[PATCH v6 10/22] usb: dwc2: host: Properly set the HFIR
John.Youn at synopsys.com
Tue Feb 9 18:08:45 PST 2016
On 1/31/2016 2:19 PM, Doug Anderson wrote:
> On Sun, Jan 31, 2016 at 1:23 AM, Kever Yang <kever.yang at rock-chips.com> wrote:
>> On 01/29/2016 10:20 AM, Douglas Anderson wrote:
>>> According to the most up to date version of the dwc2 databook, the FRINT
>>> field of the HFIR register should be programmed to:
>>> * 125 us * (PHY clock freq for HS) - 1
>>> * 1000 us * (PHY clock freq for FS/LS) - 1
>> I got 3 version of dwc_otg databook, 2.74a, 2.94a and 3.10a,
>> all the doc describe the FrInt as:
> Can you check to see if you can get 3.30a (October 2015)?
>> * 125 us * (PHY clock freq for HS)
>> * 1000 us * (PHY clock freq for FS/LS)
>> Maybe John can help to check the design.
> Yes, this really needs John or someone at Synopsys.
The "- 1" is the correct value. The databook was corrected in 3.30a
and this applies to all previous versions of the core.
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