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| author | Stefan Wahren <stefan.wahren@i2se.com> | 2021-06-06 14:16:16 +0200 |
|---|---|---|
| committer | Nicolas Saenz Julienne <nsaenz@kernel.org> | 2021-06-08 23:06:34 +0200 |
| commit | 1c701accecf21932ebcbd8acacb4557af3797e77 (patch) | |
| tree | fb638f0c5c6d258b6568ae2b2940c882fd30ba2c /arch | |
| parent | 5f30dacf37bc93308e91e4d0fc94681ca73f0f91 (diff) | |
| download | lwn-1c701accecf21932ebcbd8acacb4557af3797e77.tar.gz lwn-1c701accecf21932ebcbd8acacb4557af3797e77.zip | |
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: Stefan Wahren <stefan.wahren@i2se.com>
Link: https://lore.kernel.org/r/1622981777-5023-7-git-send-email-stefan.wahren@i2se.com
Signed-off-by: Nicolas Saenz Julienne <nsaenz@kernel.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/boot/dts/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/boot/dts/bcm2711-rpi-400.dts | 45 |
2 files changed, 46 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index f8f09c5066e7..ec00dba84f36 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -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 diff --git a/arch/arm/boot/dts/bcm2711-rpi-400.dts b/arch/arm/boot/dts/bcm2711-rpi-400.dts new file mode 100644 index 000000000000..f4d2fc20397c --- /dev/null +++ b/arch/arm/boot/dts/bcm2711-rpi-400.dts @@ -0,0 +1,45 @@ +// 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; +}; |