linux/arch/arm/boot/dts/bcm2837-rpi-3-b.dts
Stefan Wahren 0b559d5c5b ARM: dts: bcm283x: Add missing GPIO line names
The GPIO sysfs is deprecated and disabled in the defconfig files.
So in order to motivate the usage of the new GPIO character device API
add the missing GPIO line names for Raspberry Pi 2 and 3. In the lack
of full schematics i would leave all undocumented pins as unnamed.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Peter Robinson <pbrobinson@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
2019-02-01 11:56:21 +01:00

174 lines
3.1 KiB
Plaintext

// SPDX-License-Identifier: GPL-2.0
/dts-v1/;
#include "bcm2837.dtsi"
#include "bcm2836-rpi.dtsi"
#include "bcm283x-rpi-smsc9514.dtsi"
#include "bcm283x-rpi-usb-host.dtsi"
/ {
compatible = "raspberrypi,3-model-b", "brcm,bcm2837";
model = "Raspberry Pi 3 Model B";
chosen {
/* 8250 auxiliary UART instead of pl011 */
stdout-path = "serial1:115200n8";
};
memory@0 {
reg = <0 0x40000000>;
};
leds {
act {
gpios = <&expgpio 2 GPIO_ACTIVE_HIGH>;
};
};
wifi_pwrseq: wifi-pwrseq {
compatible = "mmc-pwrseq-simple";
reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
};
};
&firmware {
expgpio: gpio {
compatible = "raspberrypi,firmware-gpio";
gpio-controller;
#gpio-cells = <2>;
gpio-line-names = "BT_ON",
"WL_ON",
"STATUS_LED",
"LAN_RUN",
"HDMI_HPD_N",
"CAM_GPIO0",
"CAM_GPIO1",
"PWR_LOW_N";
status = "okay";
};
};
&gpio {
/*
* Taken from rpi_SCH_3b_1p2_reduced.pdf and
* the official GPU firmware DT blob.
*
* Legend:
* "NC" = not connected (no rail from the SoC)
* "FOO" = GPIO line named "FOO" on the schematic
* "FOO_N" = GPIO line named "FOO" on schematic, active low
*/
gpio-line-names = "ID_SDA",
"ID_SCL",
"SDA1",
"SCL1",
"GPIO_GCLK",
"GPIO5",
"GPIO6",
"SPI_CE1_N",
"SPI_CE0_N",
"SPI_MISO",
"SPI_MOSI",
"SPI_SCLK",
"GPIO12",
"GPIO13",
/* Serial port */
"TXD1",
"RXD1",
"GPIO16",
"GPIO17",
"GPIO18",
"GPIO19",
"GPIO20",
"GPIO21",
"GPIO22",
"GPIO23",
"GPIO24",
"GPIO25",
"GPIO26",
"GPIO27",
"", /* GPIO 28 */
"LAN_RUN_BOOT",
/* Used by BT module */
"CTS0",
"RTS0",
"TXD0",
"RXD0",
/* Used by Wifi */
"SD1_CLK",
"SD1_CMD",
"SD1_DATA0",
"SD1_DATA1",
"SD1_DATA2",
"SD1_DATA3",
"PWM0_OUT",
"PWM1_OUT",
"ETHCLK",
"WIFI_CLK",
"SDA0",
"SCL0",
"SMPS_SCL",
"SMPS_SDA",
/* Used by SD Card */
"SD_CLK_R",
"SD_CMD_R",
"SD_DATA0_R",
"SD_DATA1_R",
"SD_DATA2_R",
"SD_DATA3_R";
};
&pwm {
pinctrl-names = "default";
pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
status = "okay";
};
&hdmi {
hpd-gpios = <&expgpio 4 GPIO_ACTIVE_LOW>;
};
/* uart0 communicates with the BT module */
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_gpio32 &gpclk2_gpio43>;
status = "okay";
bluetooth {
compatible = "brcm,bcm43438-bt";
max-speed = <2000000>;
shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
};
};
/* uart1 is mapped to the pin header */
&uart1 {
pinctrl-names = "default";
pinctrl-0 = <&uart1_gpio14>;
status = "okay";
};
/* SDHCI is used to control the SDIO for wireless */
&sdhci {
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&emmc_gpio34>;
status = "okay";
bus-width = <4>;
non-removable;
mmc-pwrseq = <&wifi_pwrseq>;
brcmf: wifi@1 {
reg = <1>;
compatible = "brcm,bcm4329-fmac";
};
};
/* SDHOST is used to drive the SD card */
&sdhost {
pinctrl-names = "default";
pinctrl-0 = <&sdhost_gpio48>;
status = "okay";
bus-width = <4>;
};