From 38a85b9d95c7a7c2bf12a0e73ef974136318f15f Mon Sep 17 00:00:00 2001
From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Date: Tue, 7 Jun 2022 19:18:36 +0200
Subject: dt-bindings: sram: qcom,imem: add IMEM memory region

Add bindings for IMEM memory region (like SRAM) used on several
Qualcomm SoCs.  In the downstream (vendor) tree, it comes with several
children used for debugging purposes.  The upstreamed parts are much
smaller - just image loader and syscon reboot.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220607171848.535128-2-krzysztof.kozlowski@linaro.org
---
 .../devicetree/bindings/sram/qcom,imem.yaml        | 75 ++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sram/qcom,imem.yaml

diff --git a/Documentation/devicetree/bindings/sram/qcom,imem.yaml b/Documentation/devicetree/bindings/sram/qcom,imem.yaml
new file mode 100644
index 000000000000..e9199190198d
--- /dev/null
+++ b/Documentation/devicetree/bindings/sram/qcom,imem.yaml
@@ -0,0 +1,75 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sram/qcom,imem.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm IMEM memory region
+
+maintainers:
+  - Bjorn Andersson <bjorn.andersson@linaro.org>
+
+description:
+  Qualcomm IMEM is dedicated memory region for various debug features and DMA
+  transactions.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - qcom,apq8064-imem
+          - qcom,msm8974-imem
+          - qcom,qcs404-imem
+          - qcom,sc7180-imem
+          - qcom,sc7280-imem
+          - qcom,sdm630-imem
+          - qcom,sdm845-imem
+          - qcom,sdx55-imem
+      - const: syscon
+      - const: simple-mfd
+
+  reg:
+    maxItems: 1
+
+  ranges: true
+
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 1
+
+  reboot-mode:
+    $ref: /schemas/power/reset/syscon-reboot-mode.yaml#
+
+patternProperties:
+  "^pil-reloc@[0-9a-f]+$":
+    $ref: /schemas/remoteproc/qcom,pil-info.yaml#
+    description: Peripheral image loader relocation region
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        sram@146bf000 {
+            compatible = "qcom,sdm845-imem", "syscon", "simple-mfd";
+            reg = <0 0x146bf000 0 0x1000>;
+            ranges = <0 0 0x146bf000 0x1000>;
+
+            #address-cells = <1>;
+            #size-cells = <1>;
+
+            pil-reloc@94c {
+                compatible = "qcom,pil-reloc-info";
+                reg = <0x94c 0xc8>;
+            };
+        };
+    };
-- 
cgit v1.2.3-59-g8ed1b