diff mbox series

[v4,1/6] dt-bindings: ap806: add the cluster clock node in the syscon file

Message ID 20190325124803.28904-2-gregory.clement@bootlin.com (mailing list archive)
State New, archived
Headers show
Series Add CPU clock support for Armada 7K/8K | expand

Commit Message

Gregory CLEMENT March 25, 2019, 12:47 p.m. UTC
Document the device tree binding for the cluster clock controllers found
in the Armada 7K/8K SoCs.

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
---
 .../arm/marvell/ap806-system-controller.txt   | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

Comments

Rob Herring (Arm) March 28, 2019, 5:13 p.m. UTC | #1
On Mon, Mar 25, 2019 at 01:47:58PM +0100, Gregory CLEMENT wrote:
> Document the device tree binding for the cluster clock controllers found
> in the Armada 7K/8K SoCs.
> 
> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
> ---
>  .../arm/marvell/ap806-system-controller.txt   | 25 +++++++++++++++++++
>  1 file changed, 25 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt b/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
> index 7b8b8eb0191f..ceeba18b4ac3 100644
> --- a/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
> +++ b/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
> @@ -143,3 +143,28 @@ ap_syscon1: system-controller@6f8000 {
>  		#thermal-sensor-cells = <1>;
>  	};
>  };
> +
> +Cluster clocks:
> +---------------
> +
> +Device Tree Clock bindings for cluster clock of AP806 Marvell. Each
> +cluster contain up to 2 CPUs running at the same frequency.
> +
> +Required properties:
> +- compatible: must be  "marvell,ap806-cpu-clock";
> +- #clock-cells : should be set to 1.
> +- clocks : shall be the input parents clock phandle for the clock.
> +
> +Optional property:
> + - reg: register range associated the cluser clocks

reg can be optional to use, but should either be there or not.

And there's a typo.

> +
> +ap_syscon1: system-controller@6f8000 {
> +	compatible = "syscon", "simple-mfd";
> +	reg = <0x6f8000 0x1000>;
> +
> +	cpu_clk: clock-cpu {
> +		compatible = "marvell,ap806-cpu-clock";
> +		clocks = <&ap_clk 0>, <&ap_clk 1>;
> +		#clock-cells = <1>;
> +	};
> +};
> -- 
> 2.20.1
>
Gregory CLEMENT March 28, 2019, 5:25 p.m. UTC | #2
Hi Rob,
 
 On jeu., mars 28 2019, Rob Herring <robh@kernel.org> wrote:

> On Mon, Mar 25, 2019 at 01:47:58PM +0100, Gregory CLEMENT wrote:
>> Document the device tree binding for the cluster clock controllers found
>> in the Armada 7K/8K SoCs.
>> 
>> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
>> ---
>>  .../arm/marvell/ap806-system-controller.txt   | 25 +++++++++++++++++++
>>  1 file changed, 25 insertions(+)
>> 
>> diff --git a/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt b/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
>> index 7b8b8eb0191f..ceeba18b4ac3 100644
>> --- a/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
>> +++ b/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
>> @@ -143,3 +143,28 @@ ap_syscon1: system-controller@6f8000 {
>>  		#thermal-sensor-cells = <1>;
>>  	};
>>  };
>> +
>> +Cluster clocks:
>> +---------------
>> +
>> +Device Tree Clock bindings for cluster clock of AP806 Marvell. Each
>> +cluster contain up to 2 CPUs running at the same frequency.
>> +
>> +Required properties:
>> +- compatible: must be  "marvell,ap806-cpu-clock";
>> +- #clock-cells : should be set to 1.
>> +- clocks : shall be the input parents clock phandle for the clock.
>> +
>> +Optional property:
>> + - reg: register range associated the cluser clocks
>
> reg can be optional to use, but should either be there or not.

OK so let's remove it!

Thanks,

Grégory

>
> And there's a typo.
>
>> +
>> +ap_syscon1: system-controller@6f8000 {
>> +	compatible = "syscon", "simple-mfd";
>> +	reg = <0x6f8000 0x1000>;
>> +
>> +	cpu_clk: clock-cpu {
>> +		compatible = "marvell,ap806-cpu-clock";
>> +		clocks = <&ap_clk 0>, <&ap_clk 1>;
>> +		#clock-cells = <1>;
>> +	};
>> +};
>> -- 
>> 2.20.1
>>
Rob Herring (Arm) March 28, 2019, 5:39 p.m. UTC | #3
On Thu, Mar 28, 2019 at 06:25:14PM +0100, Gregory CLEMENT wrote:
> Hi Rob,
>  
>  On jeu., mars 28 2019, Rob Herring <robh@kernel.org> wrote:
> 
> > On Mon, Mar 25, 2019 at 01:47:58PM +0100, Gregory CLEMENT wrote:
> >> Document the device tree binding for the cluster clock controllers found
> >> in the Armada 7K/8K SoCs.
> >> 
> >> Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
> >> ---
> >>  .../arm/marvell/ap806-system-controller.txt   | 25 +++++++++++++++++++
> >>  1 file changed, 25 insertions(+)
> >> 
> >> diff --git a/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt b/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
> >> index 7b8b8eb0191f..ceeba18b4ac3 100644
> >> --- a/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
> >> +++ b/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
> >> @@ -143,3 +143,28 @@ ap_syscon1: system-controller@6f8000 {
> >>  		#thermal-sensor-cells = <1>;
> >>  	};
> >>  };
> >> +
> >> +Cluster clocks:
> >> +---------------
> >> +
> >> +Device Tree Clock bindings for cluster clock of AP806 Marvell. Each
> >> +cluster contain up to 2 CPUs running at the same frequency.
> >> +
> >> +Required properties:
> >> +- compatible: must be  "marvell,ap806-cpu-clock";
> >> +- #clock-cells : should be set to 1.
> >> +- clocks : shall be the input parents clock phandle for the clock.
> >> +
> >> +Optional property:
> >> + - reg: register range associated the cluser clocks
> >
> > reg can be optional to use, but should either be there or not.
> 
> OK so let's remove it!

If you can define what the registers are, then you should have it even 
if Linux happens to not care.

Rob
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt b/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
index 7b8b8eb0191f..ceeba18b4ac3 100644
--- a/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
+++ b/Documentation/devicetree/bindings/arm/marvell/ap806-system-controller.txt
@@ -143,3 +143,28 @@  ap_syscon1: system-controller@6f8000 {
 		#thermal-sensor-cells = <1>;
 	};
 };
+
+Cluster clocks:
+---------------
+
+Device Tree Clock bindings for cluster clock of AP806 Marvell. Each
+cluster contain up to 2 CPUs running at the same frequency.
+
+Required properties:
+- compatible: must be  "marvell,ap806-cpu-clock";
+- #clock-cells : should be set to 1.
+- clocks : shall be the input parents clock phandle for the clock.
+
+Optional property:
+ - reg: register range associated the cluser clocks
+
+ap_syscon1: system-controller@6f8000 {
+	compatible = "syscon", "simple-mfd";
+	reg = <0x6f8000 0x1000>;
+
+	cpu_clk: clock-cpu {
+		compatible = "marvell,ap806-cpu-clock";
+		clocks = <&ap_clk 0>, <&ap_clk 1>;
+		#clock-cells = <1>;
+	};
+};