From mboxrd@z Thu Jan 1 00:00:00 1970 From: barrywasdell@gmail.com To: 9fans <9fans@9fans.net> Subject: PoE Support for Plan9 on RPI 4B/3B+? Message-Id: <15849909490.7E5BEBB6.71072@composer.9fans.topicbox.com> Date: Mon, 23 Mar 2020 15:15:49 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="15849909491.6b2d.71072" Content-Transfer-Encoding: 7bit Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: b4a152b4-6d3a-11ea-965b-9d879134e1fa --15849909491.6b2d.71072 Date: Mon, 23 Mar 2020 15:15:49 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable I have four Raspberry Pi model 4B boards and a Raspberry Pi model 3B+ board and would like to know whether or not Power over Ethernet (PoE) is supported by the Pi9 port. Has anyone attempted to power a Plan9 cluster/grid over PoE? What PoE network switches would you recommend? Were there any issues? Richard Miller? To be clear, a PoE network enables boards to be powered over an Ethernet network if a side-board (HAT) is connected. [1] A PoE network switch conforming to IEEE 802.3af delivers power through the each Pi's RJ45 network connector over Cat 5 cabling. [2] To my knowledge, neither the 9front kernel sources nor the documented list of supported hardware, specifically mentions PoE. [3] It seems the network switch and HAT negotiate power delivery independently of the kernel so I cannot think of a reason why Plan9 would not support powering this way. References [1]: https://www.raspberrypi.org/blog/introducing-power-over-ethernet-poe-h= at/ [2]: https://ieeexplore.ieee.org/document/1213877 [3]: https://9p.io/wiki/plan9/Supported_PC_hardware/index.html -- Barry Wasdell (bwasd)= --15849909491.6b2d.71072 Date: Mon, 23 Mar 2020 15:15:49 -0400 MIME-Version: 1.0 Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: quoted-printable
I have four Raspberry Pi model 4B boards an= d a Raspberry Pi model 3B+
board and would like to know wheth= er or not Power over Ethernet (PoE) is
supported by the Pi9 p= ort.

Has anyone attempted to power a Plan9 clu= ster/grid over PoE? What PoE
network switches would you recom= mend? Were there any issues? Richard
Miller?
To be clear, a PoE network enables boards to be powered over a= n Ethernet
network if a side-board (HAT) is connected. [1] A = PoE network switch
conforming to IEEE 802.3af delivers power = through the each Pi's RJ45
network connector over Cat 5 cabli= ng. [2]

To my knowledge, neither the 9front ke= rnel sources nor the documented
list of supported hardware, s= pecifically mentions PoE. [3] It seems the
network switch and= HAT negotiate power delivery independently of the
kernel so = I cannot think of a reason why Plan9 would not support
poweri= ng this way.

References
[1]: https://www.raspberrypi.org/blog/introducing-power-over-ethernet-po= e-hat/
[2]: https://ieeexplore.ieee.org/document/1213877
= [3]: = https://9p.io/wiki/plan9/Supported_PC_hardware/index.html

--
Barry Wasdell (bwasd)
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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=vMnMHR26bEqjq7tA3oThOwp9qFao8JCn1zzFPkSgw2w=; b=Q+mzk9f23fudgi2Mmk7zmHV9wUedPQ4QGsU/ZunoYnbu8OgOjOeWTLgbZExXVrugV0 7PIgIzctIF197EN2IkZ2mfTt9txgnxETaj5QD37UWdsoLk5O1N/EKazmzEezfY42Edut 1n31GUxBvhvz3hoSaZrxnPb6GeDgcpZDz+JH/+aIi8btlEKDGv08FU2pcaPi7hJboUkp xloScFprXhBirAzgFYM/Sz9fT5OPG9uaT+A8ol2kQbA5UBptboxhd+Zv6A9lpE+a8rj2 74wTpGSgqmng24AaejghOTc4HBHN0Xyk3CxLUC/Z3Bcq/W5E6p1R8xvfboYEyDMX3CPL vfvQ== X-Gm-Message-State: ANhLgQ3J/zCZobxctzvMPtgFrPpEjK+uDtxgZrilsE3YbM7aOhVulN60 AnbG1z9GENkfCqPV2y2hNGeoNdtRSbYIYuwnf0qPqW+5 X-Google-Smtp-Source: ADFU+vvgmnH/vE46lkQUpI8J2QTfYUkJyyqrgvpLgnN40o3C/O6XDiDbvl1AWGjz1yry+7oaBSQzKcEnDzSfKDuef/s= X-Received: by 2002:a67:7082:: with SMTP id l124mr15929159vsc.211.1584998552223; Mon, 23 Mar 2020 14:22:32 -0700 (PDT) MIME-Version: 1.0 References: <15849909490.7E5BEBB6.71072@composer.9fans.topicbox.com> In-Reply-To: <15849909490.7E5BEBB6.71072@composer.9fans.topicbox.com> From: Skip Tavakkolian Date: Mon, 23 Mar 2020 14:22:20 -0700 Message-ID: Subject: Re: [9fans] PoE Support for Plan9 on RPI 4B/3B+? To: 9fans <9fans@9fans.net> Content-Type: multipart/alternative; boundary="000000000000acc58f05a18c3baa" Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 6bd47978-6d4c-11ea-bbaf-a6c3ef070ef8 --000000000000acc58f05a18c3baa Content-Type: text/plain; charset="UTF-8" The PoE hat shouldn't need any software support. I don't have one, but it's basically a DC-DC converter. The Pi PoE hat has an Attiny processor for temperature sensing/fan operation. You can also use a PoE splitter (48V->5V/2.4A micro USB) which would work for all Pi's. -Skip On Mon, Mar 23, 2020 at 12:16 PM wrote: > I have four Raspberry Pi model 4B boards and a Raspberry Pi model 3B+ > board and would like to know whether or not Power over Ethernet (PoE) is > supported by the Pi9 port. > > Has anyone attempted to power a Plan9 cluster/grid over PoE? What PoE > network switches would you recommend? Were there any issues? Richard > Miller? > > To be clear, a PoE network enables boards to be powered over an Ethernet > network if a side-board (HAT) is connected. [1] A PoE network switch > conforming to IEEE 802.3af delivers power through the each Pi's RJ45 > network connector over Cat 5 cabling. [2] > > To my knowledge, neither the 9front kernel sources nor the documented > list of supported hardware, specifically mentions PoE. [3] It seems the > network switch and HAT negotiate power delivery independently of the > kernel so I cannot think of a reason why Plan9 would not support > powering this way. > > References > [1]: > https://www.raspberrypi.org/blog/introducing-power-over-ethernet-poe-hat/ > [2]: https://ieeexplore.ieee.org/document/1213877 > [3]: https://9p.io/wiki/plan9/Supported_PC_hardware/index.html > > -- > Barry Wasdell (bwasd) > *9fans * / 9fans / see discussions > + participants > + delivery options > Permalink > > --000000000000acc58f05a18c3baa Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
The PoE hat shouldn't need any software support. I don= 't have one, but it's basically a DC-DC converter. The Pi PoE hat h= as an Attiny processor for temperature sensing/fan operation.

You can also use a PoE splitter (48V->5V/2.4A micro USB) which wou= ld work for all Pi's.

-Skip


On Mon, Mar 23, 2020 at 12:16 PM <barrywasdell@gmail.com> wrote:
I have four Raspberry Pi model 4B boards and a Raspberry Pi model= 3B+
board and would like to know whether or not Power over E= thernet (PoE) is
supported by the Pi9 port.
Has anyone attempted to power a Plan9 cluster/grid over PoE? Wh= at PoE
network switches would you recommend? Were there any i= ssues? Richard
Miller?

To be cle= ar, a PoE network enables boards to be powered over an Ethernet
network if a side-board (HAT) is connected. [1] A PoE network switch
=
conforming to IEEE 802.3af delivers power through the each Pi= 9;s RJ45
network connector over Cat 5 cabling. [2]
<= div>
To my knowledge, neither the 9front kernel sources nor t= he documented
list of supported hardware, specifically mentio= ns PoE. [3] It seems the
network switch and HAT negotiate pow= er delivery independently of the
kernel so I cannot think of = a reason why Plan9 would not support
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a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=VQ3UNlQU/A5TrgGpOLdLjeXtzyJ6veXlEJCZFclYQLk=; b=ehfgwV9eoOS2lX2YsH16vFs49f+M5B2tShzaRKZgucfZLrWIgWDg7oeHndSDjpNL0h h9BBATT/6coTfsUGENW71P0P24J03iEoBSfzaq3DYtr60gUs3TxiAtxbusTwBIbZ4Cco jr+FUBmTICQeGxplMbSZtsNXqFqnz59noHPJmpVCKO81Q/5Vyw25iMYEQZARabCs2Thl YFr75Y5pBw/3kfwhaG4z8qOfr7Era3dfQG8EaGJdufLpLHlxA2/AoTIEiSR5WQiXOopO yf259MaZW+szIpMuDn52IOPWFwm6wDkBNqAFSBizrjrCCvaHw22WyVl6xi3W4Xk6EDpn gdpw== X-Gm-Message-State: ANhLgQ3LkL8UFEZeYi1z4uY0Vtwqy4UenSjrNsDU6wbAnzLd8ydQ6RJb LH+zz75sHVyDrFueVmJyEv2xJwqsNJZ3iORLKuOkpQ== X-Google-Smtp-Source: ADFU+vvq4NbEQVtEnk4fobq7pBHeE4nllIADjlv7ypHhCpCkVgE+Rj7J9tdGovDWWgGc9CCqImQm5CcvKaYiCvGMRZI= X-Received: by 2002:a9f:3381:: with SMTP id p1mr5897012uab.119.1585052174810; Tue, 24 Mar 2020 05:16:14 -0700 (PDT) MIME-Version: 1.0 References: <15849909490.7E5BEBB6.71072@composer.9fans.topicbox.com> In-Reply-To: From: Chris McGee Date: Tue, 24 Mar 2020 08:16:03 -0400 Message-ID: Subject: Re: [9fans] PoE Support for Plan9 on RPI 4B/3B+? To: 9fans <9fans@9fans.net> Content-Type: multipart/alternative; boundary="000000000000d4827605a198b7f5" Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 4601b1fc-6dc9-11ea-a186-a61ca9dd0f47 --000000000000d4827605a198b7f5 Content-Type: text/plain; charset="UTF-8" I can vouch for the fact that the Pi 1,2 and 3 work fine with a simple 12W 10/100 PoE network/power splitter. They work fine with 9front as it is mostly transparent to the OS as far as I can tell. Chris On Mon, Mar 23, 2020 at 5:23 PM Skip Tavakkolian wrote: > The PoE hat shouldn't need any software support. I don't have one, but > it's basically a DC-DC converter. The Pi PoE hat has an Attiny processor > for temperature sensing/fan operation. > > You can also use a PoE splitter (48V->5V/2.4A micro USB) which would work > for all Pi's. > > -Skip > > > On Mon, Mar 23, 2020 at 12:16 PM wrote: > >> I have four Raspberry Pi model 4B boards and a Raspberry Pi model 3B+ >> board and would like to know whether or not Power over Ethernet (PoE) is >> supported by the Pi9 port. >> >> Has anyone attempted to power a Plan9 cluster/grid over PoE? What PoE >> network switches would you recommend? Were there any issues? Richard >> Miller? >> >> To be clear, a PoE network enables boards to be powered over an Ethernet >> network if a side-board (HAT) is connected. [1] A PoE network switch >> conforming to IEEE 802.3af delivers power through the each Pi's RJ45 >> network connector over Cat 5 cabling. [2] >> >> To my knowledge, neither the 9front kernel sources nor the documented >> list of supported hardware, specifically mentions PoE. [3] It seems the >> network switch and HAT negotiate power delivery independently of the >> kernel so I cannot think of a reason why Plan9 would not support >> powering this way. >> >> References >> [1]: >> https://www.raspberrypi.org/blog/introducing-power-over-ethernet-poe-hat/ >> [2]: https://ieeexplore.ieee.org/document/1213877 >> [3]: https://9p.io/wiki/plan9/Supported_PC_hardware/index.html >> >> -- >> Barry Wasdell (bwasd) >> > *9fans * / 9fans / see discussions > + participants > + delivery options > Permalink > > --000000000000d4827605a198b7f5 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
I can vouch for the fact that the Pi 1,2 and 3 work f= ine with a simple 12W 10/100 PoE network/power splitter. They work fine wit= h 9front as it is mostly transparent to the OS as far as I can tell.
<= div>
Chris

On Mon, Mar 23, 2020 at 5:23 PM Skip Tavakkol= ian <skip.tavakkolian@gmai= l.com> wrote:
The PoE hat shouldn't need any software support. = I don't have one, but it's basically a DC-DC converter. The Pi PoE = hat has an Attiny processor for temperature sensing/fan operation.

=
You can also use a PoE splitter (48V->5V/2.4A micro USB) whic= h would work for all Pi's.

-Skip

On Mon, Mar 23, 2020 at 12:16 PM <barrywasdell@gmail.com> wrote:
I hav= e four Raspberry Pi model 4B boards and a Raspberry Pi model 3B+
<= div>board and would like to know whether or not Power over Ethernet (PoE) i= s
supported by the Pi9 port.

Has= anyone attempted to power a Plan9 cluster/grid over PoE? What PoE
network switches would you recommend? Were there any issues? Richard<= br>
Miller?

To be clear, a PoE netwo= rk enables boards to be powered over an Ethernet
network if a= side-board (HAT) is connected. [1] A PoE network switch
conf= orming to IEEE 802.3af delivers power through the each Pi's RJ45
network connector over Cat 5 cabling. [2]

<= div>To my knowledge, neither the 9front kernel sources nor the documented
list of supported hardware, specifically mentions PoE. [3] It = seems the
network switch and HAT negotiate power delivery ind= ependently of the
kernel so I cannot think of a reason why Pl= an9 would not support
powering this way.
9fans / 9fans / see discu= ssions + participants + delivery options Permalink
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