On Sun, May 10, 2020 at 12:37:14AM +0200, Michael Walle wrote:
> Use the generic cable tester functions from bcm-phy-lib to add cable
> tester support.
>
> 100m cable, A/B/C/D open:
> Cable test started for device eth0.
> Cable test completed for device eth0.
> Pair: Pair A, result: Open Circuit
> Pair: Pair B, result: Open Circuit
> Pair: Pair C, result: Open Circuit
> Pair: Pair D, result: Open Circuit
> Pair: Pair A, fault length: 106.60m
> Pair: Pair B, fault length: 103.32m
> Pair: Pair C, fault length: 104.96m
> Pair: Pair D, fault length: 106.60m
>
> 1m cable, A/B connected, pair C shorted, D open:
> Cable test started for device eth0.
> Cable test completed for device eth0.
> Pair: Pair A, result: OK
> Pair: Pair B, result: OK
> Pair: Pair C, result: Short within Pair
> Pair: Pair D, result: Open Circuit
> Pair: Pair C, fault length: 0.82m
> Pair: Pair D, fault length: 1.64m
>
> 1m cable, A/B connected, pair C shorted with D:
> Cable test started for device eth0.
> Cable test completed for device eth0.
> Pair: Pair A, result: OK
> Pair: Pair B, result: OK
> Pair: Pair C, result: Short to another pair
> Pair: Pair D, result: Short to another pair
> Pair: Pair C, fault length: 1.64m
> Pair: Pair D, fault length: 1.64m
>
> The granularity of the length measurement seems to be 82cm.
>
> Signed-off-by: Michael Walle <mich...@walle.cc>
Reviewed-by: Andrew Lunn <and...@lunn.ch>
Andrew
