Re: [PATCH net-next] net: dsa: mv88e6xxx: Add suspend/resume callbacks

From: Florian Fainelli
Date: Thu Jan 17 2019 - 13:00:59 EST

On 1/17/19 7:50 AM, Miquel Raynal wrote:
> Hi Andrew, Vivien,
> Vivien Didelot <vivien.didelot@xxxxxxxxx> wrote on Thu, 17 Jan 2019
> 10:46:41 -0500:
>> Hi,
>> On Wed, 16 Jan 2019 23:23:29 +0100, Andrew Lunn <andrew@xxxxxxx> wrote:
>>> Hi Florian
>>>> A possible approach could be to call the port_disable, port_enable
>>>> callbacks from dsa_slave_suspend() and dsa_slave_resume(), I might have
>>>> some patches doing that already somewhere.
>>> I expect it is also on Viviens TODO list, since this really could be
>>> in the core.
>> Indeed that is!
> So, shall I wait for Vivien's patches (adding port_disable/enable()
> in dsa_slave_suspend/resume()) and keep the driver as-is or do you want
> me to manually call port_disable/enable() from the mv88e6xxx driver?

Up to you guys, the only thing that I an tell you is that my platform
loses its register contents during suspend/resume, therefore you must
make sure the driver re-applies the entire switch configuration,
identical to how it was prior to suspend. If you need me to test
something, please holler.