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The system takes 2 minutes to get to a login prompt on the console.
A Y-COM takes ~12 seconds using the same SD card on the same Tobi board.
I get these mmc messages while booting
[ 67.969146] udevd: worker  /devices/platform/68000000.ocp/480b4000.mmc/mmc_host/mmc1/mmc1:0001/mmc1:0001:1 is taking a long time
[ 67.982299] udevd: worker  /devices/platform/68000000.ocp/480b4000.mmc/mmc_host/mmc1/mmc1:0001/mmc1:0001:2 is taking a long time
[ 67.995422] udevd: worker  /devices/platform/68000000.ocp/480b4000.mmc/mmc_host/mmc1/mmc1:0001/mmc1:0001:3 is taking a long time
480b4000.mmc is the mmc the radio is attached to.
The 4.8 kernel is from github.com/gumstix/linux.
The 4.9.32 kernel is from linux-stable with some omap3-overo dts updates for
the wifi chips taken from the Gumstix 4.8 repo.
If I blacklist the Marvell Bluetooth drivers, the P-COM comes up as quickly
as the Y-COM.