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linux
ARM: dts: bcm: Add support for Raspberry Pi 2 (2nd rev)
The Raspberry Pi 2 (2nd rev) has the BCM2837 SoC instead of the
BCM2836. Except of this the configuration of the board is same
as the predecessor (no WLAN, no BT).
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Link: https://lore.kernel.org/r/20250418143307.59235-3-wahrenst@gmx.net
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
authored by
Stefan Wahren
and committed by
Florian Fainelli
b0903497
8dbcbf93
+132
+2
arch/arm/boot/dts/broadcom/Makefile
+2
arch/arm/boot/dts/broadcom/Makefile
···
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DTC_FLAGS_bcm2835-rpi-a-plus := -@
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DTC_FLAGS_bcm2835-rpi-cm1-io1 := -@
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DTC_FLAGS_bcm2836-rpi-2-b := -@
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DTC_FLAGS_bcm2837-rpi-2-b := -@
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DTC_FLAGS_bcm2837-rpi-3-a-plus := -@
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DTC_FLAGS_bcm2837-rpi-3-b := -@
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DTC_FLAGS_bcm2837-rpi-3-b-plus := -@
···
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bcm2835-rpi-a-plus.dtb \
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bcm2835-rpi-cm1-io1.dtb \
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bcm2836-rpi-2-b.dtb \
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bcm2837-rpi-2-b.dtb \
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bcm2837-rpi-3-a-plus.dtb \
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bcm2837-rpi-3-b.dtb \
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bcm2837-rpi-3-b-plus.dtb \
+130
arch/arm/boot/dts/broadcom/bcm2837-rpi-2-b.dts
+130
arch/arm/boot/dts/broadcom/bcm2837-rpi-2-b.dts
···
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// SPDX-License-Identifier: GPL-2.0
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/dts-v1/;
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#include "bcm2837.dtsi"
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#include "bcm2836-rpi.dtsi"
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#include "bcm283x-rpi-led-deprecated.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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/ {
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compatible = "raspberrypi,2-model-b-rev2", "brcm,bcm2837";
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model = "Raspberry Pi 2 Model B rev 1.2";
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+
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memory@0 {
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device_type = "memory";
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reg = <0 0x40000000>;
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};
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};
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&gpio {
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/*
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* Taken from rpi_SCH_2b_1p2_reduced.pdf and
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* the official GPU firmware DT blob.
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*
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* Legend:
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* "FOO" = GPIO line named "FOO" on the schematic
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* "FOO_N" = GPIO line named "FOO" on schematic, active low
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*/
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gpio-line-names = "ID_SDA",
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"ID_SCL",
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"GPIO2",
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"GPIO3",
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"GPIO4",
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"GPIO5",
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"GPIO6",
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"GPIO7",
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"GPIO8",
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"GPIO9",
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"GPIO10",
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"GPIO11",
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"GPIO12",
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"GPIO13",
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"GPIO14",
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"GPIO15",
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"GPIO16",
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"GPIO17",
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"GPIO18",
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"GPIO19",
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"GPIO20",
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"GPIO21",
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"GPIO22",
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"GPIO23",
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"GPIO24",
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"GPIO25",
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"GPIO26",
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"GPIO27",
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"SDA0",
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"SCL0",
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"", /* GPIO30 */
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"LAN_RUN",
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"CAM_GPIO1",
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"", /* GPIO33 */
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"", /* GPIO34 */
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"PWR_LOW_N",
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"", /* GPIO36 */
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"", /* GPIO37 */
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"USB_LIMIT",
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"", /* GPIO39 */
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"PWM0_OUT",
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"CAM_GPIO0",
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"SMPS_SCL",
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"SMPS_SDA",
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"ETH_CLK",
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"PWM1_OUT",
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"HDMI_HPD_N",
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"STATUS_LED",
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/* Used by SD Card */
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"SD_CLK_R",
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"SD_CMD_R",
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"SD_DATA0_R",
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"SD_DATA1_R",
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"SD_DATA2_R",
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"SD_DATA3_R";
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pinctrl-names = "default";
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pinctrl-0 = <&gpioout &alt0 &i2s_alt0>;
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/* I2S interface */
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i2s_alt0: i2s_alt0 {
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brcm,pins = <18 19 20 21>;
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brcm,function = <BCM2835_FSEL_ALT0>;
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};
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};
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&hdmi {
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hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
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power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
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status = "okay";
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};
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&led_act {
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gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
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};
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&leds {
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led-pwr {
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label = "PWR";
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gpios = <&gpio 35 GPIO_ACTIVE_HIGH>;
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default-state = "keep";
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linux,default-trigger = "default-on";
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};
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};
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&pwm {
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pinctrl-names = "default";
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pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio45>;
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status = "okay";
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};
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&sdhost {
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pinctrl-names = "default";
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pinctrl-0 = <&sdhost_gpio48>;
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bus-width = <4>;
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status = "okay";
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};
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&uart0 {
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pinctrl-names = "default";
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pinctrl-0 = <&uart0_gpio14>;
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status = "okay";
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};