Re: 回复: [PATCH v1 1/4] ehci-mx6: Add powerup_fixup implementation

[Marek Vasut]

On 12/1/25 12:07 PM, Alice Guo (OSS) wrote:

>>> This sequence is ok for our IP when the delay time is exact. But when
>>> the timer is slower
>>
>> How can the timer be slower ? Maybe there is some bug somewhere else ?
> 
> On i.MX8ULP, the A35 system counter uses the internal LPO. The trimmed frequency of the LPO is not as accurate as an external oscillator.
How much does it drift ? Details please ?