linux-kernel - [PATCH v1 1/2] dt-binding: hwrng: add NPCM RNG documentation

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Date:   Wed, 28 Aug 2019 19:26:16 +0300
From:   Tomer Maimon <tmaimon77@...il.com>
To:     mpm@...enic.com, herbert@...dor.apana.org.au, arnd@...db.de,
        gregkh@...uxfoundation.org, robh+dt@...nel.org,
        mark.rutland@....com, avifishman70@...il.com,
        tali.perry1@...il.com, venture@...gle.com, yuenn@...gle.com,
        benjaminfair@...gle.com, sumit.garg@...aro.org,
        jens.wiklander@...aro.org, vkoul@...nel.org, tglx@...utronix.de,
        joel@....id.au
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-crypto@...r.kernel.org, openbmc@...ts.ozlabs.org,
        Tomer Maimon <tmaimon77@...il.com>
Subject: [PATCH v1 1/2] dt-binding: hwrng: add NPCM RNG documentation

Added device tree binding documentation for Nuvoton BMC
NPCM Random Number Generator (RNG).

Signed-off-by: Tomer Maimon <tmaimon77@...il.com>
---
 .../bindings/rng/nuvoton,npcm-rng.txt           | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rng/nuvoton,npcm-rng.txt

diff --git a/Documentation/devicetree/bindings/rng/nuvoton,npcm-rng.txt b/Documentation/devicetree/bindings/rng/nuvoton,npcm-rng.txt
new file mode 100644
index 000000000000..a697b4425fb3
--- /dev/null
+++ b/Documentation/devicetree/bindings/rng/nuvoton,npcm-rng.txt
@@ -0,0 +1,17 @@
+NPCM SoC Random Number Generator
+
+Required properties:
+- compatible  : "nuvoton,npcm750-rng" for the NPCM7XX BMC.
+- reg         : Specifies physical base address and size of the registers.
+
+Optional property:
+- quality : estimated number of bits of true entropy per 1024 bits
+			read from the rng.
+			If this property is not defined, it defaults to 1000.
+
+Example:
+
+rng: rng@...0b000 {
+	compatible = "nuvoton,npcm750-rng";
+	reg = <0xf000b000 0x8>;
+};
-- 
2.18.0