From: Andrew Lunn <andrew@lunn.ch>
To: Selvamani Rajagopal <Selvamani.Rajagopal@onsemi.com>
Cc: Rob Herring <robh@kernel.org>,
Piergiorgio Beruto <Pier.Beruto@onsemi.com>,
"andrew+netdev@lunn.ch" <andrew+netdev@lunn.ch>,
"davem@davemloft.net" <davem@davemloft.net>,
"edumazet@google.com" <edumazet@google.com>,
"kuba@kernel.org" <kuba@kernel.org>,
"pabeni@redhat.com" <pabeni@redhat.com>,
"krzk+dt@kernel.org" <krzk+dt@kernel.org>,
"conor+dt@kernel.org" <conor+dt@kernel.org>,
"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH net-next 1/5] dt-bindings: net: add onsemi's TS2500/NCN26010 10BASE-T1S MACPHY
Date: Tue, 5 May 2026 21:01:38 +0200 [thread overview]
Message-ID: <69cfb4a7-93b8-4ea7-b4c8-422f19419fe5@lunn.ch> (raw)
In-Reply-To: <CY8PR02MB9249B2450E2931FD5533F46E833E2@CY8PR02MB9249.namprd02.prod.outlook.com>
> > Since it is a 10Mbps media, if the SPI speed is lower than 15MHz,
> > maybe it cannot keep up with the media? But this clock speed on its
> > own is not the deciding factor, there could be other users of the SPI
> > bus. I would expect the driver and device to keep working if the SPI
> > bus is saturated, just not give the full 10Mbps. And it would also be
> > a good test the device and driver do work correctly when the bus is
> > saturated.
>
>
> I should have given more information. If we configure SPI at lower
> speed, it may start losing frames as it can't sustain the PHY's
> speed. Please let me know If I should remove it.
So it is not really a requirement. Please add a comment that at speed
of at least 15MHz is recommended in order to obtain line rate
performance.
Andrew
next prev parent reply other threads:[~2026-05-05 19:01 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-01 19:15 [PATCH net-next 1/5] dt-bindings: net: add onsemi's TS2500/NCN26010 10BASE-T1S MACPHY Selvamani Rajagopal
2026-05-01 20:36 ` Rob Herring (Arm)
2026-05-01 21:21 ` Selvamani Rajagopal
2026-05-05 13:44 ` Rob Herring
2026-05-05 15:11 ` Selvamani Rajagopal
2026-05-05 17:27 ` Andrew Lunn
2026-05-05 17:33 ` Selvamani Rajagopal
2026-05-05 19:01 ` Andrew Lunn [this message]
2026-05-05 19:05 ` Selvamani Rajagopal
[not found] ` <DM8PR02MB8021DB41F30E52D3DED9E7329D3E2@DM8PR02MB8021.namprd02.prod.outlook.com>
2026-05-05 21:25 ` Andrew Lunn
2026-05-06 19:20 ` Selvamani Rajagopal
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