Re: [PATCH v4] usb: xhci: allow imod-interval to be configurable

[Adam Wallis <awallis-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>]

Timur

On 12/4/2017 9:58 AM, Timur Tabi wrote:
> On 12/4/17 8:27 AM, Adam Wallis wrote:
>> If no interval is specified, the default of 40,000ns (IMOD=160) will be
>> used.
> 
> ...
> 
>> + - imod-interval-ns: default interrupt moderation interval is 5000ns
> 
> ...
> 
>> +  - imod-interval-ns: default interrupt moderation interval is 5000ns
> 
> ...
> 
>> +    xhci->imod_interval = 5000;
> 
> ...
> 
>> +    xhci->imod_interval = 40000;
> 
> ...
> 
>> +    xhci->imod_interval = 40000;
> 
> Is the default 5,000 or 40,000?  I can't tell.
> 
As noted in the patch description, xhci-plat devices will use a default of
40,000, while MTK devices will use a default of 5,000. This is also documented
in the probe for each relevant driver. This is further confirmed in the
description for each driver's binding TXT file.

Adam

-- 
Adam Wallis
Qualcomm Datacenter Technologies as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project.
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