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dt-bindings: timeriomem_rng: Add entropy quality property

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Signed-off-by: Rick Altherr <raltherr@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Rick Altherr 2017-05-22 14:12:23 -07:00 committed by Herbert Xu
parent 2a9faf8b7e
commit b14c534517
1 changed files with 7 additions and 0 deletions
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Documentation/devicetree/bindings/rng/timeriomem_rng.txt
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@ -5,6 +5,13 @@ Required properties:
- reg : base address to sample from
- period : wait time in microseconds to use between samples
Optional properties:
- quality : estimated number of bits of true entropy per 1024 bits read from the
rng. Defaults to zero which causes the kernel's default quality to
be used instead. Note that the default quality is usually zero
which disables using this rng to automatically fill the kernel's
entropy pool.
N.B. currently 'reg' must be four bytes wide and aligned
Example: