1 files changed, 49 insertions, 25 deletions
diff --git a/Documentation/devicetree/bindings/mips/brcm/soc.yaml b/Documentation/devicetree/bindings/mips/brcm/soc.yaml
index 975945ca2888..461a8c063313 100644
--- a/Documentation/devicetree/bindings/mips/brcm/soc.yaml
+++ b/Documentation/devicetree/bindings/mips/brcm/soc.yaml
@@ -55,6 +55,16 @@ properties:
          under the "cpus" node.
         $ref: /schemas/types.yaml#/definitions/uint32
 
+      brcm,bmips-cbr-reg:
+        description: Reference address of the CBR.
+          Some SoC suffer from a BUG where CBR(Core Base Register)
+          address might be badly or never initialized by the Bootloader
+          or reading it from co-processor registers, if the system boots
+          from secondary CPU, results in invalid address.
+          The CBR address is always the same on the SoC hence it
+          can be provided in DT to handle these broken case.
+        $ref: /schemas/types.yaml#/definitions/uint32
+
     patternProperties:
       "^cpu@[0-9]$":
         type: object
@@ -64,33 +74,47 @@ properties:
     required:
       - mips-hpt-frequency
 
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - brcm,bcm6358
+          - brcm,bcm6368
+
+then:
+  properties:
+    cpus:
+      required:
+        - brcm,bmips-cbr-reg
+
 additionalProperties: true
 
 examples:
   - |
-     / {
-         compatible = "brcm,bcm3368";
-         #address-cells = <1>;
-         #size-cells = <1>;
-         model = "Broadcom 3368";
-
-         cpus {
-           #address-cells = <1>;
-           #size-cells = <0>;
-
-           mips-hpt-frequency = <150000000>;
-
-           cpu@0 {
-             compatible = "brcm,bmips4350";
-             device_type = "cpu";
-             reg = <0>;
-           };
-
-           cpu@1 {
-             compatible = "brcm,bmips4350";
-             device_type = "cpu";
-             reg = <1>;
-           };
-         };
-       };
+    / {
+        compatible = "brcm,bcm3368";
+        #address-cells = <1>;
+        #size-cells = <1>;
+        model = "Broadcom 3368";
+
+        cpus {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            mips-hpt-frequency = <150000000>;
+
+            cpu@0 {
+                compatible = "brcm,bmips4350";
+                device_type = "cpu";
+                reg = <0>;
+            };
+
+            cpu@1 {
+                compatible = "brcm,bmips4350";
+                device_type = "cpu";
+                reg = <1>;
+            };
+        };
+    };
 ...