*** This bug is a duplicate of bug 1848790 ***
https://bugs.launchpad.net/bugs/1848790
About the problem of "there is no /dev/mmcblk0* device", I checked your
dmesg, there are two places are weird
the 1st one is about the raspberrypi-firmware, on my board, the dmesg will show:
[ 0.100540] raspberrypi-firmware soc:firmware: Attached to firmware from
2019-08-15 12:03, variant start
[ 0.110122] raspberrypi-firmware soc:firmware: Firmware hash is
9f8431fb7839c7f00f52b81f5822ddab2b31d0db
And there are not errors about firmware, but your dmesg is different.
the 2nd one is about mmc-bcm2835 driver, your kernel always report:
mmc-bcm2835 fe300000.mmcnr: could not get clk, deferring probe
That is different from my board, on my board, it only reports that
message once, Then the driver could get the clk successfully.
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https://bugs.launchpad.net/bugs/1848703
Title:
Raspberry Pi 4 - USB Bus not detecting any devices
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