[U-Boot] [PATCH 07/16] usb: hub: Translate USB 3.0 hub port status into old version

[Marek Vasut]

On 06/28/2017 10:28 AM, Bin Meng wrote:
> Hi Marek,
> 
> On Tue, Jun 27, 2017 at 7:57 AM, Bin Meng <bmeng.cn at gmail.com> wrote:
>> Hi Marek,
>>
>> On Tue, Jun 27, 2017 at 2:06 AM, Marek Vasut <marex at denx.de> wrote:
>>> On 06/24/2017 03:53 AM, Bin Meng wrote:
>>>> Hi Marek,
>>>>
>>>> On Sat, Jun 24, 2017 at 1:59 AM, Marek Vasut <marex at denx.de> wrote:
>>>>> On 06/23/2017 11:54 AM, Bin Meng wrote:
>>>>>> USB 3.0 hub port status field has different bit positions from 2.0
>>>>>> hubs. Since U-Boot only understands the old version, translate the
>>>>>> new one into the old one.
>>>>>
>>>>> This is quite hairy. I'd rather see some protocol version agnostic flag
>>>>> field rather than patching the wPortStatus and co.
>>>>>
>>>>
>>>> I am not sure how do do that in a clean way. If we return the raw 3.0
>>>> hub port status data, that means we need change lot of hub codes here
>>>> and there to do different parsing.
>>>
>>> How does Linux handle this?
>>
>> Looks Linux is doing different parsing depending on hub is 3.0 or 2.0,
>> at least for the power bit that I was just looking at. Do you want to
>> do that?
> 
> OK, I will do something similar like Linux in v2.

Thanks

-- 
Best regards,
Marek Vasut