LS1028A / LS1027A: disabling GPU

[mbourhis]

LS1028A and LS1027A are 2 SoC of the same family.

LS1028A has a GPU (GC7000UltraLite) and LS1027A has not.

Is it possible, through a software configuration, to disable the LS1028A GPU?

(with a modification in DeviceTree file, or a Kernel option or a Boot argument?)

Thanks for your help.

Regards,

[ufedor · Accepted solution]

GPU can be disabled by setting DEVDISR6[GPU] in PBL.

This can be done as RCW source modification by adding ".rcw" file containing:

.pbi
write 0x1e00084,0x00001000
.end