That looks like Linux initializing the UART. Prior to the I993X UART line, I’m getting framing errors. After it there are no errors on the serial line. Is there a way to verify what bit rate/etc the port is set to in uBoot? Do you think all my USB UARTs are defective? They are all the same type, but from different sources.
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I933X UART
[ 0.700000] console [ttyATH0] enabled
[ 0.700000] console [ttyATH0] enabled
[ 0.710000] bootconsole [early0] disabled
[ 0.710000] bootconsole [early0] disabled
[ 0.720000] m25p80 spi0.0: found w25q128, expected m25p80
[ 0.720000] m25p80 spi0.0: w25q128 (16384 Kbytes)
[ 0.730000] 4 cmdlinepart partitions found on MTD device spi0.0
[ 0.740000] Creating 4 MTD partitions on “spi0.0”:
[ 0.740000] 0x000000000000-0x000000040000 : “u-boot”
[ 0.750000] 0x000000040000-0x000000050000 : “u-boot-env”
[ 0.750000] 0x000000050000-0x000000ff0000 : “firmware”
[ 0.790000] 2 uimage-fw partitions found on MTD device firmware
[ 0.800000] 0x000000050000-0x000000180000 : “kernel”
[ 0.800000] 0x000000180000-0x000000ff0000 : “rootfs”
[ 0.810000] mtd: device 4 (rootfs) set to be root filesystem
[ 0.810000] 1 squashfs-split partitions found on MTD device rootfs
[ 0.820000] 0x000000670000-0x000000ff0000 : “rootfs_data”
[ 0.820000] 0x000000ff0000-0x000001000000 : “art”