diff mbox

[v2,2/3] ARM64: dts: meson-gx: add clock CLKID_RNG0 to hwrng node

Message ID 8bf052e3-de8f-dbdf-be76-369a7bb1ed15@gmail.com
State Not Applicable, archived
Headers show

Commit Message

Heiner Kallweit Feb. 21, 2017, 8:18 p.m. UTC
Add clock CLKID_RNG0 to HW randon number generator node and
extend the DT binding documentation accordingly.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
v2:
- splitted first version of patch into two
- add DT binding documentation
- mention that clock is optional
- replace spaces with tabs in DT binding example
---
 Documentation/devicetree/bindings/rng/amlogic,meson-rng.txt | 8 ++++++--
 arch/arm64/boot/dts/amlogic/meson-gx.dtsi                   | 2 +-
 arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi                 | 5 +++++
 3 files changed, 12 insertions(+), 3 deletions(-)

Comments

Neil Armstrong Feb. 21, 2017, 9:20 p.m. UTC | #1
On 02/21/2017 12:18 PM, Heiner Kallweit wrote:
> Add clock CLKID_RNG0 to HW randon number generator node and
> extend the DT binding documentation accordingly.
> 
> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
> ---
> v2:
> - splitted first version of patch into two
> - add DT binding documentation

Hi Heiner,

Can you move the dt-bindings to a separate patch ?

> - mention that clock is optional
> - replace spaces with tabs in DT binding example
> ---
>  Documentation/devicetree/bindings/rng/amlogic,meson-rng.txt | 8 ++++++--
>  arch/arm64/boot/dts/amlogic/meson-gx.dtsi                   | 2 +-
>  arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi                 | 5 +++++
>  3 files changed, 12 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/rng/amlogic,meson-rng.txt b/Documentation/devicetree/bindings/rng/amlogic,meson-rng.txt
> index 202f2d09..4c012a04 100644
> --- a/Documentation/devicetree/bindings/rng/amlogic,meson-rng.txt
> +++ b/Documentation/devicetree/bindings/rng/amlogic,meson-rng.txt
> @@ -5,10 +5,14 @@ Required properties:
>  
>  - compatible : should be "amlogic,meson-rng"
>  - reg : Specifies base physical address and size of the registers.
> +- clocks : Optional core clock
> +- clock-names: Name of core clock, must be "core"

Please put these in a separate "Optional Properties" :

Optional Properties:
- clocks : phandle to the following named clocks
- clock-names: Name of core clock, must be "core"

>  
>  Example:
>  
>  rng {
> -        compatible = "amlogic,meson-rng";
> -        reg = <0x0 0xc8834000 0x0 0x4>;
> +	compatible = "amlogic,meson-rng";
> +	reg = <0x0 0xc8834000 0x0 0x4>;
> +	clocks = <&clkc CLKID_RNG0>;
> +	clock-names = "core";
>  };
> diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
> index 5d995f77..620495a4 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
> @@ -380,7 +380,7 @@
>  			#size-cells = <2>;
>  			ranges = <0x0 0x0 0x0 0xc8834000 0x0 0x2000>;
>  
> -			rng {
> +			hwrng: rng {
>  				compatible = "amlogic,meson-rng";
>  				reg = <0x0 0x0 0x0 0x4>;
>  			};
> diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
> index 04b3324b..a375cb21 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
> +++ b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
> @@ -524,3 +524,8 @@
>  &vpu {
>  	compatible = "amlogic,meson-gxbb-vpu", "amlogic,meson-gx-vpu";
>  };
> +
> +&hwrng {
> +	clocks = <&clkc CLKID_RNG0>;
> +	clock-names = "core";
> +};
> 

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Rob Herring (Arm) Feb. 27, 2017, 10:16 p.m. UTC | #2
On Tue, Feb 21, 2017 at 09:18:16PM +0100, Heiner Kallweit wrote:
> Add clock CLKID_RNG0 to HW randon number generator node and
> extend the DT binding documentation accordingly.
> 
> Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
> ---
> v2:
> - splitted first version of patch into two
> - add DT binding documentation
> - mention that clock is optional
> - replace spaces with tabs in DT binding example
> ---
>  Documentation/devicetree/bindings/rng/amlogic,meson-rng.txt | 8 ++++++--
>  arch/arm64/boot/dts/amlogic/meson-gx.dtsi                   | 2 +-
>  arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi                 | 5 +++++
>  3 files changed, 12 insertions(+), 3 deletions(-)

Acked-by: Rob Herring <robh@kernel.org>
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diff mbox

Patch

diff --git a/Documentation/devicetree/bindings/rng/amlogic,meson-rng.txt b/Documentation/devicetree/bindings/rng/amlogic,meson-rng.txt
index 202f2d09..4c012a04 100644
--- a/Documentation/devicetree/bindings/rng/amlogic,meson-rng.txt
+++ b/Documentation/devicetree/bindings/rng/amlogic,meson-rng.txt
@@ -5,10 +5,14 @@  Required properties:
 
 - compatible : should be "amlogic,meson-rng"
 - reg : Specifies base physical address and size of the registers.
+- clocks : Optional core clock
+- clock-names: Name of core clock, must be "core"
 
 Example:
 
 rng {
-        compatible = "amlogic,meson-rng";
-        reg = <0x0 0xc8834000 0x0 0x4>;
+	compatible = "amlogic,meson-rng";
+	reg = <0x0 0xc8834000 0x0 0x4>;
+	clocks = <&clkc CLKID_RNG0>;
+	clock-names = "core";
 };
diff --git a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
index 5d995f77..620495a4 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gx.dtsi
@@ -380,7 +380,7 @@ 
 			#size-cells = <2>;
 			ranges = <0x0 0x0 0x0 0xc8834000 0x0 0x2000>;
 
-			rng {
+			hwrng: rng {
 				compatible = "amlogic,meson-rng";
 				reg = <0x0 0x0 0x0 0x4>;
 			};
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
index 04b3324b..a375cb21 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
@@ -524,3 +524,8 @@ 
 &vpu {
 	compatible = "amlogic,meson-gxbb-vpu", "amlogic,meson-gx-vpu";
 };
+
+&hwrng {
+	clocks = <&clkc CLKID_RNG0>;
+	clock-names = "core";
+};