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Date:   Thu, 10 Sep 2020 13:01:38 -0700
From:   Jakub Kicinski <>
To:     Oded Gabbay <>
Cc:,,,,, Omer Shpigelman <>
Subject: Re: [PATCH 12/15] habanalabs/gaudi: add debugfs entries for the NIC

On Thu, 10 Sep 2020 19:11:23 +0300 Oded Gabbay wrote:
> From: Omer Shpigelman <>
> Add several debugfs entries to help us debug the NIC engines and ports and
> also the communication layer of the DL training application that use them.
> There are eight new entries. Detailed description is in the documentation
> file but here is a summary:
> - nic_mac_loopback: enable mac loopback mode per port
> - nic_ports_status: print physical connection status per port
> - nic_pcs_fail_time_frame: configure windows size for measuring pcs
>                            failures
> - nic_pcs_fail_threshold: configure pcs failures threshold for
>                           reconfiguring the link
> - nic_pam4_tx_taps: configure PAM4 TX taps
> - nic_polarity: configure polarity for NIC port lanes
> - nic_check_link: configure whether to check the PCS link periodically
> - nic_phy_auto_neg_lpbk: enable PHY auto-negotiation loopback
> Signed-off-by: Omer Shpigelman <>
> Reviewed-by: Oded Gabbay <>
> Signed-off-by: Oded Gabbay <>

debugfs configuration interfaces are not acceptable in netdev.

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