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From:   Heiko =?ISO-8859-1?Q?St=FCbner?= <heiko@sntech.de>
To:     Chen-Yu Tsai <wens@csie.org>,
        Jernej Skrabec <jernej.skrabec@gmail.com>,
        linux-sunxi@lists.linux.dev, Palmer Dabbelt <palmer@dabbelt.com>,
        Conor Dooley <conor@kernel.org>,
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        Samuel Holland <samuel@sholland.org>
Cc:     devicetree@vger.kernel.org,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Rob Herring <robh+dt@kernel.org>,
        Jisheng Zhang <jszhang@kernel.org>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Andre Przywara <andre.przywara@arm.com>,
        Samuel Holland <samuel@sholland.org>,
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        Stanislav Jakubek <stano.jakubek@gmail.com>
Subject: Re: [PATCH v2 04/12] riscv: dts: allwinner: Add the D1/D1s SoC devicetree
Date:   Mon, 28 Nov 2022 21:59:56 +0100
Message-ID: <3819214.ElGaqSPkdT@diego>
In-Reply-To: <20221125234656.47306-5-samuel@sholland.org>
References: <20221125234656.47306-1-samuel@sholland.org> <20221125234656.47306-5-samuel@sholland.org>
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Am Samstag, 26. November 2022, 00:46:48 CET schrieb Samuel Holland:
> D1 (aka D1-H), D1s (aka F133), R528, and T113 are a family of SoCs based
> on a single die, or at a pair of dies derived from the same design.
> 
> D1 and D1s contain a single T-HEAD Xuantie C906 CPU, whereas R528 and
> T113 contain a pair of Cortex-A7's. D1 and R528 are the full version of
> the chip with a BGA package, whereas D1s and T113 are low-pin-count QFP
> variants.
> 
> Because the original design supported both ARM and RISC-V CPUs, some
> peripherals are duplicated. In addition, all variants except D1s contain
> a HiFi 4 DSP with its own set of peripherals.
> 
> The devicetrees are organized to minimize duplication:
>  - Common perhiperals are described in sunxi-d1s-t113.dtsi
>  - DSP-related peripherals are described in sunxi-d1-t113.dtsi
>  - RISC-V specific hardware is described in sun20i-d1s.dtsi
>  - Functionality unique to the D1 variant is described in sun20i-d1.dtsi
> 
> The SOC_PERIPHERAL_IRQ macro handles the different #interrupt-cells
> values between the ARM (GIC) and RISC-V (PLIC) versions of the SoC.
> 
> Signed-off-by: Samuel Holland <samuel@sholland.org>

While the overall dt looks good to me, it seems others did find
some minor issues. But I can at least provide a

Tested-by: Heiko Stuebner <heiko.stuebner@vrull.eu>

as it could sucessfully boot the Nezha variant of boards for me.


Heiko