[PATCH v4 02/19] dt-bindings: sram: qcom,imem: Add minidump-sram pattern property

[Mukesh Ojha]

The qcom,imem binding describes a single word in always-on SRAM shared
between the operating system (OS) and boot firmware. Before DDR is
initialized on the warm reset following a crash, firmware reads this
word to decide where to deliver the minidump, and the OS is expected to
select one of the destinations: either USB upload to a host PC or save
to on-device storage. If nothing is selected by the OS, USB is the
default.

Signed-off-by: Mukesh Ojha <mukesh.ojha@xxxxxxxxxxxxxxxx>
---
 .../devicetree/bindings/sram/qcom,imem.yaml      | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/Documentation/devicetree/bindings/sram/qcom,imem.yaml b/Documentation/devicetree/bindings/sram/qcom,imem.yaml
index c63026904061..17adced6d3a4 100644
--- a/Documentation/devicetree/bindings/sram/qcom,imem.yaml
+++ b/Documentation/devicetree/bindings/sram/qcom,imem.yaml
@@ -67,6 +67,22 @@ properties:
     $ref: /schemas/power/reset/syscon-reboot-mode.yaml#
 
 patternProperties:
+  "^minidump-sram@[0-9a-f]+$":
+    type: object
+    description:
+      A word in always-on SRAM shared between the kernel and boot firmware.
+      Before DDR is initialised on the warm reset following a crash, firmware
+      reads this word to decide where to deliver the minidump (USB or storage).
+
+    properties:
+      reg:
+        maxItems: 1
+
+    required:
+      - reg
+
+    additionalProperties: false
+
   "^modem-tables@[0-9a-f]+$":
     type: object
     description:
-- 
2.53.0