linux-kernel - Re: [PATCH v3 7/7] riscv: dts: starfive: Add StarFive JH7110 VisionFive 2 board device tree

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Message-ID: <Y6Iob3csmKMl0rB/@spud>
Date:   Tue, 20 Dec 2022 21:26:07 +0000
From:   Conor Dooley <conor@...nel.org>
To:     Hal Feng <hal.feng@...rfivetech.com>
Cc:     linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org,
        Palmer Dabbelt <palmer@...belt.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Ben Dooks <ben.dooks@...ive.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>, Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Emil Renner Berthing <emil.renner.berthing@...onical.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 7/7] riscv: dts: starfive: Add StarFive JH7110
 VisionFive 2 board device tree

On Tue, Dec 20, 2022 at 09:12:47AM +0800, Hal Feng wrote:
> From: Emil Renner Berthing <kernel@...il.dk>
> 
> Add a minimal device tree for StarFive JH7110 VisionFive 2 board
> which has version A and version B. Support booting and basic
> clock/reset/pinctrl/uart drivers.
> 
> Signed-off-by: Emil Renner Berthing <kernel@...il.dk>
> Co-developed-by: Jianlong Huang <jianlong.huang@...rfivetech.com>
> Signed-off-by: Jianlong Huang <jianlong.huang@...rfivetech.com>
> Co-developed-by: Hal Feng <hal.feng@...rfivetech.com>
> Signed-off-by: Hal Feng <hal.feng@...rfivetech.com>
> ---
>  arch/riscv/boot/dts/starfive/Makefile         |   1 +
>  .../jh7110-starfive-visionfive-2-va.dts       |  13 ++
>  .../jh7110-starfive-visionfive-2-vb.dts       |  13 ++
>  .../jh7110-starfive-visionfive-2.dtsi         | 111 ++++++++++++++++++
>  4 files changed, 138 insertions(+)
>  create mode 100644 arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2-va.dts
>  create mode 100644 arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2-vb.dts
>  create mode 100644 arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> 
> diff --git a/arch/riscv/boot/dts/starfive/Makefile b/arch/riscv/boot/dts/starfive/Makefile
> index 0ea1bc15ab30..79e925a4a227 100644
> --- a/arch/riscv/boot/dts/starfive/Makefile
> +++ b/arch/riscv/boot/dts/starfive/Makefile
> @@ -1,2 +1,3 @@
>  # SPDX-License-Identifier: GPL-2.0
>  dtb-$(CONFIG_SOC_STARFIVE) += jh7100-beaglev-starlight.dtb
> +dtb-$(CONFIG_SOC_STARFIVE) += jh7110-starfive-visionfive-2-va.dtb jh7110-starfive-visionfive-2-vb.dtb

Could you rebase on top of v6.2-rc1 when you submit your next version
squash this in please (unless Emil hates it):
diff --git a/arch/riscv/boot/dts/starfive/Makefile b/arch/riscv/boot/dts/starfive/Makefile
index c38a9ade7f48..b3744420253a 100644
--- a/arch/riscv/boot/dts/starfive/Makefile
+++ b/arch/riscv/boot/dts/starfive/Makefile
@@ -1,3 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0
-dtb-$(CONFIG_SOC_STARFIVE) += jh7100-beaglev-starlight.dtb jh7100-starfive-visionfive-v1.dtb
-dtb-$(CONFIG_SOC_STARFIVE) += jh7110-starfive-visionfive-2-va.dtb jh7110-starfive-visionfive-2-vb.dtb
+dtb-$(CONFIG_SOC_STARFIVE) += jh7100-beaglev-starlight.dtb
+dtb-$(CONFIG_SOC_STARFIVE) += jh7100-starfive-visionfive-v1.dtb
+dtb-$(CONFIG_SOC_STARFIVE) += jh7110-starfive-visionfive-2-va.dtb
+dtb-$(CONFIG_SOC_STARFIVE) += jh7110-starfive-visionfive-2-vb.dtb

I'd rather have more, but easier to read lines than long ones.

> diff --git a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> new file mode 100644
> index 000000000000..c60280b89c73
> --- /dev/null
> +++ b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
> @@ -0,0 +1,111 @@
> +// SPDX-License-Identifier: GPL-2.0 OR MIT
> +/*
> + * Copyright (C) 2022 StarFive Technology Co., Ltd.
> + * Copyright (C) 2022 Emil Renner Berthing <kernel@...il.dk>
> + */
> +
> +/dts-v1/;
> +#include "jh7110.dtsi"
> +#include "jh7110-pinfunc.h"
> +#include <dt-bindings/gpio/gpio.h>
> +
> +/ {
> +	aliases {
> +		serial0 = &uart0;
> +	};
> +
> +	chosen {
> +		stdout-path = "serial0:115200n8";
> +	};
> +
> +	cpus {
> +		timebase-frequency = <4000000>;
> +	};
> +
> +	memory@...00000 {
> +		device_type = "memory";
> +		reg = <0x0 0x40000000 0x1 0x0>;

Is this a good idea when you have SKUs with 2, 4 & 8 GiB of DDR?

Anyways, I can't review this as I've got neither board nor
documentation, so with the above stuff sorted out:
Acked-by: Conor Dooley <conor.dooley@...rochip.com>
I'll not apply it until the clock binding header is in my tree.

Thanks,
Conor.


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