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SubjectRe: [PATCH v5 net-next 00/12] net: ethernet: ti: introduce new cpsw switchdev based driver
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On 11/11/2019 19:08, Tony Lindgren wrote:
> * Grygorii Strashko <grygorii.strashko@ti.com> [191109 15:16]:
>> Hi Tony,
>>
>> On 24/10/2019 19:05, Tony Lindgren wrote:
>>> Hi,
>>>
>>> * Grygorii Strashko <grygorii.strashko@ti.com> [191024 10:10]:
>>>> This the RFC v5 which introduces new CPSW switchdev based driver which is
>>>> operating in dual-emac mode by default, thus working as 2 individual
>>>> network interfaces. The Switch mode can be enabled by configuring devlink driver
>>>> parameter "switch_mode" to 1/true:
>>>> devlink dev param set platform/48484000.ethernet_switch \
>>>> name switch_mode value 1 cmode runtime
>>>
>>> Just wondering about the migration plan.. Is this a replacement
>>> driver or used in addition to the old driver?
>>>
>>
>> Sry, I've missed you mail.
>>
>> As it's pretty big change the idea is to keep both drivers at least for sometime.
>> Step 1: add new driver and enable it on one platform. Do announcement.
>> Step 2: switch all one-port and dual mac drivers to the new driver
>> Step 3: switch all other platform to cpsw switchdev and deprecate old driver.
>
> OK sounds good to me. So for the dts changes, we keep the old binding
> and just add a new module there?

yes, in general.
As you can see Patch 11 I've rearranged cpsw nodes between boards so cpsw_new is enabled
only on one board. But, Am5/dr7 board are good candidates to enable cpsw_new in batch as
the have only dual_mac default cfg.

>
> Or do you also have to disable some parts of the old dts?

it will be the case for am3/am5 most probably.

--
Best regards,
grygorii

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