linux-kernel - [PATCH 1/2] Documentation: dt: rng: add bindings doc for Keystone SA HWRNG driver

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Message-ID: <1519908900-10388-2-git-send-email-vitalya@ti.com>
Date:   Thu, 1 Mar 2018 07:54:59 -0500
From:   Vitaly Andrianov <vitalya@...com>
To:     <mpm@...enic.com>, <herbert@...dor.apana.org.au>, <arnd@...db.de>,
        <gregkh@...uxfoundation.org>, <linux-kernel@...r.kernel.org>,
        <linux-crypto@...r.kernel.org>, <robh+dt@...nel.org>,
        <mark.rutland@....com>, <devicetree@...r.kernel.org>
CC:     <t-kristo@...com>, <vitalya@...com>, <m-karicheri2@...com>
Subject: [PATCH 1/2] Documentation: dt: rng: add bindings doc for Keystone SA HWRNG driver

The Keystone SA module has a hardware random generator module.
This commit adds binding doc for the KS2 SA HWRNG driver.

Signed-off-by: Vitaly Andrianov <vitalya@...com>
Signed-off-by: Murali Karicheri <m-karicheri2@...com>
---
 Documentation/devicetree/bindings/rng/ks-sa-rng.txt | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rng/ks-sa-rng.txt

diff --git a/Documentation/devicetree/bindings/rng/ks-sa-rng.txt b/Documentation/devicetree/bindings/rng/ks-sa-rng.txt
new file mode 100644
index 0000000..cc8ee44
--- /dev/null
+++ b/Documentation/devicetree/bindings/rng/ks-sa-rng.txt
@@ -0,0 +1,21 @@
+Keystone SoC Hardware Random Number Generator(HWRNG) Module
+
+On Keystone SoCs HWRNG module is a submodule of the Security Accelerator.
+
+- compatible: should be "ti,keystone-rng"
+- ti,syscon-sa-cfg: phandle to syscon node of the SA configuration registers.
+		    This registers are shared between hwrng and crypto drivers.
+- clocks: phandle to the reference clocks for the subsystem
+- clock-names: functional clock name. Should be set to "fck"
+- reg: HWRNG module register space
+
+Example:
+/* K2HK */
+
+hwrng@...4000 {
+	compatible = "ti,keystone-rng";
+	ti,syscon-sa-cfg = <&sa_config>;
+	clocks = <&clksa>;
+	clock-names = "fck";
+	reg = <0x24000 0x1000>;
+};
-- 
2.7.4