Document the binding used by the MediaTek ARMv8 SoCs random
number generator with TrustZone enabled.
Signed-off-by: Neal Liu <neal.liu@xxxxxxxxxxxx>
---
Documentation/devicetree/bindings/rng/mtk-rng.txt | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/Documentation/devicetree/bindings/rng/mtk-rng.txt b/Documentation/devicetree/bindings/rng/mtk-rng.txt
index 2bc89f1..fb3dd59 100644
--- a/Documentation/devicetree/bindings/rng/mtk-rng.txt
+++ b/Documentation/devicetree/bindings/rng/mtk-rng.txt
@@ -3,9 +3,13 @@ found in MediaTek SoC family
Required properties:
- compatible : Should be
- "mediatek,mt7622-rng", "mediatek,mt7623-rng" : for MT7622
- "mediatek,mt7629-rng", "mediatek,mt7623-rng" : for MT7629
- "mediatek,mt7623-rng" : for MT7623
+ "mediatek,mt7622-rng", "mediatek,mt7623-rng" for MT7622
+ "mediatek,mt7629-rng", "mediatek,mt7623-rng" for MT7629
+ "mediatek,mt7623-rng" for MT7623
+ "mediatek,mtk-sec-rng" for MediaTek ARMv8 SoCs with
+ security RNG
+
+Optional properties:
- clocks : list of clock specifiers, corresponding to
entries in clock-names property;
- clock-names : Should contain "rng" entries;
@@ -19,3 +23,8 @@ rng: rng@1020f000 {
clocks = <&infracfg CLK_INFRA_TRNG>;
clock-names = "rng";
};
+
+/* secure RNG */
+hwrng: hwrng {
+ compatible = "mediatek,mtk-sec-rng";
+};
--
1.7.9.5
