linux-kernel - Re: [-next v1 1/1] riscv: dts: starfive: jh7110: Fix GMAC configuration

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Message-ID: <37f5c947-5bba-0add-4805-1ce800f99aff@starfivetech.com>
Date:   Thu, 10 Aug 2023 18:54:39 +0800
From:   Guo Samin <samin.guo@...rfivetech.com>
To:     Conor Dooley <conor.dooley@...rochip.com>
CC:     <linux-kernel@...r.kernel.org>, <linux-riscv@...ts.infradead.org>,
        <devicetree@...r.kernel.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        "Emil Renner Berthing" <emil.renner.berthing@...onical.com>,
        Conor Dooley <conor@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Hal Feng <hal.feng@...rfivetech.com>
Subject: Re: [-next v1 1/1] riscv: dts: starfive: jh7110: Fix GMAC
 configuration



on 2023/8/10 18:48:38, Conor Dooley wrote:
> On Thu, Aug 10, 2023 at 03:46:46PM +0800, Samin Guo wrote:
>> Fixed configuration to improve the speed of TCP RX.
>>
>> Before:
>>   # iperf3 -s
>>   -----------------------------------------------------------
>>   Server listening on 5201 (test #1)
>>   -----------------------------------------------------------
>>   Accepted connection from 192.168.1.4, port 47604
>>   [  5] local 192.168.1.3 port 5201 connected to 192.168.1.4 port 47612
>>   [ ID] Interval           Transfer     Bitrate
>>   [  5]   0.00-1.00   sec  36.3 MBytes   305 Mbits/sec
>>   [  5]   1.00-2.00   sec  35.6 MBytes   299 Mbits/sec
>>   [  5]   2.00-3.00   sec  36.5 MBytes   306 Mbits/sec
>>   [  5]   3.00-4.00   sec  36.5 MBytes   306 Mbits/sec
>>   [  5]   4.00-5.00   sec  35.7 MBytes   300 Mbits/sec
>>   [  5]   5.00-6.00   sec  35.4 MBytes   297 Mbits/sec
>>   [  5]   6.00-7.00   sec  37.1 MBytes   311 Mbits/sec
>>   [  5]   7.00-8.00   sec  35.6 MBytes   298 Mbits/sec
>>   [  5]   8.00-9.00   sec  36.4 MBytes   305 Mbits/sec
>>   [  5]   9.00-10.00  sec  36.3 MBytes   304 Mbits/sec
>>   - - - - - - - - - - - - - - - - - - - - - - - - -
>>   [ ID] Interval           Transfer     Bitrate
>>   [  5]   0.00-10.00  sec   361 MBytes   303 Mbits/sec        receiver
>>
>> After:
>>   # iperf3 -s
>>   -----------------------------------------------------------
>>   Server listening on 5201 (test #1)
>>   -----------------------------------------------------------
>>   Accepted connection from 192.168.1.4, port 47710
>>   [  5] local 192.168.1.3 port 5201 connected to 192.168.1.4 port 47720
>>   [ ID] Interval           Transfer     Bitrate
>>   [  5]   0.00-1.00   sec   111 MBytes   932 Mbits/sec
>>   [  5]   1.00-2.00   sec   111 MBytes   934 Mbits/sec
>>   [  5]   2.00-3.00   sec   111 MBytes   934 Mbits/sec
>>   [  5]   3.00-4.00   sec   111 MBytes   934 Mbits/sec
>>   [  5]   4.00-5.00   sec   111 MBytes   934 Mbits/sec
>>   [  5]   5.00-6.00   sec   111 MBytes   935 Mbits/sec
>>   [  5]   6.00-7.00   sec   111 MBytes   934 Mbits/sec
>>   [  5]   7.00-8.00   sec   111 MBytes   935 Mbits/sec
>>   [  5]   8.00-9.00   sec   111 MBytes   934 Mbits/sec
>>   [  5]   9.00-10.00  sec   111 MBytes   934 Mbits/sec
>>   [  5]  10.00-10.00  sec   167 KBytes   933 Mbits/sec
>>   - - - - - - - - - - - - - - - - - - - - - - - - -
>>   [ ID] Interval           Transfer     Bitrate
>>   [  5]   0.00-10.00  sec  1.09 GBytes   934 Mbits/sec        receiver
>>
>> Reviewed-by: Hal Feng <hal.feng@...rfivetech.com>
>> Signed-off-by: Samin Guo <samin.guo@...rfivetech.com>
> 
> This is
> Fixes: 1ff166c97972 ("riscv: dts: starfive: jh7110: Add ethernet device nodes")
> right?

Hi Conor，

Yes. There is an issue with the configuration of the 1ff166c97972 that affects the speed of the GMAC TCP RX.

Best regards,
Samin