[PATCH v5 2/8] board: boston-riscv: Add initial support for P8700 Boston board

[Conor Dooley]

On Wed, Dec 24, 2025 at 03:45:47PM +0000, Uros Stajic wrote:
> From: Chao-ying Fu <cfu at mips.com>
> 
> Implement initial board-level support for the P8700 Boston SoC.
> 
> Signed-off-by: Chao-ying Fu <cfu at mips.com>
> Signed-off-by: Uros Stajic <uros.stajic at htecgroup.com>
> diff --git a/arch/riscv/dts/boston-p8700.dts b/arch/riscv/dts/boston-p8700.dts
> new file mode 100644
> index 00000000000..f27ebeda4a2
> --- /dev/null
> +++ b/arch/riscv/dts/boston-p8700.dts
> @@ -0,0 +1,264 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright (C) 2021, Chao-ying Fu <cfu at mips.com>
> + */
> +
> +/dts-v1/;
> +
> +#include <dt-bindings/clock/boston-clock.h>
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/interrupt-controller/irq.h>
> +#include <dt-bindings/interrupt-controller/mips-gic.h>
> +
> +/ {
> +	#address-cells = <1>;
> +	#size-cells = <1>;
> +	model = "p8700";
> +	compatible = "img,boston";

This is not a unique id, this is used by a mips mips board already.
I think the one that is being used in opensbi is mips,p8700-boston.

> +
> +	aliases {
> +		serial0 = &uart0;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +
> +	cpus {
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +		timebase-frequency = <25000000>;
> +
> +		cpu at 0 {
> +			device_type = "cpu";
> +			compatible = "riscv";

There's a specific cpu compatible for this now. "riscv" in isolation is
only for qemu etc. OpenSBI actually wants the specific compatible.

Can this be sent to Linux, so it can get more eyeballs on the dts, and use
OF_UPSTREAM to import it to U-Boot?

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