[PATCH 1/2] ARM: dts: imx7d: move CPU operating points to imx7d.dtsi

[PATCH 1/2] ARM: dts: imx7d: move CPU operating points to imx7d.dtsi

[Stefan Agner]

Only i.MX 7Dual SoC supports CPU frequencies of up to 1GHz. The i.MX
7Solo can run with up to 800MHz and does so without making use of DVFS
usually. While the device tree clearly specified a too fast operating
point for i.MX 7Solo, the kernel did not used it in practise so far
because the CPUfreq driver does not get loaded on i.MX 7Solo devices
(since the fsl,imx7s compatible string is not in the list of devices
making use of the cpufreq-dt driver...).

Signed-off-by: Stefan Agner <stefan-XLVq0VzYD2Y@public.gmane.org>
---
Hi Shawn,

This is based on my earlier patchset:
ARM: dts: imx7d: move ARM platform peripherals inside soc

This are kind of fixes too, so if possible I would like to see them
in v4.8, what do you think?

--
Stefan

 arch/arm/boot/dts/imx7d.dtsi | 8 ++++++++
 arch/arm/boot/dts/imx7s.dtsi | 5 -----
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/arch/arm/boot/dts/imx7d.dtsi b/arch/arm/boot/dts/imx7d.dtsi
index 3d77d95..d0b199c 100644
--- a/arch/arm/boot/dts/imx7d.dtsi
+++ b/arch/arm/boot/dts/imx7d.dtsi
@@ -45,6 +45,14 @@
 
 / {
 	cpus {
+		cpu0: cpu@0 {
+			operating-points = <
+				/* KHz	uV */
+				996000	1075000
+				792000	975000
+			>;
+		};
+
 		cpu1: cpu@1 {
 			compatible = "arm,cortex-a7";
 			device_type = "cpu";
diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
index c63591c..5132e2f 100644
--- a/arch/arm/boot/dts/imx7s.dtsi
+++ b/arch/arm/boot/dts/imx7s.dtsi
@@ -85,11 +85,6 @@
 			compatible = "arm,cortex-a7";
 			device_type = "cpu";
 			reg = <0>;
-			operating-points = <
-				/* KHz	uV */
-				996000	1075000
-				792000	975000
-			>;
 			clock-latency = <61036>; /* two CLK32 periods */
 			clocks = <&clks IMX7D_CLK_ARM>;
 		};
-- 
2.9.0

--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[PATCH 2/2] ARM: dts: imx7d: add clock-frequency to CPU nodes

[Stefan Agner]

Add clock-frequency property to CPU nodes. Avoids warnings like
"/cpus/cpu@0 missing clock-frequency property".

Signed-off-by: Stefan Agner <stefan@agner.ch>
---
 arch/arm/boot/dts/imx7d.dtsi | 2 ++
 arch/arm/boot/dts/imx7s.dtsi | 1 +
 2 files changed, 3 insertions(+)

diff --git a/arch/arm/boot/dts/imx7d.dtsi b/arch/arm/boot/dts/imx7d.dtsi
index d0b199c..f6dee41 100644
--- a/arch/arm/boot/dts/imx7d.dtsi
+++ b/arch/arm/boot/dts/imx7d.dtsi
@@ -51,12 +51,14 @@
 				996000	1075000
 				792000	975000
 			>;
+			clock-frequency = <996000000>;
 		};
 
 		cpu1: cpu@1 {
 			compatible = "arm,cortex-a7";
 			device_type = "cpu";
 			reg = <1>;
+			clock-frequency = <996000000>;
 		};
 	};
 
diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
index 5132e2f..81da211 100644
--- a/arch/arm/boot/dts/imx7s.dtsi
+++ b/arch/arm/boot/dts/imx7s.dtsi
@@ -85,6 +85,7 @@
 			compatible = "arm,cortex-a7";
 			device_type = "cpu";
 			reg = <0>;
+			clock-frequency = <792000000>;
 			clock-latency = <61036>; /* two CLK32 periods */
 			clocks = <&clks IMX7D_CLK_ARM>;
 		};
-- 
2.9.0

Re: [PATCH 1/2] ARM: dts: imx7d: move CPU operating points to imx7d.dtsi

[Shawn Guo]

On Thu, Aug 11, 2016 at 05:11:06PM -0700, Stefan Agner wrote:
> Only i.MX 7Dual SoC supports CPU frequencies of up to 1GHz. The i.MX
> 7Solo can run with up to 800MHz and does so without making use of DVFS
> usually. While the device tree clearly specified a too fast operating
> point for i.MX 7Solo, the kernel did not used it in practise so far
> because the CPUfreq driver does not get loaded on i.MX 7Solo devices
> (since the fsl,imx7s compatible string is not in the list of devices
> making use of the cpufreq-dt driver...).
> 
> Signed-off-by: Stefan Agner <stefan-XLVq0VzYD2Y@public.gmane.org>
> ---
> Hi Shawn,
> 
> This is based on my earlier patchset:
> ARM: dts: imx7d: move ARM platform peripherals inside soc
> 
> This are kind of fixes too, so if possible I would like to see them
> in v4.8, what do you think?

Patch "ARM: dts: imx7d: move ARM platform peripherals inside soc node"
is not really a fix, and the diffstat looks too dramatic to be a -rc
material, so I queued it as a -next patch, and any patch based on it
will have to go through -next as well.

Applied for -next, thanks.

Shawn

> 
> --
> Stefan
> 
>  arch/arm/boot/dts/imx7d.dtsi | 8 ++++++++
>  arch/arm/boot/dts/imx7s.dtsi | 5 -----
>  2 files changed, 8 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/imx7d.dtsi b/arch/arm/boot/dts/imx7d.dtsi
> index 3d77d95..d0b199c 100644
> --- a/arch/arm/boot/dts/imx7d.dtsi
> +++ b/arch/arm/boot/dts/imx7d.dtsi
> @@ -45,6 +45,14 @@
>  
>  / {
>  	cpus {
> +		cpu0: cpu@0 {
> +			operating-points = <
> +				/* KHz	uV */
> +				996000	1075000
> +				792000	975000
> +			>;
> +		};
> +
>  		cpu1: cpu@1 {
>  			compatible = "arm,cortex-a7";
>  			device_type = "cpu";
> diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
> index c63591c..5132e2f 100644
> --- a/arch/arm/boot/dts/imx7s.dtsi
> +++ b/arch/arm/boot/dts/imx7s.dtsi
> @@ -85,11 +85,6 @@
>  			compatible = "arm,cortex-a7";
>  			device_type = "cpu";
>  			reg = <0>;
> -			operating-points = <
> -				/* KHz	uV */
> -				996000	1075000
> -				792000	975000
> -			>;
>  			clock-latency = <61036>; /* two CLK32 periods */
>  			clocks = <&clks IMX7D_CLK_ARM>;
>  		};
> -- 
> 2.9.0
> 
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html