linux-kernel - [PATCH v3 2/3] dt-bindings: rng: update bindings for MediaTek ARMv8 SoCs

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Message-ID: <1560162984-26104-3-git-send-email-neal.liu@mediatek.com>
Date:   Mon, 10 Jun 2019 18:36:23 +0800
From:   Neal Liu <neal.liu@...iatek.com>
To:     Matt Mackall <mpm@...enic.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Sean Wang <sean.wang@...nel.org>
CC:     Neal Liu <neal.liu@...iatek.com>, <linux-crypto@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <wsd_upstream@...iatek.com>,
        Crystal Guo <Crystal.Guo@...iatek.com>
Subject: [PATCH v3 2/3] dt-bindings: rng: update bindings for MediaTek ARMv8 SoCs

Document the binding used by the MediaTek ARMv8 SoCs random
number generator with TrustZone enabled.

Signed-off-by: Neal Liu <neal.liu@...iatek.com>
---
 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@...0f000 {
 	clocks = <&infracfg CLK_INFRA_TRNG>;
 	clock-names = "rng";
 };
+
+/* secure RNG */
+hwrng: hwrng {
+	compatible = "mediatek,mtk-sec-rng";
+};
-- 
1.7.9.5