diff mbox

[3/3] ARM: dts: AM33xx: Add RNG node

Message ID 1375777984-6267-4-git-send-email-lokeshvutla@ti.com
State Under Review
Headers show

Commit Message

Lokesh Vutla Aug. 6, 2013, 8:33 a.m. UTC
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@ti.com>
---
 .../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

Comments

Russ Dill Aug. 6, 2013, 6:17 p.m. UTC | #1
On Tue, Aug 6, 2013 at 1:33 AM, Lokesh Vutla <lokeshvutla@ti.com> wrote:
> 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@ti.com>
> ---
>  .../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";

Is there any point in making this default to "disabled"? Are there any
am335x platforms where the trng doesn't function?

> +               };
>         };
>  };
> --
> 1.7.9.5
>
> --
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Lokesh Vutla Aug. 7, 2013, 6:17 a.m. UTC | #2
On Tuesday 06 August 2013 11:47 PM, Russ Dill wrote:
> On Tue, Aug 6, 2013 at 1:33 AM, Lokesh Vutla <lokeshvutla@ti.com> wrote:
>> 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@ti.com>
>> ---
>>  .../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";
> 
> Is there any point in making this default to "disabled"? Are there any
> am335x platforms where the trng doesn't function?
Yes, you are correct. Just followed how aes and sha are done.
ll update and send a v2.

Thanks and regards,
Lokesh
> 
>> +               };
>>         };
>>  };
>> --
>> 1.7.9.5
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-omap" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html

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diff mbox

Patch

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";
+		};
 	};
 };