arm64: dts: apple: Add A8X devices

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

Signed-off-by: Konrad Dybcio <konradybcio@kernel.org>
[Markuss: System memory bits]
Co-developed-by: Markuss Broks <markuss.broks@gmail.com>
Signed-off-by: Markuss Broks <markuss.broks@gmail.com>
[Nick: SMP, m1n1 and gpio-keys support, pinctrl fixes]
Co-developed-by: Nick Chan <towinchenmi@gmail.com>
Signed-off-by: Nick Chan <towinchenmi@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Signed-off-by: Hector Martin <marcan@marcan.st>

diff --git a/arch/arm64/boot/dts/apple/Makefile b/arch/arm64/boot/dts/apple/Makefile
index d5dd1e2e4f4c143c4aa1f63b862dd6fbfd1fc0eb..adda522ea490c654bffc99b987c27a260b8b3c55 100644 (file)
--- 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 (file)
index 0000000..19fabd4
--- /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@kernel.org>
+ */
+
+#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 (file)
index 0000000..ca90dc0
--- /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@kernel.org>
+ */
+
+/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 (file)
index 0000000..d9fd16f
--- /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@kernel.org>
+ */
+
+/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 (file)
index 0000000..a76e034
--- /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@kernel.org>
+ * 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>;
+       };
+};