[U-Boot] mx6cuboxi: Detecting wrong .dtb (v2019.01)

Vagrant Cascadian vagrant at debian.org
Wed Feb 13 16:50:57 UTC 2019

I *think* this board is getting the wrong fdtfile set:

U-Boot 2019.01+dfsg-1 (Jan 15 2019 - 00:36:19 +0000)

CPU:   Freescale i.MX6Q rev1.5 996 MHz (running at 792 MHz)
CPU:   Extended Commercial temperature grade (-20C to 105C) at 37C
Reset cause: WDOG
Board: MX6 Cubox-i
DRAM:  3.8 GiB
Loading Environment from MMC... *** Warning - bad CRC, using default

No panel detected: default to HDMI
Display: HDMI (1024x768)
In:    serial
Out:   serial
Err:   serial
Card did not respond to voltage select!
Net:   FEC
Hit any key to stop autoboot:  0
=> printenv som_rev
=> printenv has_emmc
=> printenv findfdt
findfdt=if test ${board_rev} = MX6Q; then setenv fdtprefix imx6q; fi; if
test ${board_rev} = MX6DL; then setenv fdtprefix imx6dl; fi; if test
${som_rev} = V15; then setenv fdtsuffix -som-v15; fi; if test
${has_emmc} = yes; then setenv emmcsuffix -emmc; fi; if test
${board_name} = HUMMINGBOARD2 ; then setenv fdtfile
${fdtprefix}-hummingboard2${emmcsuffix}${fdtsuffix}.dtb; fi; if test
${board_name} = HUMMINGBOARD ; then setenv fdtfile
${fdtprefix}-hummingboard${emmcsuffix}${fdtsuffix}.dtb; fi; if test
${board_name} = CUBOXI ; t=>
=> run findfdt
=> printenv fdtfile

It pretty clearly identifies itself as a rev1.5 in the boot message, but
som_rev is set to undefined, and so it sets fdtfile to the default version.

I haven't had a chance to check a newer version of u-boot, but I don't
see any obvious changes for this board since v2019.01.

My *hunch* is it's either of these two commits, since it was detecting
it correctly in v2018.07:

mx6cuboxi: Use mmc_get_op_cond() to check for an eMMC

mx6cuboxi: Add support for eMMC booting

live well,
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