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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>
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2 changed files with 46 additions and 0 deletions
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@ -88,6 +88,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
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bcm2837-rpi-3-b.dtb \
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bcm2837-rpi-3-b-plus.dtb \
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bcm2837-rpi-cm3-io3.dtb \
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bcm2711-rpi-400.dtb \
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bcm2711-rpi-4-b.dtb \
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bcm2835-rpi-zero.dtb \
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bcm2835-rpi-zero-w.dtb
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45
arch/arm/boot/dts/bcm2711-rpi-400.dts
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45
arch/arm/boot/dts/bcm2711-rpi-400.dts
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@ -0,0 +1,45 @@
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// SPDX-License-Identifier: GPL-2.0
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/dts-v1/;
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#include "bcm2711-rpi-4-b.dts"
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/ {
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compatible = "raspberrypi,400", "brcm,bcm2711";
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model = "Raspberry Pi 400";
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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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leds {
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/delete-node/ led-act;
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led-pwr {
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gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
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};
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};
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gpio-poweroff {
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compatible = "gpio-poweroff";
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gpios = <&expgpio 5 GPIO_ACTIVE_HIGH>;
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};
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};
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&expgpio {
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gpio-line-names = "BT_ON",
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"WL_ON",
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"",
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"GLOBAL_RESET",
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"VDD_SD_IO_SEL",
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"CAM_GPIO",
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"SD_PWR_ON",
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"SD_OC_N";
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};
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&genet_mdio {
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clock-frequency = <1950000>;
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};
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&pm {
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/delete-property/ system-power-controller;
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};
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