Commit 1c701acc authored by Stefan Wahren's avatar Stefan Wahren Committed by Nicolas Saenz Julienne
Browse files

ARM: dts: Add Raspberry Pi 400 support 



The Raspberry Pi 400 is like a Pi 4 B designed into a keyboard. But there
are some minor differences:

- higher CPU clock rate (1.8 GHz)
- different Wifi chip (BCM43456)
- power off is now handled via GPIO
- no ACT LED

Signed-off-by: default avatarStefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622981777-5023-7-git-send-email-stefan.wahren@i2se.com


Signed-off-by: default avatarNicolas Saenz Julienne <nsaenz@kernel.org>
parent 5f30dacf

arch/arm/boot/dts/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -88,6 +88,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \ 
	bcm2837-rpi-3-b.dtb \

	bcm2837-rpi-3-b-plus.dtb \

	bcm2837-rpi-cm3-io3.dtb \

	bcm2711-rpi-400.dtb \

	bcm2711-rpi-4-b.dtb \

	bcm2835-rpi-zero.dtb \

	bcm2835-rpi-zero-w.dtb

arch/arm/boot/dts/bcm2711-rpi-400.dts

0 → 100644
+45 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

/dts-v1/;

#include "bcm2711-rpi-4-b.dts"



/ {

	compatible = "raspberrypi,400", "brcm,bcm2711";

	model = "Raspberry Pi 400";



	chosen {

		/* 8250 auxiliary UART instead of pl011 */

		stdout-path = "serial1:115200n8";

	};



	leds {

		/delete-node/ led-act;



		led-pwr {

			gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;

		};

	};



	gpio-poweroff {

		compatible = "gpio-poweroff";

		gpios = <&expgpio 5 GPIO_ACTIVE_HIGH>;

	};

};



&expgpio {

	gpio-line-names = "BT_ON",

			  "WL_ON",

			  "",

			  "GLOBAL_RESET",

			  "VDD_SD_IO_SEL",

			  "CAM_GPIO",

			  "SD_PWR_ON",

			  "SD_OC_N";

};



&genet_mdio {

	clock-frequency = <1950000>;

};



&pm {

	/delete-property/ system-power-controller;

};