Re: Continuous USB resets on NXP i.MX 6ULL device

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Hi Peter,

Am 01.03.2018 um 03:00 schrieb Peter Chen:
> On Wed, Feb 28, 2018 at 06:08:20PM +0100, Stefan Wahren wrote:
>> Hi,
>>
>> i'm not sure this is related, but i noticed something ugly in
>> driver/usb/chipidea/usbmisc_imx.c.
>>
>> The compatible "fsl,imx6ul-usbmisc" uses imx6sx_usbmisc_ops, which uses
>> usbmisc_imx6sx_init (which also calls usbmisc_imx6q_init).
>> Within usbmisc_imx6q_init the flag MX6_BM_NON_BURST_SETTING is enabled.
>>
>> But according to the i.MX6 ULL reference manual this bit is marked as
>> reserved and set to zero at reset.
>>
> For non-core registers, i.mx6ull can use i.mx6q as its base setting, the
> bits you mentioned may also be reserved at imx6qdl RM.
>
just for my understanding: MX6_BM_NON_BURST_SETTING is a no-op on
i.MX6ULL or not properly documented in reference manual?

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