[U-Boot] [PATCH 3/9] usb: ehci-mx6: introduce config for high active power pin

[Stefan Agner <stefan@agner.ch>]

On 2016-07-03 15:33, Marek Vasut wrote:
> On 07/03/2016 09:33 PM, Stefan Agner wrote:
>> From: Stefan Agner <stefan.agner@toradex.com>
>>
>> Add a new config CONFIG_MXC_USB_OTG_HACTIVE which configures the
>> OTG Power Pin to be high active. Low active is the reset value
>> of the affected configuration register, hence the config option
>> is named by the non-reset configuration.
>>
>> Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
>> ---
>>
>>  drivers/usb/host/ehci-mx6.c   | 4 ++++
>>  include/configs/mx7dsabresd.h | 1 +
>>  include/configs/warp7.h       | 1 +
>>  3 files changed, 6 insertions(+)
>>
>> diff --git a/drivers/usb/host/ehci-mx6.c b/drivers/usb/host/ehci-mx6.c
>> index 0dbabb2..65aede7 100644
>> --- a/drivers/usb/host/ehci-mx6.c
>> +++ b/drivers/usb/host/ehci-mx6.c
>> @@ -212,7 +212,11 @@ static void usb_power_config(int index)
>>  	setbits_le32(phy_cfg2, USBNC_PHYCFG2_ACAENB);
>>
>>  	/* Set power polarity to high active */
>> +#ifdef CONFIG_MXC_USB_OTG_HACTIVE
>>  	setbits_le32(ctrl, UCTRL_PWR_POL);
>> +#else
>> +	clrbits_le32(ctrl, UCTRL_PWR_POL);
>> +#endif
> 
> This should go into 2/9

I consciously separated the two things: Move in which function we set
the polarity, add a new configuration to the polarity. But arguably,
they are so close that we could also just make one out of it.

> 
> Also, if it is at all possible already to configure this from DT, do it.

Agreed dt would be nicer. But currently i.MX 7 does not use dt by
default, so this would be rather bigger thing...

> If not, we'd have to deal with another macro, meh. At least convert this
> macro to Kconfig and document the Kconfig entry.
> 

Will go this route...

--
Stefan

>>  }
>>
>>  int usb_phy_mode(int port)
>> diff --git a/include/configs/mx7dsabresd.h b/include/configs/mx7dsabresd.h
>> index ece8a03..d8c9245 100644
>> --- a/include/configs/mx7dsabresd.h
>> +++ b/include/configs/mx7dsabresd.h
>> @@ -245,6 +245,7 @@
>>  #define CONFIG_USB_ETHER_ASIX
>>  #define CONFIG_MXC_USB_PORTSC  (PORT_PTS_UTMI | PORT_PTS_PTW)
>>  #define CONFIG_MXC_USB_FLAGS   0
>> +#define CONFIG_MXC_USB_OTG_HACTIVE
>>  #define CONFIG_USB_MAX_CONTROLLER_COUNT 2
>>
>>  #define CONFIG_IMX_THERMAL
>> diff --git a/include/configs/warp7.h b/include/configs/warp7.h
>> index fc0e51a..77db732 100644
>> --- a/include/configs/warp7.h
>> +++ b/include/configs/warp7.h
>> @@ -121,6 +121,7 @@
>>
>>  #define CONFIG_MXC_USB_PORTSC		(PORT_PTS_UTMI | PORT_PTS_PTW)
>>  #define CONFIG_MXC_USB_FLAGS		0
>> +#define CONFIG_MXC_USB_OTG_HACTIVE
>>  #define CONFIG_USB_MAX_CONTROLLER_COUNT 1 /* Only OTG1 port enabled */
>>
>>  #define CONFIG_IMX_THERMAL
>>