linux-kernel - Re: [PATCH v4 4/6] riscv: dts: starfive: Add common board dtsi for VisionFive 2 Lite variants

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Message-ID:
 <AM7P189MB1009B900894F02496519B2F4E3A7A@AM7P189MB1009.EURP189.PROD.OUTLOOK.COM>
Date: Fri, 5 Dec 2025 08:23:00 +0100
From: Maud Spierings <maud_spierings@...mail.com>
To: linux.amoon@...il.com
Cc: aou@...s.berkeley.edu, bhelgaas@...gle.com, broonie@...nel.org,
 conor+dt@...nel.org, devicetree@...r.kernel.org, e@...eshell.de,
 emil.renner.berthing@...onical.com, hal.feng@...rfivetech.com,
 heinrich.schuchardt@...onical.com, krzk+dt@...nel.org,
 kwilczynski@...nel.org, lgirdwood@...il.com, linux-kernel@...r.kernel.org,
 linux-pci@...r.kernel.org, linux-riscv@...ts.infradead.org,
 lpieralisi@...nel.org, mani@...nel.org, palmer@...belt.com, pjw@...nel.org,
 rafael@...nel.org, robh@...nel.org, viresh.kumar@...aro.org,
 sandie.cao@...pcomputing.io
Subject: Re: [PATCH v4 4/6] riscv: dts: starfive: Add common board dtsi for
 VisionFive 2 Lite variants

> 
> Hi Hal,
> 
> On Tue, 25 Nov 2025 at 13:27, Hal Feng <hal.feng@...rfivetech.com> wrote:
>>
>> Add a common board dtsi for use by VisionFive 2 Lite and
>> VisionFive 2 Lite eMMC.
>>
>> Acked-by: Emil Renner Berthing <emil.renner.berthing@...onical.com>
>> Tested-by: Matthias Brugger <mbrugger@...e.com>
>> Signed-off-by: Hal Feng <hal.feng@...rfivetech.com>
>> ---
>>  .../jh7110-starfive-visionfive-2-lite.dtsi    | 161 ++++++++++++++++++
>>  1 file changed, 161 insertions(+)
>>  create mode 100644 arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2-lite.dtsi
>>
>> diff --git a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2-lite.dtsi b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2-lite.dtsi
>> new file mode 100644
>> index 000000000000..f8797a666dbf
>> --- /dev/null
>> +++ b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2-lite.dtsi
>> @@ -0,0 +1,161 @@
>> +// SPDX-License-Identifier: GPL-2.0 OR MIT
>> +/*
>> + * Copyright (C) 2025 StarFive Technology Co., Ltd.
>> + * Copyright (C) 2025 Hal Feng <hal.feng@...rfivetech.com>
>> + */
>> +
>> +/dts-v1/;
>> +#include "jh7110-common.dtsi"
>> +
>> +/ {
>> +       vcc_3v3_pcie: regulator-vcc-3v3-pcie {
>> +               compatible = "regulator-fixed";
>> +               enable-active-high;
>> +               gpio = <&sysgpio 27 GPIO_ACTIVE_HIGH>;
>> +               regulator-name = "vcc_3v3_pcie";
>> +               regulator-min-microvolt = <3300000>;
>> +               regulator-max-microvolt = <3300000>;
>> +       };
>> +};
> 
> The vcc_3v3_pcie regulator node is common to all JH7110 development boards.
> and it is enabled through the PWREN_H signal (PCIE0_PWREN_H_GPIO32).
> 
> VisionFive 2 Product Design Schematics below
> [1] https://doc-en.rvspace.org/VisionFive2/PDF/SCH_RV002_V1.2A_20221216.pdf
> 
> Mars_Hardware_Schematics
> [2] https://github.com/milkv-mars/mars-files/blob/main/Mars_Hardware_Schematics/Milk-V_Mars_SCH_V1.21_2024-0510.pdf
> 

I'm not sure if this also holds true for the deepcomputing fml13v01, 
sadly as far as I know there is no schematics available for that.

the downstream dts [3] doesn't contain any evidence of it, neither does 
upstream.

I wouldn't be surprised if it is there but just not present in the dts, 
but it may be nice to get some feedback from someone at deepcomputing.

adding Sandie Cao who did some of the upstreaming work.

Link: 
https://github.com/DC-DeepComputing/fml13v01-linux/blob/97c64fe2832b6826914b6da7aa4febcdd4d3d444/arch/riscv/boot/dts/starfive/jh7110-deepcomputing-fml13v01.dts#L416-L432 
[3]

kind regards,
Maud