平台：Android 7.1
使用到的工具：dtc
工具在kernel 路径下 scripts/dtc
编译完成后可有执行文件生成 dtc
Usage: dtc [options] <input file>
Options: -[qI:O:o:V:d:R:S:p:a:fb:i:H:sW:E:@Ahv]
-q, --quiet
Quiet: -q suppress warnings, -qq errors, -qqq all
-I, --in-format <arg>
Input formats are:
dts - device tree source text
dtb - device tree blob
fs - /proc/device-tree style directory
-o, --out <arg>
Output file
-O, --out-format <arg>
Output formats are:
dts - device tree source text
dtb - device tree blob
asm - assembler source
-V, --out-version <arg>
Blob version to produce, defaults to 17 (for dtb and asm output)
-d, --out-dependency <arg>
Output dependency file
-R, --reserve <arg>
Make space for <number> reserve map entries (for dtb and asm output)
-S, --space <arg>
Make the blob at least <bytes> long (extra space)
-p, --pad <arg>
Add padding to the blob of <bytes> long (extra space)
-a, --align <arg>
Make the blob align to the <bytes> (extra space)
-b, --boot-cpu <arg>
Set the physical boot cpu
-f, --force
Try to produce output even if the input tree has errors
-i, --include <arg>
Add a path to search for include files
-s, --sort
Sort nodes and properties before outputting (useful for comparing trees)
-H, --phandle <arg>
Valid phandle formats are:
legacy - "linux,phandle" properties only
epapr - "phandle" properties only
both - Both "linux,phandle" and "phandle" properties
-W, --warning <arg>
Enable/disable warnings (prefix with "no-")
-E, --error <arg>
Enable/disable errors (prefix with "no-")
-@, --symbols
Enable generation of symbols
-A, --auto-alias
Enable auto-alias of labels
-h, --help
Print this help and exit
-v, --version
Print version and exit
Demo:
dtc -I dtb -O dts dtb.img -o demo.dts
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