Re: [U-Boot] [PATCH v5 7/9] armv7: Add workaround for USB erratum A-009798

2017-09-12 Thread York Sun
On 09/04/2017 04:04 AM, Ran Wang wrote: > The default setting for USB High Speed Squelch Threshold results > in a threshold close to or lower than 100mV. This leads to Receive > Compliance test failure for a 100mV threshold. > > Shift the threshold from ~100mV towards ~130mV by setting SQRXTUNE >

[U-Boot] [PATCH v5 7/9] armv7: Add workaround for USB erratum A-009798

2017-09-04 Thread Ran Wang
The default setting for USB High Speed Squelch Threshold results in a threshold close to or lower than 100mV. This leads to Receive Compliance test failure for a 100mV threshold. Shift the threshold from ~100mV towards ~130mV by setting SQRXTUNE to 0x0 to pass USB High Speed Receiver Sensitivity C