On 21/08/2023 14:49, Binbin Zhou wrote:
> Add DeviceTree file for Loongson-2K0500 processor, which integrates one
> 64-bit dual emission superscalar LA264 processor core.
>
> Signed-off-by: Binbin Zhou <zhoubinbin@xxxxxxxxxxx>
> ---
> arch/loongarch/boot/dts/Makefile | 2 +
> .../boot/dts/loongson-2k0500-ref.dts | 88 ++++++
> arch/loongarch/boot/dts/loongson-2k0500.dtsi | 254 ++++++++++++++++++
> 3 files changed, 344 insertions(+)
> create mode 100644 arch/loongarch/boot/dts/loongson-2k0500-ref.dts
> create mode 100644 arch/loongarch/boot/dts/loongson-2k0500.dtsi
>
> diff --git a/arch/loongarch/boot/dts/Makefile b/arch/loongarch/boot/dts/Makefile
> index 1e24cdb5180a..aa0b21d73d4e 100644
> --- a/arch/loongarch/boot/dts/Makefile
> +++ b/arch/loongarch/boot/dts/Makefile
> @@ -1,3 +1,5 @@
> # SPDX-License-Identifier: GPL-2.0-only
>
> +dtb-$(CONFIG_MACH_LOONGSON64) = loongson-2k0500-ref.dtb
> +
> obj-$(CONFIG_BUILTIN_DTB) += $(addsuffix .dtb.o, $(CONFIG_BUILTIN_DTB_NAME))
> diff --git a/arch/loongarch/boot/dts/loongson-2k0500-ref.dts b/arch/loongarch/boot/dts/loongson-2k0500-ref.dts
> new file mode 100644
> index 000000000000..5014cc2b367a
> --- /dev/null
> +++ b/arch/loongarch/boot/dts/loongson-2k0500-ref.dts
> @@ -0,0 +1,88 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2023 Loongson Technology Corporation Limited
> + */
> +
> +/dts-v1/;
> +
> +#include "loongson-2k0500.dtsi"
> +
> +/ {
> + compatible = "loongson,ls2k0500-ref", "loongson,ls2k0500";
> + model = "Loongson-2K0500 Reference Board";
> +
> + aliases {
> + ethernet0 = &gmac0;
> + ethernet1 = &gmac1;
> + serial0 = &uart0;
> + };
> +
> + chosen {
> + stdout-path = "serial0:115200n8";
> + };
> +
> + memory@200000 {
> + device_type = "memory";
> + reg = <0x0 0x200000 0x0 0xee00000>, /* 238 MB at 2 MB */
> + <0x0 0x90000000 0x0 0x60000000>;
> + };
> +
> + reserved-memory {
> + #address-cells = <2>;
> + #size-cells = <2>;
> + ranges;
> +
> + linux,cma {
> + compatible = "shared-dma-pool";
> + reusable;
> + size = <0x0 0x2000000>;
> + linux,cma-default;
> + };
> + };
> +};
> +
> +&gmac0 {
> + status = "okay";
> +
> + phy-mode = "rgmii";
> + bus_id = <0x0>;
> +};
> +
> +&gmac1 {
> + status = "okay";
> +
> + phy-mode = "rgmii";
> + bus_id = <0x1>;
> +};
> +
> +&i2c0 {
> + status = "okay";
> +
> + #address-cells = <1>;
> + #size-cells = <0>;
> + eeprom@57{
> + compatible = "atmel,24c16";
> + reg = <0x57>;
> + pagesize = <16>;
> + };
> +};
> +
> +&ehci0 {
> + status = "okay";
> +};
> +
> +&ohci0 {
> + status = "okay";
> +};
> +
> +&sata {
> + status = "okay";
> +};
> +
> +&uart0 {
> + status = "okay";
> +};
> +
> +&rtc0 {
> + status = "okay";
> +};
> diff --git a/arch/loongarch/boot/dts/loongson-2k0500.dtsi b/arch/loongarch/boot/dts/loongson-2k0500.dtsi
> new file mode 100644
> index 000000000000..b45d1c217a6c
> --- /dev/null
> +++ b/arch/loongarch/boot/dts/loongson-2k0500.dtsi
> @@ -0,0 +1,254 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Copyright (C) 2023 Loongson Technology Corporation Limited
> + */
> +
> +/dts-v1/;
> +
> +#include <dt-bindings/interrupt-controller/irq.h>
> +
> +/ {
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + cpus {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + cpu-map {
> + cluster0 {
> + core0 {
> + cpu = <&cpu0>;
> + };
> + };
> + };
> +
> + cpu0: cpu@0 {
> + compatible = "loongson,la264";
> + device_type = "cpu";
> + reg = <0x0>;
> + clocks = <&cpu_clk>;
> + };
> + };
> +
> + cpu_clk: cpu-clk {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <500000000>;
> + };
> +
> + cpuintc: interrupt-controller {
> + compatible = "loongson,cpu-interrupt-controller";
> + #interrupt-cells = <1>;
> + interrupt-controller;
> + };
> +
> + bus@10000000 {
> + compatible = "simple-bus";
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + ranges = <0x0 0x10000000 0x0 0x10000000 0x0 0x10000000>,
> + <0x0 0x2000000 0x0 0x2000000 0x0 0x2000000>,
> + <0x0 0x20000000 0x0 0x20000000 0x0 0x10000000>,
> + <0x0 0x40000000 0x0 0x40000000 0x0 0x40000000>,
> + <0xfe 0x0 0xfe 0x0 0x0 0x40000000>;
ranges should be after compatible, just like reg is.
Anyway, that's a nit, so:
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Best regards,
Krzysztof
