From: Manikanta Mylavarapu <quic_mmanikan@quicinc.com>

Add new binding document for hexagon based WCSS secure PIL remoteproc.
IPQ5018, IPQ5332 and IPQ9574 follow secure PIL remoteproc.

Signed-off-by: Manikanta Mylavarapu <quic_mmanikan@quicinc.com>
Signed-off-by: Gokul Sriram Palanisamy <quic_gokulsri@quicinc.com>
Signed-off-by: George Moussalem <george.moussalem@outlook.com>
[ Dropped ipq5424 support ]
Signed-off-by: Varadarajan Narayanan <varadarajan.narayanan@oss.qualcomm.com>
---
v8: Dropped Krzysztof's 'Reviewed-by' as the bindings file has changed significantly
    Drop ipq5424 support
    Update example to ipq9574 instead of ipq5424
    Change 'mboxes' description
---
 .../remoteproc/qcom,wcss-sec-pil.yaml         | 172 ++++++++++++++++++
 1 file changed, 172 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/remoteproc/qcom,wcss-sec-pil.yaml

diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,wcss-sec-pil.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,wcss-sec-pil.yaml
new file mode 100644
index 000000000000..0fe04e0a4ca5
--- /dev/null
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,wcss-sec-pil.yaml
@@ -0,0 +1,172 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/remoteproc/qcom,wcss-sec-pil.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm WCSS Secure Peripheral Image Loader
+
+maintainers:
+  - Manikanta Mylavarapu <quic_mmanikan@quicinc.com>
+
+description:
+  Wireless Connectivity Subsystem (WCSS) Secure Peripheral Image Loader loads
+  firmware and power up QDSP6 remoteproc on the Qualcomm IPQ series SoC.
+
+properties:
+  compatible:
+    enum:
+      - qcom,ipq5018-wcss-sec-pil
+      - qcom,ipq5332-wcss-sec-pil
+      - qcom,ipq9574-wcss-sec-pil
+
+  reg:
+    maxItems: 1
+
+  firmware-name:
+    maxItems: 1
+    description: Firmware name for the Hexagon core
+
+  interrupts:
+    items:
+      - description: Watchdog interrupt
+      - description: Fatal interrupt
+      - description: Ready interrupt
+      - description: Handover interrupt
+      - description: Stop acknowledge interrupt
+
+  interrupt-names:
+    items:
+      - const: wdog
+      - const: fatal
+      - const: ready
+      - const: handover
+      - const: stop-ack
+
+  clocks:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+
+  clock-names:
+    $ref: /schemas/types.yaml#/definitions/string-array
+
+  mboxes:
+    items:
+      - description: TMECom mailbox driver
+
+  qcom,smem-states:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description: States used by the AP to signal the remote processor
+    items:
+      - description: Stop Q6
+      - description: Shutdown Q6
+
+  qcom,smem-state-names:
+    description:
+      Names of the states used by the AP to signal the remote processor
+    items:
+      - const: stop
+      - const: shutdown
+
+  memory-region:
+    items:
+      - description: Q6 reserved region
+
+  glink-edge:
+    $ref: /schemas/remoteproc/qcom,glink-edge.yaml#
+    description:
+      Qualcomm G-Link subnode which represents communication edge, channels
+      and devices related to the Modem.
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - firmware-name
+  - interrupts
+  - interrupt-names
+  - qcom,smem-states
+  - qcom,smem-state-names
+  - memory-region
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: qcom,ipq5018-wcss-sec-pil
+    then:
+      properties:
+        clocks:
+          items:
+            - description: sleep clock
+            - description: AHB interconnect clock
+        clock-names:
+          items:
+            - const: sleep
+            - const: interconnect
+      required:
+        - clocks
+        - clock-names
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: qcom,ipq5332-wcss-sec-pil
+    then:
+      properties:
+        clocks:
+          items:
+            - description: sleep clock
+        clock-names:
+          items:
+            - const: sleep
+      required:
+        - clocks
+        - clock-names
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,ipq9574-wcss-sec-pil
+    then:
+      properties:
+        clocks: false
+        clock-names: false
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    q6v5_wcss: remoteproc@cd00000 {
+        compatible = "qcom,ipq9574-wcss-sec-pil";
+        reg = <0x0cd00000 0x10000>;
+        firmware-name = "ath11k/IPQ9574/hw1.0/q6_fw.mbn";
+        interrupts-extended = <&intc GIC_SPI 325 IRQ_TYPE_EDGE_RISING>,
+                              <&smp2p_wcss_in 0 IRQ_TYPE_NONE>,
+                              <&smp2p_wcss_in 1 IRQ_TYPE_NONE>,
+                              <&smp2p_wcss_in 2 IRQ_TYPE_NONE>,
+                              <&smp2p_wcss_in 3 IRQ_TYPE_NONE>;
+        interrupt-names = "wdog",
+                          "fatal",
+                          "ready",
+                          "handover",
+                          "stop-ack";
+
+        qcom,smem-states = <&smp2p_wcss_out 1>,
+                           <&smp2p_wcss_out 0>;
+        qcom,smem-state-names = "stop",
+                                "shutdown";
+        memory-region = <&q6_region>;
+
+        glink-edge {
+            interrupts = <GIC_SPI 321 IRQ_TYPE_EDGE_RISING>;
+            label = "rtr";
+            qcom,remote-pid = <1>;
+            mboxes = <&apcs_glb 8>;
+        };
+    };
-- 
2.34.1