[PATCH v2 1/3] dt-bindings: mfd: syscon: add binding for TI K3 platforms reset registers

[A. Sverdlin]

From: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxxxx>

Add DT binding for Texas Instruments K3 Multicore SoC platforms reset
registers present on AM64x and newer members of the K3 family and consist
of the RST_CTRL, RST_STAT, RST_SRC and RST_MAGIC_WORD.

The planned usage is to provide reset reason information.

Signed-off-by: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxxxx>
---
Changelog:
v2: amended mfd/syscon.yaml instead of separate reset/ti,am64-rst.yaml

 Documentation/devicetree/bindings/mfd/syscon.yaml     |  1 +
 .../bindings/soc/ti/ti,j721e-system-controller.yaml   | 11 +++++++++++
 2 files changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/syscon.yaml b/Documentation/devicetree/bindings/mfd/syscon.yaml
index e57add2bacd30..564fcb153a688 100644
--- a/Documentation/devicetree/bindings/mfd/syscon.yaml
+++ b/Documentation/devicetree/bindings/mfd/syscon.yaml
@@ -240,6 +240,7 @@ properties:
               - ti,am62-usb-phy-ctrl
               - ti,am625-dss-oldi-io-ctrl
               - ti,am62p-cpsw-mac-efuse
+              - ti,am64-rst
               - ti,am654-dss-oldi-io-ctrl
               - ti,j784s4-acspcie-proxy-ctrl
               - ti,j784s4-pcie-ctrl
diff --git a/Documentation/devicetree/bindings/soc/ti/ti,j721e-system-controller.yaml b/Documentation/devicetree/bindings/soc/ti/ti,j721e-system-controller.yaml
index f3bd0be3b279f..b8063548f50ad 100644
--- a/Documentation/devicetree/bindings/soc/ti/ti,j721e-system-controller.yaml
+++ b/Documentation/devicetree/bindings/soc/ti/ti,j721e-system-controller.yaml
@@ -86,6 +86,12 @@ patternProperties:
     description:
       This is the DSS OLDI CTRL region.
 
+  "^rst@[0-9a-f]+$":
+    type: object
+    $ref: /schemas/mfd/syscon.yaml#
+    description:
+      The node corresponding to SoC reset registers block.
+
 required:
   - compatible
   - reg
@@ -133,5 +139,10 @@ examples:
             compatible = "ti,j784s4-pcie-ctrl", "syscon";
             reg = <0x4070 0x4>;
         };
+
+        rst@18170 {
+            compatible = "ti,am64-rst";
+            reg = <0x18170 0x10>;
+        };
     };
 ...
-- 
2.52.0