From: lorenzo.pieralisi@arm.com (Lorenzo Pieralisi)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3] arm64: dts: juno: Add idle-states to device tree
Date: Wed, 9 Dec 2015 15:19:45 +0000 [thread overview]
Message-ID: <20151209151945.GA7709@red-moon> (raw)
In-Reply-To: <1449654053.2818.6.camel@linaro.org>
[CC'ed Arnd, Olof and Kevin]
On Wed, Dec 09, 2015 at 09:40:53AM +0000, Jon Medhurst (Tixy) wrote:
> This patch adds idle-states bindings data collected through a set of
> benchmarking experiments (latency and energy consumption) on Juno
> boards. Latencies data represents the worst case scenarios as required
> by the DT idle-states bindings.
>
> Signed-off-by: Jon Medhurst <tixy@linaro.org>
> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
> ---
>
> I don't know if this needs any other Ack or can finally go in (through
> arm soc tree?)
I think it can be pulled as-is as far as I am concerned.
Thanks,
Lorenzo
> Changes since v2:
> - Updated commit message to Lorenzo's suggested text.
>
> Changes since v1:
> - Updated latency times to those provided by Lorenzo
> - Included Juno r1 dt
>
> arch/arm64/boot/dts/arm/juno-r1.dts | 28 ++++++++++++++++++++++++++++
> arch/arm64/boot/dts/arm/juno.dts | 28 ++++++++++++++++++++++++++++
> 2 files changed, 56 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/arm/juno-r1.dts b/arch/arm64/boot/dts/arm/juno-r1.dts
> index 93bc3d7..8826f83 100644
> --- a/arch/arm64/boot/dts/arm/juno-r1.dts
> +++ b/arch/arm64/boot/dts/arm/juno-r1.dts
> @@ -60,6 +60,28 @@
> };
> };
>
> + idle-states {
> + entry-method = "arm,psci";
> +
> + CPU_SLEEP_0: cpu-sleep-0 {
> + compatible = "arm,idle-state";
> + arm,psci-suspend-param = <0x0010000>;
> + local-timer-stop;
> + entry-latency-us = <300>;
> + exit-latency-us = <1200>;
> + min-residency-us = <2000>;
> + };
> +
> + CLUSTER_SLEEP_0: cluster-sleep-0 {
> + compatible = "arm,idle-state";
> + arm,psci-suspend-param = <0x1010000>;
> + local-timer-stop;
> + entry-latency-us = <300>;
> + exit-latency-us = <1200>;
> + min-residency-us = <2500>;
> + };
> + };
> +
> A57_0: cpu at 0 {
> compatible = "arm,cortex-a57","arm,armv8";
> reg = <0x0 0x0>;
> @@ -67,6 +89,7 @@
> enable-method = "psci";
> next-level-cache = <&A57_L2>;
> clocks = <&scpi_dvfs 0>;
> + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
> };
>
> A57_1: cpu at 1 {
> @@ -76,6 +99,7 @@
> enable-method = "psci";
> next-level-cache = <&A57_L2>;
> clocks = <&scpi_dvfs 0>;
> + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
> };
>
> A53_0: cpu at 100 {
> @@ -85,6 +109,7 @@
> enable-method = "psci";
> next-level-cache = <&A53_L2>;
> clocks = <&scpi_dvfs 1>;
> + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
> };
>
> A53_1: cpu at 101 {
> @@ -94,6 +119,7 @@
> enable-method = "psci";
> next-level-cache = <&A53_L2>;
> clocks = <&scpi_dvfs 1>;
> + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
> };
>
> A53_2: cpu at 102 {
> @@ -103,6 +129,7 @@
> enable-method = "psci";
> next-level-cache = <&A53_L2>;
> clocks = <&scpi_dvfs 1>;
> + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
> };
>
> A53_3: cpu at 103 {
> @@ -112,6 +139,7 @@
> enable-method = "psci";
> next-level-cache = <&A53_L2>;
> clocks = <&scpi_dvfs 1>;
> + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
> };
>
> A57_L2: l2-cache0 {
> diff --git a/arch/arm64/boot/dts/arm/juno.dts b/arch/arm64/boot/dts/arm/juno.dts
> index 53442b5..dcfcf15 100644
> --- a/arch/arm64/boot/dts/arm/juno.dts
> +++ b/arch/arm64/boot/dts/arm/juno.dts
> @@ -60,6 +60,28 @@
> };
> };
>
> + idle-states {
> + entry-method = "arm,psci";
> +
> + CPU_SLEEP_0: cpu-sleep-0 {
> + compatible = "arm,idle-state";
> + arm,psci-suspend-param = <0x0010000>;
> + local-timer-stop;
> + entry-latency-us = <300>;
> + exit-latency-us = <1200>;
> + min-residency-us = <2000>;
> + };
> +
> + CLUSTER_SLEEP_0: cluster-sleep-0 {
> + compatible = "arm,idle-state";
> + arm,psci-suspend-param = <0x1010000>;
> + local-timer-stop;
> + entry-latency-us = <300>;
> + exit-latency-us = <1200>;
> + min-residency-us = <2500>;
> + };
> + };
> +
> A57_0: cpu at 0 {
> compatible = "arm,cortex-a57","arm,armv8";
> reg = <0x0 0x0>;
> @@ -67,6 +89,7 @@
> enable-method = "psci";
> next-level-cache = <&A57_L2>;
> clocks = <&scpi_dvfs 0>;
> + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
> };
>
> A57_1: cpu at 1 {
> @@ -76,6 +99,7 @@
> enable-method = "psci";
> next-level-cache = <&A57_L2>;
> clocks = <&scpi_dvfs 0>;
> + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
> };
>
> A53_0: cpu at 100 {
> @@ -85,6 +109,7 @@
> enable-method = "psci";
> next-level-cache = <&A53_L2>;
> clocks = <&scpi_dvfs 1>;
> + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
> };
>
> A53_1: cpu at 101 {
> @@ -94,6 +119,7 @@
> enable-method = "psci";
> next-level-cache = <&A53_L2>;
> clocks = <&scpi_dvfs 1>;
> + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
> };
>
> A53_2: cpu at 102 {
> @@ -103,6 +129,7 @@
> enable-method = "psci";
> next-level-cache = <&A53_L2>;
> clocks = <&scpi_dvfs 1>;
> + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
> };
>
> A53_3: cpu at 103 {
> @@ -112,6 +139,7 @@
> enable-method = "psci";
> next-level-cache = <&A53_L2>;
> clocks = <&scpi_dvfs 1>;
> + cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
> };
>
> A57_L2: l2-cache0 {
> --
> 2.1.4
>
>
>
next prev parent reply other threads:[~2015-12-09 15:19 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-09 9:40 [PATCH v3] arm64: dts: juno: Add idle-states to device tree Jon Medhurst (Tixy)
2015-12-09 15:19 ` Lorenzo Pieralisi [this message]
2015-12-16 10:33 ` Lorenzo Pieralisi
2015-12-22 19:23 ` Olof Johansson
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