Add the generic AM33xx RNG module's device tree data and
enable it for the am335x-evm, am335x-evmsk, and am335x-bone
platforms. Also add Documentation file describing the data
for the RNG module.
Signed-off-by: Lokesh Vutla <lokeshvutla@xxxxxx>
---
.../devicetree/bindings/hwrng/omap_rng.txt | 22 ++++++++++++++++++++
arch/arm/boot/dts/am335x-bone.dts | 4 ++++
arch/arm/boot/dts/am335x-evm.dts | 4 ++++
arch/arm/boot/dts/am335x-evmsk.dts | 4 ++++
arch/arm/boot/dts/am33xx.dtsi | 8 +++++++
5 files changed, 42 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwrng/omap_rng.txt
diff --git a/Documentation/devicetree/bindings/hwrng/omap_rng.txt b/Documentation/devicetree/bindings/hwrng/omap_rng.txt
new file mode 100644
index 0000000..6a62acd
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwrng/omap_rng.txt
@@ -0,0 +1,22 @@
+OMAP SoC HWRNG Module
+
+Required properties:
+
+- compatible : Should contain entries for this and backward compatible
+ RNG versions:
+ - "ti,omap2-rng" for OMAP2.
+ - "ti,omap4-rng" for OMAP4, OMAP5 and AM33XX.
+ Note that these two versions are incompatible.
+- ti,hwmods: Name of the hwmod associated with the RNG module
+- reg : Offset and length of the register set for the module
+- interrupts : the interrupt number for the RNG module.
+ Only used for "ti,omap4-rng".
+
+Example:
+/* AM335x */
+rng: rng@48310000 {
+ compatible = "ti,omap4-rng";
+ ti,hwmods = "rng";
+ reg = <0x48310000 0x2000>;
+ interrupts = <111>;
+};
diff --git a/arch/arm/boot/dts/am335x-bone.dts b/arch/arm/boot/dts/am335x-bone.dts
index 444b4ed..46a3887 100644
--- a/arch/arm/boot/dts/am335x-bone.dts
+++ b/arch/arm/boot/dts/am335x-bone.dts
@@ -234,3 +234,7 @@
pinctrl-0 = <&davinci_mdio_default>;
pinctrl-1 = <&davinci_mdio_sleep>;
};
+
+&rng {
+ status = "okay";
+};
diff --git a/arch/arm/boot/dts/am335x-evm.dts b/arch/arm/boot/dts/am335x-evm.dts
index 3aee1a4..ebfbebe1 100644
--- a/arch/arm/boot/dts/am335x-evm.dts
+++ b/arch/arm/boot/dts/am335x-evm.dts
@@ -488,3 +488,7 @@
ti,adc-channels = <4 5 6 7>;
};
};
+
+&rng {
+ status = "okay";
+};
diff --git a/arch/arm/boot/dts/am335x-evmsk.dts b/arch/arm/boot/dts/am335x-evmsk.dts
index 0c8ad17..6610a05 100644
--- a/arch/arm/boot/dts/am335x-evmsk.dts
+++ b/arch/arm/boot/dts/am335x-evmsk.dts
@@ -402,3 +402,7 @@
phy_id = <&davinci_mdio>, <1>;
phy-mode = "rgmii-txid";
};
+
+&rng {
+ status = "okay";
+};
diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index 38b446b..b1e6205 100644
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -530,5 +530,13 @@
#size-cells = <1>;
status = "disabled";
};
+
+ rng: rng@48310000 {
+ compatible = "ti,omap4-rng";
+ ti,hwmods = "rng";
+ reg = <0x48310000 0x2000>;
+ interrupts = <111>;
+ status = "disabled";
+ };
};
};
--
1.7.9.5
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