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Subject[PATCH v1 3/5] dt-bindings: arm: Add cpu-idle-states to Tegra194 CPU nodes
Date
This patch adds cpu-idle-states and corresponding state nodes to
Tegra194 CPU in dt-binding document

Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
---
.../bindings/arm/nvidia,tegra194-ccplex.yaml | 53 ++++++++++++++++++++++
1 file changed, 53 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/nvidia,tegra194-ccplex.yaml b/Documentation/devicetree/bindings/arm/nvidia,tegra194-ccplex.yaml
index c9675c4..e1a5005 100644
--- a/Documentation/devicetree/bindings/arm/nvidia,tegra194-ccplex.yaml
+++ b/Documentation/devicetree/bindings/arm/nvidia,tegra194-ccplex.yaml
@@ -30,6 +30,36 @@ properties:
Specifies the bpmp node that needs to be queried to get
operating point data for all CPUs.

+ cluster-deepest-power-state:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: CPU cluster deepest power state ID.
+
+patternProperties:
+ "^[a-z0-9]+$":
+ type: object
+ description: |
+ CPU core idle state nodes.
+ Refer to Documentation/devicetree/bindings/arm/idle-states.yaml
+
+ properties:
+ compatible:
+ enum:
+ - nvidia,tegra194-cpuidle-core
+
+ cpu_crossover_thresholds:
+ type: object
+ description: CPU idle states crossover threshold time in uSec.
+
+ patternProperties:
+ "^[a-z0-9]+$":
+ type: object
+
+ properties:
+ crossover_c1_c6:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ crossover_cc1_cc6:
+ $ref: /schemas/types.yaml#/definitions/uint32
+
additionalProperties: true

examples:
@@ -39,12 +69,14 @@ examples:
nvidia,bpmp = <&bpmp>;
#address-cells = <1>;
#size-cells = <0>;
+ cluster-deepest-power-state = <0x6>;

cpu0_0: cpu@0 {
compatible = "nvidia,tegra194-carmel";
device_type = "cpu";
reg = <0x0>;
enable-method = "psci";
+ cpu-idle-states = <&C6>;
};

cpu0_1: cpu@1 {
@@ -52,6 +84,7 @@ examples:
device_type = "cpu";
reg = <0x001>;
enable-method = "psci";
+ cpu-idle-states = <&C6>;
};

cpu1_0: cpu@100 {
@@ -59,6 +92,7 @@ examples:
device_type = "cpu";
reg = <0x100>;
enable-method = "psci";
+ cpu-idle-states = <&C6>;
};

cpu1_1: cpu@101 {
@@ -66,6 +100,25 @@ examples:
device_type = "cpu";
reg = <0x101>;
enable-method = "psci";
+ cpu-idle-states = <&C6>;
+ };
+
+ cpu_core_power_states {
+ C6: c6 {
+ compatible = "nvidia,tegra194-cpuidle-core";
+ idle-state-name = "CPU powergated, state retained";
+ wakeup-latency-us = <2000>;
+ min-residency-us = <30000>;
+ arm,psci-suspend-param = <0x6>;
+ status = "okay";
+ };
+ };
+
+ cpu_crossover_thresholds {
+ thresholds {
+ crossover_c1_c6 = <30000>;
+ crossover_cc1_cc6 = <80000>;
};
+ };
};
...
--
2.7.4
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