6 Mar
2020
6 Mar
'20
2:05 a.m.
On Sat, 29 Feb 2020 16:18:15 +0100, Alexander Tsoy wrote:
MicroBook IIc operates in UAC2 mode by default. This patch addresses several issues with it:
- MicroBook II and IIc shares the same USB ID. We can distinguish them by interface class.
- MaxPacketsOnly attribute is erroneously set in endpoint descriptors. As a result this card produces noise with all sample rates other than 96 KHz. This also causes issues like IOMMU page faults and other problems with host controller.
- Sample rate changes takes more than 2 seconds for this device. Clock validity request returns false during that period, so the clock validity quirk is required.
Signed-off-by: Alexander Tsoy alexander@tsoy.me
Applied now. Thanks.
Takashi