dt-bindings: Added dt-binding for cpuss sleep stats

This change adds dt-bindings for qcom_cpuss_sleep_stats driver.
Hardware lpm count and residency can be read from this driver.

Change-Id: Ic4ca96b790cde3a988e62dea2331ca80591ffb83
Signed-off-by: Maulik Shah <quic_mkshah@quicinc.com>
Signed-off-by: Swetha Chikkaboraiah <quic_schikk@quicinc.com>
Signed-off-by: Prakash Yadachi <quic_pyadachi@quicinc.com>

bindings/soc/qcom/cpuss-sleep-stats.yaml

@@ -0,0 +1,86 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/soc/qcom/cpuss-sleep-stats.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Qualcomm Technologies, Inc. cpuss sleep stats
+
+maintainers:
+        - Maulik Shah <quic_mkshah@quicinc.com>
+
+description:
+ The low power mode counts and residency in the low power mode is maintained in
+ the hardware. The cpu sleep stats allows to read this configuration and display
+ the same.
+ This driver creates debugfs entry for all enabled lpm and provide LPM count and
+ Residency.
+
+properties:
+  compatible:
+    enum:
+      - qcom,cpuss-sleep-stats
+
+  reg:
+    maxItems: 10
+    description: cpuss sleep stats RAM base register region.
+
+  reg-names:
+    items:
+      - const: seq_lpm_cntr_cfg_cpu0
+      - const: seq_lpm_cntr_cfg_cpu1
+      - const: seq_lpm_cntr_cfg_cpu2
+      - const: seq_lpm_cntr_cfg_cpu3
+      - const: seq_lpm_cntr_cfg_cpu4
+      - const: seq_lpm_cntr_cfg_cpu5
+      - const: seq_lpm_cntr_cfg_cpu6
+      - const: seq_lpm_cntr_cfg_cpu7
+      - const: l3_seq_lpm_cntr_cfg
+      - const: apss_seq_mem_base
+
+  num-cpus:
+   const: 8
+   description: provides information about the number of CPUs in the system.
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - num-cpus
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,cpuss-sleep-stats
+    then:
+      properties:
+        reg:
+          items:
+            - description: cpuss sleep stats RAM base register region.
+        reg-names:
+          items:
+            - description: names corresponding to each reg property value.
+        num-cpus:
+          items:
+            - description: provides information about the number of CPUs in the system.
+
+additionalProperties: false
+
+examples:
+  - |
+    cpuss-sleep-stats@18000054 {
+        compatible = "qcom,cpuss-sleep-stats";
+        reg = <0x18000054 0x4>, <0x18010054 0x4>, <0x18020054 0x4>,
+              <0x18030054 0x4>, <0x18040054 0x4>, <0x18050054 0x4>,
+              <0x18060054 0x4>, <0x18070054 0x4>, <0x18080098 0x4>,
+              <0x180C0000 0x10000>;
+        reg-names = "seq_lpm_cntr_cfg_cpu0", "seq_lpm_cntr_cfg_cpu1",
+                    "seq_lpm_cntr_cfg_cpu2", "seq_lpm_cntr_cfg_cpu3",
+                    "seq_lpm_cntr_cfg_cpu4", "seq_lpm_cntr_cfg_cpu5",
+                    "seq_lpm_cntr_cfg_cpu6", "seq_lpm_cntr_cfg_cpu7",
+                    "l3_seq_lpm_cntr_cfg", "apss_seq_mem_base";
+        num-cpus = <8>;
+     };