[PATCH] [net,v2] net: wwan: t7xx: add PM_AUTOSUSPEND_MS_BY_DW5933E for Dell DW5933e

[Andrew Lunn]

> Hi Andrew,
> 
> The chip of Fibocom FM350 is MTK T7XX,
> It is the same chip as our device.
> 
> We tested the Fibocom FM350 and It had the same issue as our device.
> The following tests use the same environment and steps:
> a. Make data call to connect Internet
> b. No data is transferred to the Internet and wait one minute.
> c. use test script to capture and count power_state until one minute.
> 
> Result:
> 1. When autosuspend_delay_ms is 20000,
> Our device's d3_cold time is 0%
> Fibocom FM350's d3_cold time 0%
> 
> 2. When autosuspend_delay_ms is 5000,
> Our device's d3_cold time is 80%
> Fibocom FM350's d3_cold time 60%
> 
> So this problem is a common problem.
> Should I remove PM_AUTOSUSPEND_MS_BY_DW5933E,
> and modify PM_AUTOSUSPEND_MS to 5000 at my patch?

A sample of two is not great, but does suggest there is nothing
special about the DW5933E, and all users can benefit from this change.

Please do change PM_AUTOSUSPEND_MS.

       Andrew