`POE`

Configure PowerOverEthernet controllers.

Access LTC4258 Power-over-Ethernet controllers on an I2C bus managed by the SDK. This is for Broadcom reference boards; a Trident 3 SONiC switch has no such controller, and the command prints cannot open I2C device ….

Written POE <poe_num> <op> [<address> [<data>]] with <poe_num> 1–6. The operation is case-sensitive and must be typed in full: dump, r, status, clear, rescan or w. rescan is not in the built-in help.

Safety: dump, r and status are read-only; clear, rescan and w write to the controller.

Unvalidated

drivshell> poe 1 status

Unvalidated — Rescan (not in the built-in help)

drivshell> poe 1 rescan

POE dump

Written POE <poe_num> dump. Print all controller registers. Read-only.

Unvalidated

drivshell> poe 1 dump

POE status

Written POE <poe_num> status. Print the port status. Read-only.

Unvalidated

drivshell> poe 2 status

POE clear

Written POE <poe_num> clear. Clear the interrupt bits. Writes to the controller.

Unvalidated

drivshell> poe 1 clear

POE rescan

Written POE <poe_num> rescan. Ask the driver to rescan. Not in the built-in help.

Unvalidated

drivshell> poe 1 rescan

POE r <address>

Written POE <poe_num> r <address>. Read one register; prints <dev>[0x<addr>] = 0x<val>. Read-only.

Unvalidated

drivshell> poe 1 r 0x0

POE w <address> <data>

Written POE <poe_num> w <address> <data>. Write one register; prints 0x<val> => <dev>[0x<addr>]. Writes to the controller.

Unvalidated

drivshell> poe 1 w 0x12 0x0

Built-in help

Usages:
           poe poe_num dump
               - display all registers on LTC4258[poe_num].
           poe poe_num status
               - display port status on LTC4258[poe_num].
           poe poe_num clear
               - clear interrupt bits on LTC4258[poe_num].
           poe poe_num r <address>
               - read LTC4258[poe_num] register at address.
           poe poe_num w <address> <data>
               - write LTC4258[poe_num]  register data at address.
In all cases, poe_num = [1..6]. MuxSel may also be necessary.

POE

`POE`