Re: [PATCH] ARM: OMAP: USB: fix warning on EHCI PHY reset path

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On Wed, Mar 28, 2012 at 4:23 PM, Raja, Govindraj <govindraj.raja@xxxxxx> wrote:
> On Wed, Mar 28, 2012 at 2:22 PM, Felipe Balbi <balbi@xxxxxx> wrote:
>> On Tue, Mar 27, 2012 at 04:08:55PM +0200, Igor Grinberg wrote:
>>> When PHY reset pin is connected to a GPIO on external GPIO chip
>>> (e.g. I2C), we should not call the gpio_set_value() function, but
>>> gpio_set_value_cansleep().
>>>
>>> Signed-off-by: Igor Grinberg <grinberg@xxxxxxxxxxxxxx>
>>
>> Acked-by: Felipe Balbi <balbi@xxxxxx>
>>
>> Keshava, please give us your tested-by. Patch looks fine to me.
>
> Tried on beagle-xm where the smsc hub + smsc95xx ethernet controller
> relies gpio nreset sequence for initialization.
>
> Both hub + Ethernet controller get enumerated even after this patch.
>
> Tested-by: Govindraj.R <govindraj.raja@xxxxxx>
>
>>

Thanks govind.



>>> ---
>>> This patch depends on the patch from Keshava [1]:
>>> ARM: OMAP3: USB: Fix the EHCI ULPI PHY reset issue
>>>
>>> [1] http://www.spinics.net/lists/linux-omap/msg66774.html
>>>
>>>  drivers/usb/host/ehci-omap.c |    4 ++--
>>>  1 files changed, 2 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/drivers/usb/host/ehci-omap.c b/drivers/usb/host/ehci-omap.c
>>> index 5c78f9e..26e9241 100644
>>> --- a/drivers/usb/host/ehci-omap.c
>>> +++ b/drivers/usb/host/ehci-omap.c
>>> @@ -258,10 +258,10 @@ static int ehci_hcd_omap_probe(struct platform_device *pdev)
>>>               udelay(10);
>>>
>>>               if (gpio_is_valid(pdata->reset_gpio_port[0]))
>>> -                     gpio_set_value(pdata->reset_gpio_port[0], 1);
>>> +                     gpio_set_value_cansleep(pdata->reset_gpio_port[0], 1);
>>>
>>>               if (gpio_is_valid(pdata->reset_gpio_port[1]))
>>> -                     gpio_set_value(pdata->reset_gpio_port[1], 1);
>>> +                     gpio_set_value_cansleep(pdata->reset_gpio_port[1], 1);
>>>       }
>>>
>>>       return 0;
>>> --
>>> 1.7.3.4
>>>
>>
>> --
>> balbi
--
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