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authorAlexander Clouter <alex@digriz.org.uk>2013-03-31 17:34:51 +0100
committerHerbert Xu <herbert@gondor.apana.org.au>2013-04-25 21:01:46 +0800
commitb149a30d87d165e1079163fdab6f14e48b2f57b2 (patch)
treed6ced5787f9831ea9daa759bd600de59a4705a65 /Documentation/devicetree
parent1907da78bf6a3f74e5d030a4a4f6700ba0d0a234 (diff)
hwrng: timeriomem - added devicetree hooks
This patch allows timeriomem_rng to be used via devicetree. Signed-off-by: Alexander Clouter <alex@digriz.org.uk> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/hwrng/timeriomem_rng.txt18
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/hwrng/timeriomem_rng.txt b/Documentation/devicetree/bindings/hwrng/timeriomem_rng.txt
new file mode 100644
index 000000000000..6616d15866a3
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwrng/timeriomem_rng.txt
@@ -0,0 +1,18 @@
+HWRNG support for the timeriomem_rng driver
+
+Required properties:
+- compatible : "timeriomem_rng"
+- reg : base address to sample from
+- period : wait time in microseconds to use between samples
+
+N.B. currently 'reg' must be four bytes wide and aligned
+
+Example:
+
+hwrng@44 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "timeriomem_rng";
+ reg = <0x44 0x04>;
+ period = <1000000>;
+};