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4d5b2eaf3c
Add a description of the RPi3 GPIO expander that the VC4 firmware controls. Acked-by: Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by: Baruch Siach <baruch@tkos.co.il> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Eric Anholt <eric@anholt.net> Signed-off-by: Eric Anholt <eric@anholt.net>
80 lines
1.4 KiB
Plaintext
80 lines
1.4 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0
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/dts-v1/;
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#include "bcm2837.dtsi"
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#include "bcm2835-rpi.dtsi"
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#include "bcm283x-rpi-smsc9514.dtsi"
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#include "bcm283x-rpi-usb-host.dtsi"
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/ {
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compatible = "raspberrypi,3-model-b", "brcm,bcm2837";
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model = "Raspberry Pi 3 Model B";
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chosen {
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/* 8250 auxiliary UART instead of pl011 */
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stdout-path = "serial1:115200n8";
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};
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memory {
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reg = <0 0x40000000>;
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};
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leds {
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act {
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gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
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};
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};
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};
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&firmware {
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expgpio: gpio {
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compatible = "raspberrypi,firmware-gpio";
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gpio-controller;
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#gpio-cells = <2>;
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gpio-line-names = "BT_ON",
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"WL_ON",
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"STATUS_LED",
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"LAN_RUN",
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"HPD_N",
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"CAM_GPIO0",
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"CAM_GPIO1",
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"PWR_LOW_N";
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status = "okay";
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};
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};
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/* uart0 communicates with the BT module */
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&uart0 {
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pinctrl-names = "default";
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pinctrl-0 = <&uart0_gpio32 &gpclk2_gpio43>;
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status = "okay";
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bluetooth {
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compatible = "brcm,bcm43438-bt";
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max-speed = <2000000>;
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};
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};
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/* uart1 is mapped to the pin header */
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&uart1 {
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pinctrl-names = "default";
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pinctrl-0 = <&uart1_gpio14>;
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status = "okay";
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};
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/* SDHCI is used to control the SDIO for wireless */
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&sdhci {
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pinctrl-names = "default";
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pinctrl-0 = <&emmc_gpio34>;
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status = "okay";
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bus-width = <4>;
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non-removable;
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};
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/* SDHOST is used to drive the SD card */
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&sdhost {
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pinctrl-names = "default";
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pinctrl-0 = <&sdhost_gpio48>;
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status = "okay";
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bus-width = <4>;
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};
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