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From ab5164dbd0241da27ec87eff34408dd97d9658c0 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Thu, 9 Sep 2021 10:37:15 +0100
Subject: [PATCH] ARM: dts: Add Pi Zero 2 support
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
arch/arm/boot/dts/Makefile | 1 +
arch/arm/boot/dts/bcm2710-rpi-zero-2.dts | 177 ++++++++++++++++++
arch/arm64/boot/dts/broadcom/Makefile | 1 +
.../boot/dts/broadcom/bcm2710-rpi-zero-2.dts | 1 +
4 files changed, 180 insertions(+)
create mode 100644 arch/arm/boot/dts/bcm2710-rpi-zero-2.dts
create mode 100644 arch/arm64/boot/dts/broadcom/bcm2710-rpi-zero-2.dts
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -7,6 +7,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += \
bcm2708-rpi-cm.dtb \
bcm2708-rpi-zero.dtb \
bcm2708-rpi-zero-w.dtb \
+ bcm2710-rpi-zero-2.dtb \
bcm2709-rpi-2-b.dtb \
bcm2710-rpi-2-b.dtb \
bcm2710-rpi-3-b.dtb \
--- /dev/null
+++ b/arch/arm/boot/dts/bcm2710-rpi-zero-2.dts
@@ -0,0 +1,177 @@
+/dts-v1/;
+
+#include "bcm2710.dtsi"
+#include "bcm2709-rpi.dtsi"
+#include "bcm283x-rpi-csi1-2lane.dtsi"
+#include "bcm283x-rpi-i2c0mux_0_44.dtsi"
+#include "bcm2708-rpi-bt.dtsi"
+#include "bcm283x-rpi-cam1-regulator.dtsi"
+
+/ {
+ compatible = "raspberrypi,model-zero-2", "brcm,bcm2837";
+ model = "Raspberry Pi Zero 2";
+
+ chosen {
+ bootargs = "coherent_pool=1M 8250.nr_uarts=1 snd_bcm2835.enable_compat_alsa=0 snd_bcm2835.enable_hdmi=1";
+ };
+
+ aliases {
+ serial0 = &uart1;
+ serial1 = &uart0;
+ mmc1 = &mmcnr;
+ };
+};
+
+&gpio {
+ spi0_pins: spi0_pins {
+ brcm,pins = <9 10 11>;
+ brcm,function = <4>; /* alt0 */
+ };
+
+ spi0_cs_pins: spi0_cs_pins {
+ brcm,pins = <8 7>;
+ brcm,function = <1>; /* output */
+ };
+
+ i2c0_pins: i2c0 {
+ brcm,pins = <0 1>;
+ brcm,function = <4>;
+ };
+
+ i2c1_pins: i2c1 {
+ brcm,pins = <2 3>;
+ brcm,function = <4>;
+ };
+
+ i2s_pins: i2s {
+ brcm,pins = <18 19 20 21>;
+ brcm,function = <4>; /* alt0 */
+ };
+
+ sdio_pins: sdio_pins {
+ brcm,pins = <34 35 36 37 38 39>;
+ brcm,function = <7>; // alt3 = SD1
+ brcm,pull = <0 2 2 2 2 2>;
+ };
+
+ bt_pins: bt_pins {
+ brcm,pins = <43>;
+ brcm,function = <4>; /* alt0:GPCLK2 */
+ brcm,pull = <0>;
+ };
+
+ uart0_pins: uart0_pins {
+ brcm,pins = <30 31 32 33>;
+ brcm,function = <7>; /* alt3=UART0 */
+ brcm,pull = <2 0 0 2>; /* up none none up */
+ };
+
+ uart1_pins: uart1_pins {
+ brcm,pins;
+ brcm,function;
+ brcm,pull;
+ };
+
+ audio_pins: audio_pins {
+ brcm,pins = <>;
+ brcm,function = <>;
+ };
+};
+
+&mmcnr {
+ pinctrl-names = "default";
+ pinctrl-0 = <&sdio_pins>;
+ bus-width = <4>;
+ status = "okay";
+};
+
+&uart0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart0_pins &bt_pins>;
+ status = "okay";
+};
+
+&uart1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart1_pins>;
+ status = "okay";
+};
+
+&spi0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&spi0_pins &spi0_cs_pins>;
+ cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
+
+ spidev0: spidev@0{
+ compatible = "spidev";
+ reg = <0>; /* CE0 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi-max-frequency = <125000000>;
+ };
+
+ spidev1: spidev@1{
+ compatible = "spidev";
+ reg = <1>; /* CE1 */
+ #address-cells = <1>;
+ #size-cells = <0>;
+ spi-max-frequency = <125000000>;
+ };
+};
+
+&i2c0if {
+ clock-frequency = <100000>;
+};
+
+&i2c1 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c1_pins>;
+ clock-frequency = <100000>;
+};
+
+&i2c2 {
+ clock-frequency = <100000>;
+};
+
+&i2s {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+ act_led: led-act {
+ label = "led0";
+ linux,default-trigger = "actpwr";
+ gpios = <&gpio 29 GPIO_ACTIVE_LOW>;
+ };
+};
+
+&hdmi {
+ hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
+};
+
+&audio {
+ pinctrl-names = "default";
+ pinctrl-0 = <&audio_pins>;
+ brcm,disable-headphones = <1>;
+};
+
+&bt {
+ shutdown-gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
+};
+
+&minibt {
+ shutdown-gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
+};
+
+&cam1_reg {
+ gpio = <&gpio 40 GPIO_ACTIVE_HIGH>;
+};
+
+/ {
+ __overrides__ {
+ act_led_gpio = <&act_led>,"gpios:4";
+ act_led_activelow = <&act_led>,"gpios:8";
+ act_led_trigger = <&act_led>,"linux,default-trigger";
+ };
+};
--- a/arch/arm64/boot/dts/broadcom/Makefile
+++ b/arch/arm64/boot/dts/broadcom/Makefile
@@ -5,6 +5,7 @@ dtb-$(CONFIG_ARCH_BCM2835) += bcm2711-rp
bcm2837-rpi-3-b.dtb \
bcm2837-rpi-3-b-plus.dtb \
bcm2837-rpi-cm3-io3.dtb
+dtb-$(CONFIG_ARCH_BCM2835) += bcm2710-rpi-zero-2.dtb
dtb-$(CONFIG_ARCH_BCM2835) += bcm2710-rpi-2-b.dtb
dtb-$(CONFIG_ARCH_BCM2835) += bcm2710-rpi-3-b.dtb
dtb-$(CONFIG_ARCH_BCM2835) += bcm2710-rpi-3-b-plus.dtb
--- /dev/null
+++ b/arch/arm64/boot/dts/broadcom/bcm2710-rpi-zero-2.dts
@@ -0,0 +1 @@
+#include "../../../../arm/boot/dts/bcm2710-rpi-zero-2.dts"
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