dt-bindings: cpufreq: qcom-hw: Add bindings for 8998

The OSM programming addition has been done under the
qcom,cpufreq-hw-8998 compatible name: specify the requirement
of two additional register spaces for this functionality.
This implementation, with the same compatible, has been
tested on MSM8998 and SDM630.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@somainline.org>
[Fixed up for 5.18 by Jami]

Documentation/devicetree/bindings/cpufreq/cpufreq-qcom-hw.yaml

@@ -18,6 +18,10 @@ description: |
 properties:
   compatible:
     oneOf:
+      - description: Non-secure v1 of CPUFREQ HW
+        items:
+          - const: qcom,cpufreq-hw-8998
+
       - description: v1 of CPUFREQ HW
         items:
           - const: qcom,cpufreq-hw
@@ -29,19 +33,9 @@ properties:
               - qcom,sm8250-cpufreq-epss
           - const: qcom,cpufreq-epss
 
-  reg:
-    minItems: 2
-    items:
-      - description: Frequency domain 0 register region
-      - description: Frequency domain 1 register region
-      - description: Frequency domain 2 register region
+  reg: {}
 
-  reg-names:
-    minItems: 2
-    items:
-      - const: freq-domain0
-      - const: freq-domain1
-      - const: freq-domain2
+  reg-names: {}
 
   clocks:
     items:
@@ -56,6 +50,48 @@ properties:
   '#freq-domain-cells':
     const: 1
 
+if:
+  properties:
+    compatible:
+      contains:
+        const: qcom,cpufreq-hw-8998
+then:
+  properties:
+    reg:
+      minItems: 2
+      items:
+        - description: Frequency domain 0 register region
+        - description: Operating State Manager domain 0 register region
+        - description: Frequency domain 1 register region
+        - description: Operating State Manager domain 1 register region
+        - description: PLL ACD domain 0 register region (if ACD programming required)
+        - description: PLL ACD domain 1 register region (if ACD programming required)
+
+    reg-names:
+      minItems: 2
+      items:
+        - const: "osm-domain0"
+        - const: "freq-domain0"
+        - const: "osm-domain1"
+        - const: "freq-domain1"
+        - const: "osm-acd0"
+        - const: "osm-acd1"
+
+else:
+  properties:
+    reg:
+      minItems: 2
+      items:
+        - description: Frequency domain 0 register region
+        - description: Frequency domain 1 register region
+        - description: Frequency domain 2 register region
+    reg-names:
+      minItems: 2
+      items:
+        - const: "freq-domain0"
+        - const: "freq-domain1"
+        - const: "freq-domain2"
+
 required:
   - compatible
   - reg