On Mon, Jul 08, 2019 at 02:42:54PM +0530, Manivannan Sadhasivam wrote:
Hi Shawn,
Thanks for the patch!
On Sun, Jul 07, 2019 at 08:59:55PM +0800, Shawn Guo wrote:
The Meerkat96 board, based on the NXP i.MX7D SoC, is a member of 96Boards community and complies with all Consumer Edition board specifications.
https://www.novtech.com/products/meerkat96.html https://www.96boards.org/product/imx7-96/
The initial supported/tested devices include:
- Debug serial
- SD
- USB Host (with Ethernet)
While testing, I encountered below error when starting usb:
=> usb start starting USB... Bus usb@30b10000: usb dr_mode not found Error enabling VBUS supply probe failed, error -38
This is expected, as there are some properties missing from DT for USBOTG1, and I haven't put effort on it yet.
Bus usb@30b20000: data abort pc : [<9ffaf574>] lr : [<9ffaf560>] reloc pc : [<87828574>] lr : [<87828560>] sp : 9df7d1b0 ip : 431bde82 fp : 9ff9dc8c r10: 00000000 r9 : 9df84ed8 r8 : 00000000 r7 : 9df865d8 r6 : 9df86578 r5 : 9df87680 r4 : 00000080 r3 : 00000000 r2 : 0196f7b6 r1 : 31310000 r0 : 00000000 Flags: nZCv IRQs off FIQs off Mode SVC_32 Code: 18bd8010 e2841dc2 e2811031 e1a01801 (e5913234) Resetting CPU ...
resetting ...
It looks the exception comes from USBOTG2 which backs both Host ports on Meerkat96 board. I have never seen this in my testing. Do you have any USB device connected to the Host port, when this happens?
Did I miss anything? Sorry, don't have time to debug much...
If you can help me reproduce it on my end, I will debug it.
Shawn