[PATCH v2 1/2] dt: bindings: add new DT entry for ath11k PCI device support

[Anilkumar Kolli]

Ath11k driver supports PCI devices such as QCN9074/QCA6390.
Ath11k firmware uses host DDR memory. DT entry is used to reserve
these host DDR memory regions, send these memory base
addresses using DT entries.

Signed-off-by: Anilkumar Kolli <akolli at codeaurora.org>
---
V2:
  - Use reserved-memory (Rob)

 .../bindings/net/wireless/qcom,ath11k.yaml         | 48 ++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath11k.yaml b/Documentation/devicetree/bindings/net/wireless/qcom,ath11k.yaml
index 85c2f699d602..5a8994f6cb10 100644
--- a/Documentation/devicetree/bindings/net/wireless/qcom,ath11k.yaml
+++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath11k.yaml
@@ -150,6 +150,12 @@ properties:
       string to uniquely identify variant of the calibration data in the
       board-2.bin for designs with colliding bus and device specific ids
 
+  memory-region:
+    maxItems: 1
+    description:
+      phandle to a node describing reserved memory (System RAM memory)
+      used by ath11k firmware (see bindings/reserved-memory/reserved-memory.txt)
+
 required:
   - compatible
   - reg
@@ -279,3 +285,45 @@ examples:
                           "tcl2host-status-ring";
         qcom,rproc = <&q6v5_wcss>;
     };
+
+    memory {
+        device_type = "memory";
+        reg = <0x0 0x40000000 0x0 0x20000000>;
+    };
+
+    reserved-memory {
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        qcn9074_pcie0: qcn9074_pcie0 at 51100000 {
+            no-map;
+            reg = <0x0 0x51100000 0x0 0x03500000>;
+        };
+
+        qcn9074_pcie1: qcn9074_pcie1 at 54600000 {
+            no-map;
+            reg = <0x0 0x54600000 0x0 0x03500000>;
+        };
+    };
+
+    pcie0_rp: pcie0_rp {
+        reg = <0 0 0 0 0>;
+
+        status = "ok";
+        ath11k_0: ath11k at 0 {
+            reg = <0 0 0 0 0 >;
+            memory-region = <&qcn9074_pcie0>;
+        };
+    };
+
+    pcie1_rp: pcie1_rp {
+        reg = <0 0 0 0 0>;
+
+        status = "ok";
+        ath11k_1: ath11k at 1 {
+            reg = <0 0 0 0 0 >;
+            memory-region = <&qcn9074_pcie1>;
+        };
+    };
+
-- 
2.7.4