dt-bindings: remoteproc: qcom,shikra-pas: Document Shikra PAS remoteprocs

Document the bindings for the CDSP, LPAICP and MPSS PAS on
the Shikra SoC.

Signed-off-by: Bibek Kumar Patro <bibek.patro@oss.qualcomm.com>
Signed-off-by: Komal Bajaj <komal.bajaj@oss.qualcomm.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260521-shikra-rproc-v3-1-2fca0bbe1ad7@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

Documentation/devicetree/bindings/remoteproc/qcom,shikra-pas.yaml

@@ -0,0 +1,167 @@
+# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/remoteproc/qcom,shikra-pas.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Shikra SoC Peripheral Authentication Service
+
+maintainers:
+  - Bibek Kumar Patro <bibek.patro@oss.qualcomm.com>
+  - Komal Bajaj <komal.bajaj@oss.qualcomm.com>
+
+description:
+  Qualcomm Shikra SoC Peripheral Authentication Service loads and boots
+  firmware on the Qualcomm DSP Hexagon cores.
+
+properties:
+  compatible:
+    enum:
+      - qcom,shikra-cdsp-pas
+      - qcom,shikra-lpaicp-pas
+      - qcom,shikra-mpss-pas
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: XO clock
+
+  clock-names:
+    items:
+      - const: xo
+
+  memory-region:
+    minItems: 1
+    maxItems: 2
+
+  smd-edge: false
+
+  firmware-name:
+    minItems: 1
+    items:
+      - description: Firmware name of the Hexagon core
+      - description: Firmware name of the Hexagon Devicetree
+
+  glink-edge:
+    $ref: /schemas/remoteproc/qcom,glink-edge.yaml#
+    description:
+      Qualcomm G-Link subnode which represents communication edge, channels
+      and devices related to the remoteproc core.
+    unevaluatedProperties: false
+
+  qcom,smem-states:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description: States used by the AP to signal the Hexagon core
+    items:
+      - description: Stop the remote processor
+        items:
+          - description: Phandle to the Shared Memory Point 2 Point device
+              handling the communication with a remote processor
+          - description: Single bit index to toggle in the value sent to
+              the remote processor
+            maximum: 32
+
+  qcom,smem-state-names:
+    description: The names of the state bits used for SMP2P output
+    items:
+      - const: stop
+
+required:
+  - compatible
+  - reg
+  - memory-region
+
+allOf:
+  - $ref: /schemas/remoteproc/qcom,pas-common.yaml#
+
+  - if:
+      properties:
+        compatible:
+          enum:
+            - qcom,shikra-cdsp-pas
+            - qcom,shikra-mpss-pas
+    then:
+      properties:
+        interrupts:
+          minItems: 6
+        interrupt-names:
+          minItems: 6
+        memory-region:
+          maxItems: 1
+        firmware-name:
+          maxItems: 1
+        power-domains:
+          items:
+            - description: CX power domain
+        power-domain-names:
+          items:
+            - const: cx
+
+  - if:
+      properties:
+        compatible:
+          enum:
+            - qcom,shikra-lpaicp-pas
+    then:
+      properties:
+        interrupts:
+          maxItems: 5
+        interrupt-names:
+          maxItems: 5
+        memory-region:
+          minItems: 2
+        firmware-name:
+          minItems: 2
+        power-domains: false
+        power-domain-names: false
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,rpmcc.h>
+    #include <dt-bindings/interconnect/qcom,icc.h>
+    #include <dt-bindings/interconnect/qcom,rpm-icc.h>
+    #include <dt-bindings/interconnect/qcom,shikra.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/power/qcom-rpmpd.h>
+
+    remoteproc@b300000 {
+        compatible = "qcom,shikra-cdsp-pas";
+        reg = <0x0b300000 0x100000>;
+
+        interrupts-extended = <&intc GIC_SPI 265 IRQ_TYPE_EDGE_RISING>,
+                              <&cdsp_smp2p_in 0 IRQ_TYPE_EDGE_RISING>,
+                              <&cdsp_smp2p_in 1 IRQ_TYPE_EDGE_RISING>,
+                              <&cdsp_smp2p_in 2 IRQ_TYPE_EDGE_RISING>,
+                              <&cdsp_smp2p_in 3 IRQ_TYPE_EDGE_RISING>,
+                              <&cdsp_smp2p_in 7 IRQ_TYPE_EDGE_RISING>;
+        interrupt-names = "wdog", "fatal", "ready",
+                          "handover", "stop-ack", "shutdown-ack";
+
+        clocks = <&rpmcc RPM_SMD_XO_CLK_SRC>;
+        clock-names = "xo";
+
+        interconnects = <&mem_noc MASTER_AMPSS_M0 RPM_ALWAYS_TAG
+                         &mc_virt SLAVE_EBI_CH0 RPM_ALWAYS_TAG>;
+
+        power-domains = <&rpmpd RPMHPD_CX>;
+        power-domain-names = "cx";
+
+        memory-region = <&cdsp_mem>;
+
+        qcom,smem-states = <&cdsp_smp2p_out 0>;
+        qcom,smem-state-names = "stop";
+
+        firmware-name = "qcom/shikra/cdsp.mbn";
+
+        glink-edge {
+            interrupts = <GIC_SPI 261 IRQ_TYPE_EDGE_RISING>;
+            mboxes = <&apcs_glb 4>;
+            qcom,remote-pid = <5>;
+            label = "cdsp";
+        };
+    };