[PATCH v6 14/20] arm64: dts: apple: Add A8X devices

From: Nick Chan
Date: Mon Oct 07 2024 - 03:12:35 EST

From: Konrad Dybcio <konradybcio@xxxxxxxxxx>

Add DTS files for the A8X SoC and the only device based on it, the iPad
Air 2.

Signed-off-by: Konrad Dybcio <konradybcio@xxxxxxxxxx>
[Markuss: System memory bits]
Co-developed-by: Markuss Broks <markuss.broks@xxxxxxxxx>
Signed-off-by: Markuss Broks <markuss.broks@xxxxxxxxx>
[Nick: SMP, m1n1 and gpio-keys support, pinctrl fixes]
Co-developed-by: Nick Chan <towinchenmi@xxxxxxxxx>
Signed-off-by: Nick Chan <towinchenmi@xxxxxxxxx>
---
arch/arm64/boot/dts/apple/Makefile | 2 +
arch/arm64/boot/dts/apple/t7001-air2.dtsi | 74 +++++++++++++
arch/arm64/boot/dts/apple/t7001-j81.dts | 14 +++
arch/arm64/boot/dts/apple/t7001-j82.dts | 14 +++
arch/arm64/boot/dts/apple/t7001.dtsi | 123 ++++++++++++++++++++++
5 files changed, 227 insertions(+)
create mode 100644 arch/arm64/boot/dts/apple/t7001-air2.dtsi
create mode 100644 arch/arm64/boot/dts/apple/t7001-j81.dts
create mode 100644 arch/arm64/boot/dts/apple/t7001-j82.dts
create mode 100644 arch/arm64/boot/dts/apple/t7001.dtsi

diff --git a/arch/arm64/boot/dts/apple/Makefile b/arch/arm64/boot/dts/apple/Makefile
index d5dd1e2e4f4c..adda522ea490 100644
--- a/arch/arm64/boot/dts/apple/Makefile
+++ b/arch/arm64/boot/dts/apple/Makefile
@@ -16,6 +16,8 @@ dtb-$(CONFIG_ARCH_APPLE) += t7000-j97.dtb
dtb-$(CONFIG_ARCH_APPLE) += t7000-n102.dtb
dtb-$(CONFIG_ARCH_APPLE) += t7000-n56.dtb
dtb-$(CONFIG_ARCH_APPLE) += t7000-n61.dtb
+dtb-$(CONFIG_ARCH_APPLE) += t7001-j81.dtb
+dtb-$(CONFIG_ARCH_APPLE) += t7001-j82.dtb
dtb-$(CONFIG_ARCH_APPLE) += t8103-j274.dtb
dtb-$(CONFIG_ARCH_APPLE) += t8103-j293.dtb
dtb-$(CONFIG_ARCH_APPLE) += t8103-j313.dtb
diff --git a/arch/arm64/boot/dts/apple/t7001-air2.dtsi b/arch/arm64/boot/dts/apple/t7001-air2.dtsi
new file mode 100644
index 000000000000..19fabd425c52
--- /dev/null
+++ b/arch/arm64/boot/dts/apple/t7001-air2.dtsi
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0+ OR MIT
+/*
+ * Apple iPad Air 2 common device tree
+ * Copyright (c) 2022, Konrad Dybcio <konradybcio@xxxxxxxxxx>
+ */
+
+#include "t7001.dtsi"
+#include <dt-bindings/input/input.h>
+
+/ {
+ chassis-type = "tablet";
+
+ chosen {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ stdout-path = "serial0";
+
+ framebuffer0: framebuffer@0 {
+ compatible = "apple,simple-framebuffer", "simple-framebuffer";
+ reg = <0 0 0 0>; /* To be filled by loader */
+ /* Format properties will be added by loader */
+ status = "disabled";
+ };
+ };
+
+ gpio-keys {
+ compatible = "gpio-keys";
+
+ button-home {
+ label = "Home Button";
+ gpios = <&pinctrl 0 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_HOMEPAGE>;
+ wakeup-source;
+ };
+
+ button-power {
+ label = "Power Button";
+ gpios = <&pinctrl 1 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_POWER>;
+ wakeup-source;
+ };
+
+ button-volup {
+ label = "Volume Up";
+ gpios = <&pinctrl 92 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_VOLUMEUP>;
+ };
+
+ button-voldown {
+ label = "Volume Down";
+ gpios = <&pinctrl 93 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_VOLUMEDOWN>;
+ };
+ };
+
+ memory@800000000 {
+ device_type = "memory";
+ reg = <0x8 0 0 0>; /* To be filled by loader */
+ };
+
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ /* To be filled by loader */
+ };
+};
+
+&serial0 {
+ status = "okay";
+};
diff --git a/arch/arm64/boot/dts/apple/t7001-j81.dts b/arch/arm64/boot/dts/apple/t7001-j81.dts
new file mode 100644
index 000000000000..ca90dc0c872c
--- /dev/null
+++ b/arch/arm64/boot/dts/apple/t7001-j81.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0+ OR MIT
+/*
+ * Apple iPad Air 2 (Wi-Fi), J81, iPad5,3 (A1566)
+ * Copyright (c) 2022, Konrad Dybcio <konradybcio@xxxxxxxxxx>
+ */
+
+/dts-v1/;
+
+#include "t7001-air2.dtsi"
+
+/ {
+ compatible = "apple,j81", "apple,t7001", "apple,arm-platform";
+ model = "Apple iPad Air 2 (Wi-Fi)";
+};
diff --git a/arch/arm64/boot/dts/apple/t7001-j82.dts b/arch/arm64/boot/dts/apple/t7001-j82.dts
new file mode 100644
index 000000000000..d9fd16f48db7
--- /dev/null
+++ b/arch/arm64/boot/dts/apple/t7001-j82.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0+ OR MIT
+/*
+ * Apple iPad Air 2 (Cellular), J82, iPad5,4 (A1567)
+ * Copyright (c) 2022, Konrad Dybcio <konradybcio@xxxxxxxxxx>
+ */
+
+/dts-v1/;
+
+#include "t7001-air2.dtsi"
+
+/ {
+ compatible = "apple,j82", "apple,t7001", "apple,arm-platform";
+ model = "Apple iPad Air 2 (Cellular)";
+};
diff --git a/arch/arm64/boot/dts/apple/t7001.dtsi b/arch/arm64/boot/dts/apple/t7001.dtsi
new file mode 100644
index 000000000000..a76e034c85e3
--- /dev/null
+++ b/arch/arm64/boot/dts/apple/t7001.dtsi
@@ -0,0 +1,123 @@
+// SPDX-License-Identifier: GPL-2.0+ OR MIT
+/*
+ * Apple T7001 "A8X" SoC
+ *
+ * Copyright (c) 2022, Konrad Dybcio <konradybcio@xxxxxxxxxx>
+ * Based on Asahi Linux's M1 (t8103.dtsi) and Corellium's A10 efforts.
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/apple-aic.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/pinctrl/apple.h>
+
+/ {
+ interrupt-parent = <&aic>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ aliases {
+ serial0 = &serial0;
+ };
+
+ clkref: clock-ref {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <24000000>;
+ clock-output-names = "clkref";
+ };
+
+ cpus {
+ #address-cells = <2>;
+ #size-cells = <0>;
+
+ cpu0: cpu@0 {
+ compatible = "apple,typhoon";
+ reg = <0x0 0x0>;
+ cpu-release-addr = <0 0>; /* To be filled in by loader */
+ enable-method = "spin-table";
+ device_type = "cpu";
+ };
+
+ cpu1: cpu@1 {
+ compatible = "apple,typhoon";
+ reg = <0x0 0x1>;
+ cpu-release-addr = <0 0>; /* To be filled in by loader */
+ enable-method = "spin-table";
+ device_type = "cpu";
+ };
+
+ cpu2: cpu@2 {
+ compatible = "apple,typhoon";
+ reg = <0x0 0x2>;
+ cpu-release-addr = <0 0>; /* To be filled by loader */
+ enable-method = "spin-table";
+ device_type = "cpu";
+ };
+ };
+
+ soc {
+ compatible = "simple-bus";
+ #address-cells = <2>;
+ #size-cells = <2>;
+ nonposted-mmio;
+ ranges;
+
+ serial0: serial@20a0c0000 {
+ compatible = "apple,s5l-uart";
+ reg = <0x2 0x0a0c0000 0x0 0x4000>;
+ reg-io-width = <4>;
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 158 IRQ_TYPE_LEVEL_HIGH>;
+ /* Use the bootloader-enabled clocks for now. */
+ clocks = <&clkref>, <&clkref>;
+ clock-names = "uart", "clk_uart_baud0";
+ status = "disabled";
+ };
+
+ wdt: watchdog@20e027000 {
+ compatible = "apple,t7000-wdt", "apple,wdt";
+ reg = <0x2 0x0e027000 0x0 0x1000>;
+ clocks = <&clkref>;
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 4 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+ aic: interrupt-controller@20e100000 {
+ compatible = "apple,t7000-aic", "apple,aic";
+ reg = <0x2 0x0e100000 0x0 0x100000>;
+ #interrupt-cells = <3>;
+ interrupt-controller;
+ };
+
+ pinctrl: pinctrl@20e300000 {
+ compatible = "apple,t7000-pinctrl", "apple,pinctrl";
+ reg = <0x2 0x0e300000 0x0 0x100000>;
+
+ gpio-controller;
+ #gpio-cells = <2>;
+ gpio-ranges = <&pinctrl 0 0 184>;
+ apple,npins = <184>;
+
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupt-parent = <&aic>;
+ interrupts = <AIC_IRQ 62 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 63 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 64 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 65 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 66 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 67 IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_IRQ 68 IRQ_TYPE_LEVEL_HIGH>;
+ };
+ };
+
+ timer {
+ compatible = "arm,armv8-timer";
+ interrupt-parent = <&aic>;
+ interrupt-names = "phys", "virt";
+ /* Note that A8X doesn't actually have a hypervisor (EL2 is not implemented). */
+ interrupts = <AIC_FIQ AIC_TMR_GUEST_PHYS IRQ_TYPE_LEVEL_HIGH>,
+ <AIC_FIQ AIC_TMR_GUEST_VIRT IRQ_TYPE_LEVEL_HIGH>;
+ };
+};
--
2.46.2