[U-Boot] [PATCH v3 1/2] imx: add macro to detect whether USB PHY is active

Eric Nelson eric at nelint.com
Wed Sep 13 21:14:17 UTC 2017


Hi Stefan,

On 09/13/2017 12:47 PM, Stefan Agner wrote:
> On 2017-09-13 02:19, Stefano Babic wrote:
>> Hi Eric, Stefan,
>>
>> On 13/09/2017 02:30, Eric Nelson wrote:
>>> Hi Stefan,
>>>
>>> I hate to be fussy about this, but I don't think I saw a reply
>>> to my earlier comment about the term "USB PHY".
>>>
>>> https://lists.denx.de/pipermail/u-boot/2017-September/305123.html
>>>
>>> Since i.MX6 SoCs have USB **Host** Phy's as well as the USB OTG Phy,
>>> this patch is a bit misleading.
>>>
>>> There's no reference to OTG anywhere in this or patch 2.
>>>
> 
> Hm, sorry I missed that.
> 
No worries. We're here to nag...

>>
>> To be consistent with the names, Eric is right. We have PHY0 for OTG and
>> PHY1 for Host. If you still want to use as name is_usbphy_active, then
>> this should take as parameter the phy number, or you switch to a "otg"
>> name to ensure that it is only for the OTG interface.
> 
> For the registers itself I followed the notation used in chapter 66 and
> arch/arm/include/asm/arch-mx6/imx-regs.h.
> 
> Renaming the function macro makes sense I agree.
> 
> The USB serial downloader only works with the OTG USB PHY anyway, so I
> will rename it. I like to have USB still in there, how about:
> 
> is_usbotg_phy_active()
> 

Perfect.


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