[PATCH 1/2] dt-bindings: firmware: document rsu-handle for intel stratix10-svc

[tze . yee . ng]

From: Tze Yee Ng <tze.yee.ng@xxxxxxxxxx>

Add the optional rsu-handle property to the intel,stratix10-svc binding.
It holds a phandle to the QSPI boot partition (qspi_boot) for U-Boot
remote system update (RSU) handoff.

Extend the example with a minimal QSPI fixed-partitions node so the
qspi_boot label is defined where rsu-handle is used.

Signed-off-by: Tze Yee Ng <tze.yee.ng@xxxxxxxxxx>
---
 .../firmware/intel,stratix10-svc.yaml         | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/Documentation/devicetree/bindings/firmware/intel,stratix10-svc.yaml b/Documentation/devicetree/bindings/firmware/intel,stratix10-svc.yaml
index b42cfa78b28b..5b90058f4f6b 100644
--- a/Documentation/devicetree/bindings/firmware/intel,stratix10-svc.yaml
+++ b/Documentation/devicetree/bindings/firmware/intel,stratix10-svc.yaml
@@ -58,6 +58,12 @@ properties:
   iommus:
     maxItems: 1
 
+  rsu-handle:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Phandle to the QSPI boot partition node (qspi_boot), used by U-Boot
+      during remote system update flow.
+
   fpga-mgr:
     $ref: /schemas/fpga/intel,stratix10-soc-fpga-mgr.yaml
     description: Optional child node for fpga manager to perform fabric configuration.
@@ -94,11 +100,30 @@ examples:
       };
     };
 
+    qspi@0 {
+      compatible = "jedec,spi-nor";
+      reg = <0x0 0x1000>;
+      #address-cells = <1>;
+      #size-cells = <1>;
+
+      partitions {
+        compatible = "fixed-partitions";
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        qspi_boot: partition@0 {
+          label = "u-boot";
+          reg = <0x0 0x100000>;
+        };
+      };
+    };
+
     firmware {
       svc {
         compatible = "intel,stratix10-svc";
         method = "smc";
         memory-region = <&service_reserved>;
+        rsu-handle = <&qspi_boot>;
 
         fpga-mgr {
           compatible = "intel,stratix10-soc-fpga-mgr";
-- 
2.43.7