Re: Board mux entries ignored?

[Tony Lindgren <tony@atomide.com>]

* John Faith <jfaith7@gmail.com> [100804 22:22]:
> Hi,
> I'm trying to set mux modes for a 3530, package CBC in my board.c
> (2.6.32 kernel) using an omap_board_mux entry:
>  OMAP3_MUX(GPMC_WAIT1, OMAP_MUX_MODE0 | OMAP_PIN_INPUT),
> 
> , but sysfs reports mode4:
> # grep WAIT1 /sys/kernel/debug/omap_mux/board
> OMAP3_MUX(GPMC_WAIT1, OMAP_PIN_INPUT | OMAP_MUX_MODE4),
> 
> I tried adding to bootargs "omap_mux=gpmc_wait1.gpmc_wait1=0x100", but
> still got MODE4.  Doing "echo 0x100 >
> /sys/kernel/debug/omap_mux/gpmc_wait1" gave me MODE0, but I'd prefer
> to init pins in board.c.  I've also noticed for pin SDMMC2_DAT3 that
> my OMAP3_MUX() entry specifies MODE1, but sysfs shows MODE4; it
> changed to MODE1 after adding:
>  omap_mux_init_signal("mcspi3_cs0", OMAP_PIN_OUTPUT);
> 
> Is just having the mode in omap_board_mux entries sufficient?

Hmm that should be enough. Does dmesg | grep -i mux show any errors?

You do have CONFIG_OMAP_MUX set, right? Otherwise omap_mux_init_signals
does not do anything, and the mux code just builds a list of GPIO
pins for PM runtime muxing (not implemented yet).

Regards,

Tony