Try to add basic DT support for the Amlogic's Meson-G12A S905D2 SoC, which describe components as follows: Reserve Memory, CPU, GIC, IRQ, Timer, UART. It's capable of booting up into the serial console.
Signed-off-by: Jianxin Pan <jianxin....@amlogic.com> --- arch/arm64/boot/dts/amlogic/Makefile | 1 + arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts | 22 +++ arch/arm64/boot/dts/amlogic/meson-g12a.dtsi | 172 ++++++++++++++++++++++++ 3 files changed, 195 insertions(+) create mode 100644 arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts create mode 100644 arch/arm64/boot/dts/amlogic/meson-g12a.dtsi diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile index a97c0e2..c31f29d6 100644 --- 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-$(CONFIG_ARCH_MESON) += meson-axg-s400.dtb +dtb-$(CONFIG_ARCH_MESON) += meson-g12a-u200.dtb dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-nanopi-k2.dtb dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-nexbox-a95x.dtb dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-odroidc2.dtb diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts b/arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts new file mode 100644 index 0000000..d267a37 --- /dev/null +++ b/arch/arm64/boot/dts/amlogic/meson-g12a-u200.dts @@ -0,0 +1,22 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright (c) 2018 Amlogic, Inc. All rights reserved. + */ + +/dts-v1/; + +#include "meson-g12a.dtsi" + +/ { + compatible = "amlogic,u200", "amlogic,g12a"; + model = "Amlogic Meson G12A U200 Development Board"; + + aliases { + serial0 = &uart_AO; + }; +}; + +&uart_AO { + status = "okay"; +}; + diff --git a/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi new file mode 100644 index 0000000..3b82a97 --- /dev/null +++ b/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi @@ -0,0 +1,172 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright (c) 2018 Amlogic, Inc. All rights reserved. + */ + +#include <dt-bindings/gpio/gpio.h> +#include <dt-bindings/interrupt-controller/irq.h> +#include <dt-bindings/interrupt-controller/arm-gic.h> + +/ { + compatible = "amlogic,g12a"; + + interrupt-parent = <&gic>; + #address-cells = <2>; + #size-cells = <2>; + + cpus { + #address-cells = <0x2>; + #size-cells = <0x0>; + + cpu0: cpu@0 { + device_type = "cpu"; + compatible = "arm,cortex-a53", "arm,armv8"; + reg = <0x0 0x0>; + enable-method = "psci"; + next-level-cache = <&l2>; + }; + + cpu1: cpu@1 { + device_type = "cpu"; + compatible = "arm,cortex-a53", "arm,armv8"; + reg = <0x0 0x1>; + enable-method = "psci"; + next-level-cache = <&l2>; + }; + + cpu2: cpu@2 { + device_type = "cpu"; + compatible = "arm,cortex-a53", "arm,armv8"; + reg = <0x0 0x2>; + enable-method = "psci"; + next-level-cache = <&l2>; + }; + + cpu3: cpu@3 { + device_type = "cpu"; + compatible = "arm,cortex-a53", "arm,armv8"; + reg = <0x0 0x3>; + enable-method = "psci"; + next-level-cache = <&l2>; + }; + + l2: l2-cache0 { + compatible = "cache"; + }; + }; + + psci { + compatible = "arm,psci-1.0"; + method = "smc"; + }; + + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + /* 3 MiB reserved for ARM Trusted Firmware (BL31) */ + secmon_reserved: secmon@5000000 { + reg = <0x0 0x05000000 0x0 0x300000>; + no-map; + }; + }; + + soc { + compatible = "simple-bus"; + #address-cells = <2>; + #size-cells = <2>; + ranges; + + periphs: periphs@ff634000 { + compatible = "simple-bus"; + reg = <0x0 0xff634000 0x0 0x2000>; + #address-cells = <2>; + #size-cells = <2>; + ranges = <0x0 0x0 0x0 0xff634000 0x0 0x2000>; + }; + + hiubus: bus@ff63c000 { + compatible = "simple-bus"; + reg = <0x0 0xff63c000 0x0 0x1c00>; + #address-cells = <2>; + #size-cells = <2>; + ranges = <0x0 0x0 0x0 0xff63c000 0x0 0x1c00>; + }; + + aobus: bus@ff800000 { + compatible = "simple-bus"; + reg = <0x0 0xff800000 0x0 0x100000>; + #address-cells = <2>; + #size-cells = <2>; + ranges = <0x0 0x0 0x0 0xff800000 0x0 0x100000>; + + uart_AO: serial@3000 { + compatible = "amlogic,meson-gx-uart", "amlogic,meson-ao-uart"; + reg = <0x0 0x3000 0x0 0x18>; + interrupts = <GIC_SPI 193 IRQ_TYPE_EDGE_RISING>; + clocks = <&xtal>, <&xtal>, <&xtal>; + clock-names = "xtal", "pclk", "baud"; + status = "disabled"; + }; + + uart_AO_B: serial@4000 { + compatible = "amlogic,meson-gx-uart", "amlogic,meson-ao-uart"; + reg = <0x0 0x4000 0x0 0x18>; + interrupts = <GIC_SPI 197 IRQ_TYPE_EDGE_RISING>; + clocks = <&xtal>, <&xtal>, <&xtal>; + clock-names = "xtal", "pclk", "baud"; + status = "disabled"; + }; + }; + + gic: interrupt-controller@ffc01000 { + compatible = "arm,gic-400"; + reg = <0x0 0xffc01000 0 0x1000>, + <0x0 0xffc02000 0 0x2000>, + <0x0 0xffc04000 0 0x2000>, + <0x0 0xffc06000 0 0x2000>; + interrupt-controller; + interrupts = <GIC_PPI 9 + (GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_HIGH)>; + #interrupt-cells = <3>; + #address-cells = <0>; + }; + + cbus: bus@ffd00000 { + compatible = "simple-bus"; + reg = <0x0 0xffd00000 0x0 0x25000>; + #address-cells = <2>; + #size-cells = <2>; + ranges = <0x0 0x0 0x0 0xffd00000 0x0 0x25000>; + }; + + apb: apb@ffe00000 { + compatible = "simple-bus"; + reg = <0x0 0xffe00000 0x0 0x200000>; + #address-cells = <2>; + #size-cells = <2>; + ranges = <0x0 0x0 0x0 0xffe00000 0x0 0x200000>; + }; + }; + + timer { + compatible = "arm,armv8-timer"; + interrupts = <GIC_PPI 13 + (GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_LEVEL_LOW)>, + <GIC_PPI 14 + (GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_LEVEL_LOW)>, + <GIC_PPI 11 + (GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_LEVEL_LOW)>, + <GIC_PPI 10 + (GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_LEVEL_LOW)>; + }; + + xtal: xtal-clk { + compatible = "fixed-clock"; + clock-frequency = <24000000>; + clock-output-names = "xtal"; + #clock-cells = <0>; + }; + +}; -- 1.9.1