arm64: dts: add support for A5 based Amlogic AV400

Amlogic A5 is an application processor designed for smart audio
and IoT applications.

Add basic support for the A5 based Amlogic AV400 board, which describes
the following components: CPU, GIC, IRQ, Timer and UART.
These are capable of booting up into the serial console.

Signed-off-by: Xianwei Zhao <xianwei.zhao@amlogic.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240401-basic_dt-v3-5-cb29ae1c16da@amlogic.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>

diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
index 2c1f3bb38f7828db053b25f50515112f55783343..0f29517da5ec153dfc9af1ec4350760a601c08aa 100644 (file)
--- a/arch/arm64/boot/dts/amlogic/Makefile
+++ b/arch/arm64/boot/dts/amlogic/Makefile
@@ -1,5 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_MESON) += amlogic-a4-a113l2-ba400.dtb
+dtb-$(CONFIG_ARCH_MESON) += amlogic-a5-a113x2-av400.dtb
 dtb-$(CONFIG_ARCH_MESON) += amlogic-c3-c302x-aw409.dtb
 dtb-$(CONFIG_ARCH_MESON) += amlogic-t7-a311d2-an400.dtb
 dtb-$(CONFIG_ARCH_MESON) += amlogic-t7-a311d2-khadas-vim4.dtb

diff --git a/arch/arm64/boot/dts/amlogic/amlogic-a5-a113x2-av400.dts b/arch/arm64/boot/dts/amlogic/amlogic-a5-a113x2-av400.dts
new file mode 100644 (file)
index 0000000..11d8b88
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/amlogic-a5-a113x2-av400.dts
@@ -0,0 +1,42 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2024 Amlogic, Inc. All rights reserved.
+ */
+
+/dts-v1/;
+
+#include "amlogic-a5.dtsi"
+
+/ {
+       model = "Amlogic A113X2 av400 Development Board";
+       compatible = "amlogic,av400", "amlogic,a5";
+       interrupt-parent = <&gic>;
+       #address-cells = <2>;
+       #size-cells = <2>;
+
+       aliases {
+               serial0 = &uart_b;
+       };
+
+       memory@0 {
+               device_type = "memory";
+               reg = <0x0 0x0 0x0 0x40000000>;
+       };
+
+       reserved-memory {
+               #address-cells = <2>;
+               #size-cells = <2>;
+               ranges;
+
+               /* 10 MiB reserved for ARM Trusted Firmware */
+               secmon_reserved: secmon@5000000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x0 0x05000000 0x0 0xa00000>;
+                       no-map;
+               };
+       };
+};
+
+&uart_b {
+       status = "okay";
+};

diff --git a/arch/arm64/boot/dts/amlogic/amlogic-a5.dtsi b/arch/arm64/boot/dts/amlogic/amlogic-a5.dtsi
new file mode 100644 (file)
index 0000000..43f68a7
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/amlogic-a5.dtsi
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2024 Amlogic, Inc. All rights reserved.
+ */
+
+#include "amlogic-a4-common.dtsi"
+/ {
+       cpus {
+               #address-cells = <2>;
+               #size-cells = <0>;
+
+               cpu0: cpu@0 {
+                       device_type = "cpu";
+                       compatible = "arm,cortex-a55";
+                       reg = <0x0 0x0>;
+                       enable-method = "psci";
+               };
+
+               cpu1: cpu@100 {
+                       device_type = "cpu";
+                       compatible = "arm,cortex-a55";
+                       reg = <0x0 0x100>;
+                       enable-method = "psci";
+               };
+
+               cpu2: cpu@200 {
+                       device_type = "cpu";
+                       compatible = "arm,cortex-a55";
+                       reg = <0x0 0x200>;
+                       enable-method = "psci";
+               };
+
+               cpu3: cpu@300 {
+                       device_type = "cpu";
+                       compatible = "arm,cortex-a55";
+                       reg = <0x0 0x300>;
+                       enable-method = "psci";
+               };
+       };
+};