• Peng Fan's avatar
    mmc: fsl: introduce wp_enable · 1483151e
    Peng Fan authored
    Introudce wp_enable. To check WPSPL, wp_enable needs to be set
    to 1 in board code.
    Take i.MX6UL for example, for some boards, they do not use WP singal,
    so they does not configure USDHC1_WP_SELECT_INPUT, and its default
    value is 0(GPIO1_IO02). However GPIO1_IO02 is muxed for i2c usage and
    SION bit set. So USDHC controller can always get wp signal and WPSPL
    shows write protect and blocks driver continuing. This is not what
    we want to see, so add wp_enable, and if set to 0, just omit the
    WPSPL checking and this does not effect normal working of usdhc
    If wp-gpios is provided in dts, wp_enable is set to 1, otherwise 0.
    Signed-off-by: default avatarPeng Fan <van.freenix@gmail.com>
    Cc: Pantelis Antoniou <panto@antoniou-consulting.com>
    Cc: York Sun <york.sun@nxp.com>
    Cc: Stefano Babic <sbabic@denx.de>
    Cc: Fabio Estevam <fabio.estevam@nxp.com>
    Tested-by: default avatarFabio Estevam <fabio.estevam@nxp.com>
    Reviewed-by: default avatarYork Sun <york.sun@nxp.com>
fsl_esdhc.h 6.55 KB