Would you teach about SD2_CD_B and SD2_WP signal on i.MX6DL_SABRE-SDP?
According to a reference manual,(IMX6SDLRM.pdf)
The SD2_CD_B of i.MX6DL is assigned to GPIO_4(ALT6)(pin R6).
And, the SD2_WP is assigned to GPIO_2(ALT6)(pin T1).
However, In i.MX6DL_SABRE-SDP, the NANDF_D2(pin F16) is used as SD2_CD_B signal.
And, the NANDF_D3(pin D17) is used as SD2_WP signal.
(I understand that these signals are controlled by GPIO.)
Would you teach the reason for not using pins in which these signals were assigned?