CHMMCSD settings for Beagleboard (OMAP3530)

Hi everyone,
I'm trying to use a CHMMCSD structure with the Configuration Header.

Based on TRM and u-boot memory values (shell) I have these settings:

/* MMCSD configuration section - optional */
platform_chmmcsd = {
    section_key = "0xC0C0C0C4"
    valid = "0x1"
    MMCHS_SYSCTRL_MSB = "0x000E"
    MMCHS_SYSCTRL_LSB = "0x0207"
    bus_width = "0x4"
}

However it doesn't seem to work (booting stops at "40W").
If I remove the structure, booting works fine.
Am I doing something wrong ?
Did anyone try CHMMCSD on Beagleboard ?

Thanks!