[U-Boot] [PATCH v2 1/2] usb: ehci: exynos: set/reset hsic phys

[Minkyu Kang <mk7.kang@samsung.com>]

On 07/01/14 00:45, Marek Vasut wrote:
> On Monday, January 06, 2014 at 07:20:20 AM, Inderpal Singh wrote:
>> On 4 January 2014 12:46, Marek Vasut <marex@denx.de> wrote:
>>> On Friday, January 03, 2014 at 06:03:47 AM, Inderpal Singh wrote:
>>>> Hi Marek,
>>>>
>>>> Thanks for the review.
>>>>
>>>> On 3 January 2014 06:24, Marek Vasut <marex@denx.de> wrote:
>>>>> On Thursday, January 02, 2014 at 10:41:58 AM, Inderpal Singh wrote:
>>>>>> From: Inderpal Singh <chander.kashyap@linaro.org>
>>>>>>
>>>>>> The controller has 3 ports. The port0 is for USB 2.0 Phy, port1 and
>>>>>> port2 are for HSIC phys. The usb 2.0 phy is already being setup.
>>>>>> This patch sets up the hsic phys.
>>>>>>
>>>>>> Signed-off-by: Inderpal Singh <inderpal.singh@linaro.org>
>>>>>> ---
>>>>>>
>>>>>>  arch/arm/include/asm/arch-exynos/ehci.h |   14 +++++++++++
>>>>>>  drivers/usb/host/ehci-exynos.c          |   39
>>>>>>
>>>>>> +++++++++++++++++++++++++++++++ 2 files changed, 53 insertions(+)
>>>>>
>>>>> Is it OK to set all the ports up unconditionally ? I am not sure
>>>>> about exynos of
>>>>> course, but is it possible there are some machines which don't use
>>>>> the HSIC ports and this would have some kind of adverse effects on
>>>>> those?
>>>>
>>>> I feel it should not cause any side effect as it wont interfere with
>>>> the normal USB 2.0 phy port. Also, its being done along the same lines
>>>> as kernel driver at drivers/usb/phy/phy-samsung-usb2.c, which also
>>>> sets up
>>>
>>> all
>>>
>>>> ports unconditionally.
>>>
>>> OK, I won't fight this. I would be much more inclined to being able to
>>> conditionally select which ports get configured. Especially, since you do
>>> know
>>> that information from DT, dont you?
>>
>> Ok, Thanks Marek.
>> As of now DT is not providing port information.
> 
> Bah, I'd expect -- especially in case of exynos, which is targetting the mobile 
> segment -- to focus on power consumption very much. Anyway, like I said, I won't 
> fight this. Minkyu, what's your take on this one please?

I agree with Marek.

Thanks,
Minkyu Kang.