linux-kernel - Re: [PATCH 3/4] riscv: dts: spacemit: add Gigabit Ethernet and PDMA to OrangePi R2S

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Message-ID: <20251110005213-GYA1651402@gentoo.org>
Date: Mon, 10 Nov 2025 08:52:13 +0800
From: Yixun Lan <dlan@...too.org>
To: michael.opdenacker@...tcommit.com
Cc: 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>,
	devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org,
	spacemit@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] riscv: dts: spacemit: add Gigabit Ethernet and PDMA
 to OrangePi R2S

Hi Michael,

Please squash patch 2-4, see previous discussion here [1]
Once you've done this, you could put additional info inside cover letter

Link: https://lore.kernel.org/all/20251010-confider-raven-0ad7a810e5de@spud/ [1]

On 22:30 Sun 09 Nov     , michael.opdenacker@...tcommit.com wrote:
> From: Michael Opdenacker <michael.opdenacker@...tcommit.com>
> 
> The OrangePi R2S board includes two RGMII ethernet ports
> supporting Gigabit Ethernet operation.
> 
> They have an external Motorcomm YT8531C PHY attached,
> the PHY uses GPIO for reset pin control. 
..
> Their description
> was reused from the DTS from the OrangePi RV2 board.
Suggest to drop this, useless and even make people confused.

> 
> Enable PDMA for the SpacemiT K1-based SoC.
> 
> Signed-off-by: Michael Opdenacker <michael.opdenacker@...tcommit.com>
> 
> ---
> 
> tests on eth0
> -------------
> 
> root@...ngepi-rv2-mainline:~# iperf3 -c 172.24.0.1
> Connecting to host 172.24.0.1, port 5201
> [ 5] local 172.24.0.2 port 51354 connected to 172.24.0.1 port 5201
> [ ID] Interval Transfer Bitrate Retr Cwnd
> [ 5] 0.00-1.00 sec 113 MBytes 947 Mbits/sec 0 395 KBytes
> [ 5] 1.00-2.00 sec 113 MBytes 945 Mbits/sec 0 395 KBytes
> [ 5] 2.00-3.00 sec 112 MBytes 936 Mbits/sec 0 395 KBytes
> [ 5] 3.00-4.00 sec 112 MBytes 942 Mbits/sec 0 395 KBytes
> [ 5] 4.00-5.00 sec 112 MBytes 941 Mbits/sec 0 395 KBytes
> [ 5] 5.00-6.00 sec 112 MBytes 940 Mbits/sec 0 409 KBytes
> [ 5] 6.00-7.00 sec 113 MBytes 948 Mbits/sec 0 409 KBytes
> [ 5] 7.00-8.00 sec 112 MBytes 940 Mbits/sec 0 409 KBytes
> [ 5] 8.00-9.00 sec 112 MBytes 941 Mbits/sec 0 414 KBytes
> [ 5] 9.00-10.03 sec 113 MBytes 919 Mbits/sec 0 414 KBytes
> - - - - - - - - - - - - - - - - - - - - - - - - -
> [ ID] Interval Transfer Bitrate Retr
> [ 5] 0.00-10.03 sec 1.10 GBytes 940 Mbits/sec 0 sender
> [ 5] 0.00-10.04 sec 1.10 GBytes 939 Mbits/sec receiver
> 
> iperf Done.
..

-- 
Yixun Lan (dlan)