lkml.org 
[lkml]   [2020]   [May]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH net-next v2 3/4] dt-bindings: net: Add RGMII internal delay for DP83869
From
Date
Andrew/Florian

On 5/20/20 11:43 AM, Andrew Lunn wrote:
>> I am interested in knowing where that is documented.  I want to RTM I
>> grepped for a few different words but came up empty
> Hi Dan
>
> It probably is not well documented, but one example would be
>
> Documentation/devicetree/bindings/net/ethernet-controller.yaml
>
> says:
>
> # RX and TX delays are added by the MAC when required
> - rgmii
>
> # RGMII with internal RX and TX delays provided by the PHY,
> # the MAC should not add the RX or TX delays in this case
> - rgmii-id
>
> # RGMII with internal RX delay provided by the PHY, the MAC
> # should not add an RX delay in this case
> - rgmii-rxid
>
> # RGMII with internal TX delay provided by the PHY, the MAC
> # should not add an TX delay in this case
>
> Andrew

OKI I read that.  I also looked at a couple other drivers too.

I am wondering if rx-internal-delay and tx-internal-delay should become
a common property like tx/rx fifo-depth

And properly document how to use it or at least the expectation on use.

Dan

\
 
 \ /
  Last update: 2020-05-20 19:22    [W:0.882 / U:0.180 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site