[linux-sunxi] [PATCH 1/4] ARM: dts: sunxi: Add regulator-boot-on to usb host port regulator nodes

Julian Calaby julian.calaby at gmail.com
Mon Jun 22 07:54:41 PDT 2015


Hi Hans,

On Mon, Jun 22, 2015 at 6:28 PM, Hans de Goede <hdegoede at redhat.com> wrote:
> Hi,
>
> On 22-06-15 02:30, Julian Calaby wrote:
>>
>> Hi Hans,
>>
>> On Sun, Jun 21, 2015 at 1:40 AM, Hans de Goede <hdegoede at redhat.com>
>> wrote:
>>>
>>> u-boot will have turned on the power to the usb host ports, so mark them
>>> as regulator-boot-on, this stops the power on the ports from temporarily
>>> getting turned off during boot, causing issues with e.g. usb powered
>>> harddisks.
>>
>>
>> Stupid question: shouldn't u-boot set this property?
>
>
> We could make u-boot set this property but that will require a lot of code
> on
> u-boot's side which is simply not there atm. And traditionally this property
> is is simply a part of the dts files as shipped with the kernel.

Fair enough.

Thanks,

-- 
Julian Calaby

Email: julian.calaby at gmail.com
Profile: http://www.google.com/profiles/julian.calaby/



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