Set etk_d8 in OMAP_MUX_MODE4

Dear all,

I am running Linux version 3.7.10-x10 on my BBxM revision C.

I have configured the PIN MUX as follow in the boardfile:
#ifdef CONFIG_OMAP_MUX

OMAP3_MUX(ETK_D8, OMAP_MUX_MODE4 | OMAP_PIN_INPUT_PULLUP)

But When debugging the IO I have noticed that this pin is not considering what set in the board file but set as the following:

root@arm:/sys/kernel/debug/omap_mux# cat etk_d8
name: etk_d8.sys_drm_msecure (0x480025ec/0x5bc = 0x0e01), b af9, t NA
mode: OMAP_PIN_OUTPUT | OMAP_PIN_OFF_OUTPUT_HIGH | OMAP_MUX_MODE1
signals: etk_d8 | sys_drm_msecure | sdmmc3_dat6 | hsusb1_dir | gpio_22 | NA | hsusb1_tll_dir | NA

Looks like it has something related to sys drm secure mode probably set as default in u-boot?

Question:

what to do to use this pin as GPIO in MODE4?

Thanks for a reply.

Malkowki