[PATCH v1 08/23] phy: marvell: add RX training command
Stefan Roese
sr at denx.de
Thu Apr 8 10:46:00 CEST 2021
Hi Marek,
On 24.03.21 18:46, Marek Behun wrote:
> On Wed, 24 Mar 2021 15:06:34 +0100
> Stefan Roese <sr at denx.de> wrote:
>
>> From: Igal Liberman <igall at marvell.com>
>>
>> This patch adds support for running RX training using new command called
>> "rx_training"
>> Usage:
>> rx_training - rx_training <cp id> <comphy id>
>>
>> RX training allows to improve link quality (for SFI mode)
>> by running training sequence between us and the link partner,
>> this allows to reach better link quality then using static configuration.
>
> PLEASE do not add another vendor specific command. PLEASE !
Why not? We have many vendor specific commands in U-Boot. We also have
board specific commands as well.
I agree that generic / common commands should be implemented in a way,
that they can be used by all platforms. But this is not possible or
for all commands. And this command does not look very "generic" at least
not to me.
> Create a generic command, with name 'ddr' or something, with API and
> documentation.
>
> Also the name "rx_training" is the worst thing ever. It could be
> interpreted as training for RX on ethernet PHY, or even on UART.
"RX" is of course not very specific, I agree. AFAICT, only
comphy_cp110_sfi_rx_training() is supported (right now). Not sure if
this will be extended at a later time. Perhaps using something like
"comphy_rx_training" would be more suitable?
Thanks,
Stefan
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