/arch/arm/boot/dts/Makefile
  20 @@ -94,6 +94,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
  21         bcm2836-rpi-2-b.dtb \
  22         bcm2837-rpi-3-b.dtb \
  23         bcm2837-rpi-3-b-plus.dtb \
  24 +       bcm2838-rpi-4-b.dtb \
  25         bcm2835-rpi-zero.dtb \
  26         bcm2835-rpi-zero-w.dtb
  27  dtb-$(CONFIG_ARCH_BCM_5301X) += \
  28 --- /dev/null
  29 +++ b/arch/arm/boot/dts/bcm2838-rpi-4-b.dts
  30 @@ -0,0 +1,118 @@
  31 +// SPDX-License-Identifier: GPL-2.0
  32 +/dts-v1/;
  33 +#include "bcm2838.dtsi"
  34 +#include "bcm2835-rpi.dtsi"
  35 +#include "bcm2838-rpi.dtsi"
  36 +
  37 +/ {
  38 +       compatible = "raspberrypi,4-model-b", "brcm,bcm2838";
  39 +       model = "Raspberry Pi 4 Model B";
  40 +
  41 +       chosen {
  42 +               /* 8250 auxiliary UART instead of pl011 */
  43 +               stdout-path = "serial1:115200n8";
  44 +       };
  45 +
  46 +       memory {
  47 +               reg = <0 0 0x40000000>;
  48 +       };
  49 +
  50 +       leds {
  51 +               act {
  52 +                       gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
  53 +               };
  54 +
  55 +               pwr {
  56 +                       label = "PWR";
  57 +                       gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
  58 +               };
  59 +       };
  60 +
  61 +       wifi_pwrseq: wifi-pwrseq {
  62 +               compatible = "mmc-pwrseq-simple";
  63 +               reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
  64 +       };
  65 +
  66 +       sd_io_1v8_reg: sd_io_1v8_reg {
  67 +               status = "okay";
  68 +               compatible = "regulator-gpio";
  69 +               vin-supply = <&vdd_5v0_reg>;
  70 +               regulator-name = "vdd-sd-io";
  71 +               regulator-min-microvolt = <1800000>;
  72 +               regulator-max-microvolt = <3300000>;
  73 +               regulator-boot-on;
  74 +               regulator-always-on;
  75 +               regulator-settling-time-us = <5000>;
  76 +
  77 +               gpios = <&expgpio 4 GPIO_ACTIVE_HIGH>;
  78 +               states = <1800000 0x1
  79 +                         3300000 0x0>;
  80 +       };
  81 +};
  82 +
  83 +&firmware {
  84 +       expgpio: gpio {
  85 +               compatible = "raspberrypi,firmware-gpio";
  86 +               gpio-controller;
  87 +               #gpio-cells = <2>;
  88 +               gpio-line-names = "BT_ON",
  89 +                                 "WL_ON",
  90 +                                 "PWR_LED_OFF",
  91 +                                 "GLOBAL_RESET",
  92 +                                 "VDD_SD_IO_SEL",
  93 +                                 "CAM_GPIO",
  94 +                                 "",
  95 +                                 "";
  96 +               status = "okay";
  97 +       };
  98 +};
  99 +
 100 +&pwm1 {
 101 +       pinctrl-names = "default";
 102 +       pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
 103 +       status = "okay";
 104 +};
 105 +
 106 +/* SDHCI is used to control the SDIO for wireless */
 107 +&sdhci {
 108 +       #address-cells = <1>;
 109 +       #size-cells = <0>;
 110 +       pinctrl-names = "default";
 111 +       pinctrl-0 = <&emmc_gpio34>;
 112 +       status = "okay";
 113 +       bus-width = <4>;
 114 +       non-removable;
 115 +       mmc-pwrseq = <&wifi_pwrseq>;
 116 +
 117 +       brcmf: wifi@1 {
 118 +               reg = <1>;
 119 +               compatible = "brcm,bcm4329-fmac";
 120 +       };
 121 +};
 122 +
 123 +/* EMMC2 is used to drive the SD card */
 124 +&emmc2 {
 125 +       status = "okay";
 126 +       broken-cd;
 127 +       vqmmc-supply = <&sd_io_1v8_reg>;
 128 +};
 129 +
 130 +/* uart0 communicates with the BT module */
 131 +&uart0 {
 132 +       pinctrl-names = "default";
 133 +       pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
 134 +       status = "okay";
 135 +
 136 +       bluetooth {
 137 +               compatible = "brcm,bcm43438-bt";
 138 +               max-speed = <2000000>;
 139 +               shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
 140 +       };
 141 +};
 142 +
 143 +/* uart1 is mapped to the pin header */
 144 +&uart1 {
 145 +       pinctrl-names = "default";
 146 +       pinctrl-0 = <&uart1_gpio14>;
 147 +       status = "okay";
 148 +};
 149 --- /dev/null
 150 +++ b/arch/arm/boot/dts/bcm2838-rpi.dtsi
 151 @@ -0,0 +1,25 @@
 152 +// SPDX-License-Identifier: GPL-2.0
 153 +
 154 +/ {
 155 +       soc {
 156 +               /delete-node/ mailbox@7e00b840;
 157 +       };
 158 +};
 159 +
 160 +&scb {
 161 +       vchiq: mailbox@7e00b840 {
 162 +               compatible = "brcm,bcm2838-vchiq";
 163 +               reg = <0 0x7e00b840 0x3c>;
 164 +               interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
 165 +       };
 166 +};
 167 +
 168 +&dma {
 169 +       /* The VPU firmware uses DMA channel 11 for VCHIQ */
 170 +       brcm,dma-channel-mask = <0x1f5>;
 171 +};
 172 +
 173 +&dma40 {
 174 +       /* The VPU firmware DMA channel 11 for VCHIQ */
 175 +       brcm,dma-channel-mask = <0x7000>;
 176 +};