REL 1.0
Page 44 of 69
iWave Systems Technologies Pvt. Ltd.
iW-RainboW-G15D Linux User Manual
4.3.7
Optional features settings
By default Quad core will be in active state. To limit the no of processors add the below string in the boot
arguments.
maxcpus=<maximum no of cpu to be active>
Example
iWave-G15 >setenv bootargs_mmc 'setenv bootargs ${bootargs_base} root=/dev/mmcblk2p2
rootwait rootfstype=ext4 rw ${hdmi} ${lcd} maxcpus=2'
By default LDO core regulators will be bypassed (LDO bypass). To activate the LDO regulators (LDO active),
set the below environment variable.
Uboot_ldo_active = 1 - LDO Active
Uboot_ldo_active = 0 - LDO bypass (default)
Example
iWave-G15 >setenv Uboot_ldo_active ‘1’
To restore the default environment variables execute the below commands
iWave-G15 >env default -f -a
iWave-G15 >saveenv
iWave-G15 >reset
