I'm working on i.MX6 Solo custom board with Yocto 4.1.15-2.1.0 GA release.
I have problem to use external SD memory card on my board.
The device driver cannot not probing SD memory card interface.
I wondering my board SD memory card interface hardware have some different from Sabresd board.
my board use SD2 interface.
i.MX6 manual said, SD2_WP must tied to low, if do not use write protection line.
(page 5602 of "i.MX6 Solo/DualLite Applications Processor Reference Manual, Rev2, 04/2015")
unfortunately, my board floating SD2_WP board now.
I guess, this is make trouble to working of SD memory interface.
My question is
1. if I floating SD2_WP, the SD memory card is not work?
2. is there any way to resolve this problem by software?
modify device driver or device tree blob.