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QCOM device tree bindings
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Some qcom based bootloaders identify the dtb blob based on a set of
device properties like SoC and platform and revisions of those components.
To support this scheme, we encode this information into the board compatible
string.
Each board must specify a top-level board compatible string with the following
format:
compatible = "qcom,<SoC>[-<soc_version>][-<foundry_id>]-<board>[/<subtype>][-<board_version>]"
The 'SoC' and 'board' elements are required. All other elements are optional.
The 'SoC' element must be one of the following strings:
apq8016
apq8074
apq8084
apq8096
msm8916
msm8974
msm8996
The 'board' element must be one of the following strings:
cdp
liquid
dragonboard
mtp
sbc
The 'soc_version' and 'board_version' elements take the form of v<Major>.<Minor>
where the minor number may be omitted when it's zero, i.e. v1.0 is the same
as v1. If all versions of the 'board_version' elements match, then a
wildcard '*' should be used, e.g. 'v*'.
The 'foundry_id' and 'subtype' elements are one or more digits from 0 to 9.
Examples:
"qcom,msm8916-v1-cdp-pm8916-v2.1"
A CDP board with an msm8916 SoC, version 1 paired with a pm8916 PMIC of version
2.1.
"qcom,apq8074-v2.0-2-dragonboard/1-v0.1"
A dragonboard board v0.1 of subtype 1 with an apq8074 SoC version 2, made in
foundry 2.
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