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arm64: dts: add support for A4 based Amlogic BA400

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Amlogic A4 is an application processor designed for smart audio
and IoT applications.

Add basic support for the A4 based Amlogic BA400 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-v3-4-cb29ae1c16da@amlogic.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
This commit is contained in:
Xianwei Zhao
2024-04-01 18:10:52 +08:00
committed by Neil Armstrong
parent a652d67a84
commit 6ef63301fa
4 changed files with 149 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm64/boot/dts/amlogic/Makefile
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@@ -1,4 +1,5 @@
# SPDX-License-Identifier: GPL-2.0
dtb-$(CONFIG_ARCH_MESON) += amlogic-a4-a113l2-ba400.dtb
dtb-$(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

42
arch/arm64/boot/dts/amlogic/amlogic-a4-a113l2-ba400.dts Normal file
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@@ -0,0 +1,42 @@
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2024 Amlogic, Inc. All rights reserved.
*/
/dts-v1/;
#include "amlogic-a4.dtsi"
/ {
model = "Amlogic A113L2 ba400 Development Board";
compatible = "amlogic,ba400", "amlogic,a4";
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";
};

66
arch/arm64/boot/dts/amlogic/amlogic-a4-common.dtsi Normal file
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@@ -0,0 +1,66 @@
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2024 Amlogic, Inc. All rights reserved.
*/
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/gpio/gpio.h>
/ {
timer {
compatible = "arm,armv8-timer";
interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
<GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
<GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
<GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
};
psci {
compatible = "arm,psci-1.0";
method = "smc";
};
xtal: xtal-clk {
compatible = "fixed-clock";
clock-frequency = <24000000>;
clock-output-names = "xtal";
#clock-cells = <0>;
};
soc {
compatible = "simple-bus";
#address-cells = <2>;
#size-cells = <2>;
ranges;
gic: interrupt-controller@fff01000 {
compatible = "arm,gic-400";
reg = <0x0 0xfff01000 0 0x1000>,
<0x0 0xfff02000 0 0x2000>,
<0x0 0xfff04000 0 0x2000>,
<0x0 0xfff06000 0 0x2000>;
#interrupt-cells = <3>;
#address-cells = <0>;
interrupt-controller;
interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
};
apb: bus@fe000000 {
compatible = "simple-bus";
reg = <0x0 0xfe000000 0x0 0x480000>;
#address-cells = <2>;
#size-cells = <2>;
ranges = <0x0 0x0 0x0 0xfe000000 0x0 0x480000>;
uart_b: serial@7a000 {
compatible = "amlogic,a4-uart",
"amlogic,meson-s4-uart";
reg = <0x0 0x7a000 0x0 0x18>;
interrupts = <GIC_SPI 169 IRQ_TYPE_EDGE_RISING>;
clocks = <&xtal>, <&xtal>, <&xtal>;
clock-names = "xtal", "pclk", "baud";
status = "disabled";
};
};
};
};

40
arch/arm64/boot/dts/amlogic/amlogic-a4.dtsi Normal file
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@@ -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-a53";
reg = <0x0 0x0>;
enable-method = "psci";
};
cpu1: cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a53";
reg = <0x0 0x1>;
enable-method = "psci";
};
cpu2: cpu@2 {
device_type = "cpu";
compatible = "arm,cortex-a53";
reg = <0x0 0x2>;
enable-method = "psci";
};
cpu3: cpu@3 {
device_type = "cpu";
compatible = "arm,cortex-a53";
reg = <0x0 0x3>;
enable-method = "psci";
};
};
};