diff mbox

[RFC,v3,6/6] arm64: boot: dts: update rtsm aemv8 dts with PSCI and idle states

Message ID 1399399483-17112-7-git-send-email-lorenzo.pieralisi@arm.com (mailing list archive)
State RFC, archived
Headers show

Commit Message

Lorenzo Pieralisi May 6, 2014, 6:04 p.m. UTC 
This patch updates the RTSM dts file with PSCI bindings and nodes
describing the AEMv8 model idle states parameters.

PSCI function IDs compliancy with PSCI v0.2 is still under development
so this patch provides PSCI function IDs for demonstration purposes only.

Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
---
 arch/arm64/boot/dts/rtsm_ve-aemv8a.dts | 49 ++++++++++++++++++++++++++++------
 1 file changed, 41 insertions(+), 8 deletions(-)

Comments

Sebastian Capella May 9, 2014, 12:51 a.m. UTC | #1 
Quoting Lorenzo Pieralisi (2014-05-06 11:04:43)
> This patch updates the RTSM dts file with PSCI bindings and nodes
> describing the AEMv8 model idle states parameters.
> 
> PSCI function IDs compliancy with PSCI v0.2 is still under development
> so this patch provides PSCI function IDs for demonstration purposes only.
> 
> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>

Reviewed-by: Sebastian Capella <sebastian.capella@linaro.org>

Thanks!

Sebastian
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diff mbox

Patch

diff --git a/arch/arm64/boot/dts/rtsm_ve-aemv8a.dts b/arch/arm64/boot/dts/rtsm_ve-aemv8a.dts
index d79de9c..fd23737 100644
--- a/arch/arm64/boot/dts/rtsm_ve-aemv8a.dts
+++ b/arch/arm64/boot/dts/rtsm_ve-aemv8a.dts
@@ -27,37 +27,70 @@ 
 		serial3 = &v2m_serial3;
 	};
 
+	psci {
+		compatible = "arm,psci";
+		method = "smc";
+		/*
+		 * Function IDs usage and compliancy with PSCI v0.2 still
+		 * under discussion.  Current IDs should be considered
+		 * temporary for demonstration purposes.
+		 */
+		cpu_suspend = <0x84000001>;
+		cpu_off = <0x84000002>;
+		cpu_on = <0x84000003>;
+	};
+
 	cpus {
 		#address-cells = <2>;
 		#size-cells = <0>;
 
+		idle-states {
+			entry-method = "arm,psci";
+
+			CPU_SLEEP_0: cpu-sleep-0 {
+				compatible = "arm,idle-state";
+				entry-method-param = <0x0010000>;
+				entry-latency-us = <40>;
+				exit-latency-us = <100>;
+				min-residency-us = <150>;
+			};
+
+			CLUSTER_SLEEP_0: cluster-sleep-0 {
+				compatible = "arm,idle-state";
+				entry-method-param = <0x1010000>;
+				entry-latency-us = <500>;
+				exit-latency-us = <1000>;
+				min-residency-us = <2500>;
+			};
+		};
+
 		cpu@0 {
 			device_type = "cpu";
 			compatible = "arm,armv8";
 			reg = <0x0 0x0>;
-			enable-method = "spin-table";
-			cpu-release-addr = <0x0 0x8000fff8>;
+			enable-method = "psci";
+			cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
 		};
 		cpu@1 {
 			device_type = "cpu";
 			compatible = "arm,armv8";
 			reg = <0x0 0x1>;
-			enable-method = "spin-table";
-			cpu-release-addr = <0x0 0x8000fff8>;
+			enable-method = "psci";
+			cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
 		};
 		cpu@2 {
 			device_type = "cpu";
 			compatible = "arm,armv8";
 			reg = <0x0 0x2>;
-			enable-method = "spin-table";
-			cpu-release-addr = <0x0 0x8000fff8>;
+			enable-method = "psci";
+			cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
 		};
 		cpu@3 {
 			device_type = "cpu";
 			compatible = "arm,armv8";
 			reg = <0x0 0x3>;
-			enable-method = "spin-table";
-			cpu-release-addr = <0x0 0x8000fff8>;
+			enable-method = "psci";
+			cpu-idle-states = <&CPU_SLEEP_0 &CLUSTER_SLEEP_0>;
 		};
 	};