[PATCH net-next 09/10] dt-bindings: soc: mediatek: move dlm in a dedicated dts node

[Lorenzo Bianconi]

Since the cpuboot memory region is not part of the RAM SoC, move dlm in
a deidicated syscon node.
This patch helps to keep backward-compatibility with older version of
uboot codebase where we have a limit of 8 reserved-memory dts child
nodes.

Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
---
 .../arm/mediatek/mediatek,mt7622-wed.yaml     | 12 +++--
 .../soc/mediatek/mediatek,mt7986-wo-dlm.yaml  | 46 +++++++++++++++++++
 2 files changed, 54 insertions(+), 4 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/soc/mediatek/mediatek,mt7986-wo-dlm.yaml

diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-wed.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-wed.yaml
index 5d2397ec5891..e4707880eca7 100644
--- a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-wed.yaml
+++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-wed.yaml
@@ -32,13 +32,11 @@ properties:
   memory-region:
     items:
       - description: firmware EMI region
-      - description: firmware DLM region
       - description: firmware CPU DATA region
 
   memory-region-names:
     items:
       - const: wo-emi
-      - const: wo-dlm
       - const: wo-data
 
   mediatek,wo-ccif:
@@ -53,6 +51,10 @@ properties:
     $ref: /schemas/types.yaml#/definitions/phandle
     description: mediatek wed-wo ilm interface.
 
+  mediatek,wo-dlm:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: mediatek wed-wo dlm interface.
+
 allOf:
   - if:
       properties:
@@ -66,6 +68,7 @@ allOf:
         mediatek,wo-ccif: false
         mediatek,wo-cpuboot: false
         mediatek,wo-ilm: false
+        mediatek,wo-dlm: false
 
 required:
   - compatible
@@ -100,10 +103,11 @@ examples:
         reg = <0 0x15010000 0 0x1000>;
         interrupts = <GIC_SPI 205 IRQ_TYPE_LEVEL_HIGH>;
 
-        memory-region = <&wo_emi>, <&wo_dlm>, &wo_data>;
-        memory-region-names = "wo-emi", "wo-dlm", "wo-data";
+        memory-region = <&wo_emi>, <&wo_data>;
+        memory-region-names = "wo-emi", "wo-data";
         mediatek,wo-ccif = <&wo_ccif0>;
         mediatek,wo-cpuboot = <&wo_cpuboot>;
         mediatek,wo-ilm = <&wo_ilm>;
+        mediatek,wo-dlm = <&wo_dlm>;
       };
     };
diff --git a/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt7986-wo-dlm.yaml b/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt7986-wo-dlm.yaml
new file mode 100644
index 000000000000..2b9c6a8ef918
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt7986-wo-dlm.yaml
@@ -0,0 +1,46 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/soc/mediatek/mediatek,mt7986-wo-dlm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek Wireless Ethernet Dispatch (WED) WO DLM firmware interface for MT7986
+
+maintainers:
+  - Lorenzo Bianconi <lorenzo at kernel.org>
+  - Felix Fietkau <nbd at nbd.name>
+
+description:
+  The MediaTek wo-dlm (Data Lifecycle Management) provides a configuration
+  interface for WED WO firmware rx rings, including firmware I/O descriptor
+  ring, feedback command ring. WED WO controller is used to perform offload
+  rx packet processing (e.g. 802.11 aggregation packet reordering or rx
+  header translation) on MT7986 soc.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - mediatek,mt7986-wo-dlm
+      - const: syscon
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      syscon at 151e8000 {
+        compatible = "mediatek,mt7986-wo-dlm", "syscon";
+        reg = <0 0x151e8000 0 0x2000>;
+      };
+    };
-- 
2.39.2