It appears you need to have
fdt_copy_node_names=/cpus:/psci
fdt_copy_src_addr=0x83080000
in your U-Boot configuration. This is documented somewhere in the middle
of http://elinux.org/Jetson/TX1_Upstream_Kernel.
On 03/23/2017 02:11 AM, Martin Michlmayr wrote:
Vagrant Cascadian observed that only 1 CPU is activated on the Jetson
TX1 development kit.
I can confirm this with mainline Linux and u-boot from mainline (2016.11)
or L4T (2016.03-00633-g3ef9cdb from R23.2).
I see the following in dmesg:
[ 0.000000] /cpus/cpu@1: missing enable-method property
[ 0.000000] /cpus/cpu@2: missing enable-method property
[ 0.000000] /cpus/cpu@3: missing enable-method property
[ 0.052643] Tegra Revision: A02 SKU: 23 CPU Process: 0 SoC Process: -22
[ 0.053149] EFI services will not be available.
[ 0.053316] Brought up 1 CPUs
[ 0.053325] SMP: Total of 1 processors activated.
[ 0.053341] CPU: All CPU(s) started at EL2
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