arm64: tegra: Add CPU idle states properties for Tegra210

Add idle states properties for generic ARM CPU idle driver. This
includes a cpu-sleep state which is the power down state of CPU cores.

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
index abbb686bd8ba..79cedd36ffad 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
@@ -1371,24 +1371,43 @@
                                  <&dfll>;
                         clock-names = "cpu_g", "pll_x", "pll_p", "dfll";
                         clock-latency = <300000>;
+                        cpu-idle-states = <&CPU_SLEEP>;
                 };
 
                 cpu@1 {
                         device_type = "cpu";
                         compatible = "arm,cortex-a57";
                         reg = <1>;
+                        cpu-idle-states = <&CPU_SLEEP>;
                 };
 
                 cpu@2 {
                         device_type = "cpu";
                         compatible = "arm,cortex-a57";
                         reg = <2>;
+                        cpu-idle-states = <&CPU_SLEEP>;
                 };
 
                 cpu@3 {
                         device_type = "cpu";
                         compatible = "arm,cortex-a57";
                         reg = <3>;
+                        cpu-idle-states = <&CPU_SLEEP>;
+                };
+
+                idle-states {
+                        entry-method = "psci";
+
+                        CPU_SLEEP: cpu-sleep {
+                                compatible = "arm,idle-state";
+                                arm,psci-suspend-param = <0x40000007>;
+                                entry-latency-us = <100>;
+                                exit-latency-us = <30>;
+                                min-residency-us = <1000>;
+                                wakeup-latency-us = <130>;
+                                idle-state-name = "cpu-sleep";
+                                status = "disabled";
+                        };
                 };
         };