linux-kernel - Re: [PATCH 1/2] riscv: dts: spacemit: add Ethernet and PDMA to OrangePi RV2

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Message-ID: <da4748ed-01f9-48a6-9939-320e83aa9eb0@rootcommit.com>
Date: Wed, 22 Oct 2025 18:54:13 +0000 (UTC)
From: Michael Opdenacker <michael.opdenacker@...tcommit.com>
To: Vivian Wang <wangruikang@...as.ac.cn>
Cc: michael.opdenacker@...tcommit.com, devicetree@...r.kernel.org,
 linux-riscv@...ts.infradead.org, spacemit@...ts.linux.dev,
 linux-kernel@...r.kernel.org, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Paul Walmsley <pjw@...nel.org>,
 Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>,
 Alexandre Ghiti <alex@...ti.fr>, Yixun Lan <dlan@...too.org>
Subject: Re: [PATCH 1/2] riscv: dts: spacemit: add Ethernet and PDMA to
 OrangePi RV2

Hi Vivian

Thanks for the guidance and help!

On 10/20/25 11:07, Vivian Wang wrote:
> Hi Michael,
>
> Thank you. I had meant to do this after v6.18-rc1 (which is now), but I
> didn't have this hardware to test.
Happy to help testing, if you have code to share :)
>
> On 10/17/25 18:02, michael.opdenacker@...tcommit.com wrote:
>> From: Michael Opdenacker <michael.opdenacker@...tcommit.com>
>>
>> Aligning with k1-bananapi-f3.dts
>>
>> Signed-off-by: Michael Opdenacker <michael.opdenacker@...tcommit.com>
>> ---
>>   .../boot/dts/spacemit/k1-orangepi-rv2.dts     | 50 +++++++++++++++++++
>>   1 file changed, 50 insertions(+)
>>
>> diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
>> index 337240ebb7b7..2a75ca93b499 100644
>> --- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
>> +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
>> @@ -33,6 +33,56 @@ led1 {
>>   	};
>>   };
>>   
>> +&eth0 {
> Please add eth0 and eth1 to /aliases so that U-Boot, udev, ... can
> recognize them. This is used by U-Boot to set the mac-address to the
> same value used in booting, and by (systemd) udev to set the interface name.
Done. I'll submit a V2 soon.
>
>> +	phy-handle = <&rgmii0>;
>> +	phy-mode = "rgmii-id";
>> +	pinctrl-names = "default";
>> +	pinctrl-0 = <&gmac0_cfg>;
>> +	rx-internal-delay-ps = <0>;
>> +	tx-internal-delay-ps = <0>;
> The hardware design of OPI-RV2 is not the same as BPI-F3, so the
> parameters here deserves some scruitiny. Same for eth1 below.
>
> I would appreciate at least iperf TCP tests in both directions on both
> ethernet ports. The expected speed should be at least 940 Mbit/sec - if
> it's much lower than that something is wrong.


Fortunately, the results are good. They are even better than the ones 
from the vendor kernel in OrangePi OS 😂.
I'll share the results in my V2 cover letter.
Thanks again
Michael.

-- 
Michael Opdenacker
Root Commit
Yocto Project and OpenEmbedded Training course - Learn by doing:
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