arm64: boot: dts: update rtsm aemv8 dts with PSCI and idle states

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>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/arch/arm64/boot/dts/rtsm_ve-aemv8a.dts b/arch/arm64/boot/dts/rtsm_ve-aemv8a.dts
index 572005ea2217ff9a2480c2d6f9ff4e2aa5091e98..410a62c085301d3a5f2562eb7afe0a53b692cff4 100644 (file)
--- 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>;
                };
        };