linux-kernel - [PATCHv1 2/6] dt-bindings, firmware: add Intel Stratix10 remote system update binding

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Date:   Tue,  9 Apr 2019 13:45:58 -0500
From:   richard.gong@...ux.intel.com
To:     gregkh@...uxfoundation.org, robh+dt@...nel.org,
        mark.rutland@....com, dinguyen@...nel.org, atull@...nel.org
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        richard.gong@...ux.intel.com, Richard Gong <richard.gong@...el.com>
Subject: [PATCHv1 2/6] dt-bindings, firmware: add Intel Stratix10 remote system update binding

From: Richard Gong <richard.gong@...el.com>

Add a device tree binding for the Intel Stratix10 remote system
update (RSU) driver

Signed-off-by: Richard Gong <richard.gong@...el.com>
Reviewed-by: Alan Tull <atull@...nel.org>
---
 .../bindings/firmware/intel,stratix10-rsu.txt      | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/firmware/intel,stratix10-rsu.txt

diff --git a/Documentation/devicetree/bindings/firmware/intel,stratix10-rsu.txt b/Documentation/devicetree/bindings/firmware/intel,stratix10-rsu.txt
new file mode 100644
index 0000000..b6250eb
--- /dev/null
+++ b/Documentation/devicetree/bindings/firmware/intel,stratix10-rsu.txt
@@ -0,0 +1,31 @@
+Intel Remote System Update Driver for Stratix10 SoC
+============================================
+The Intel Remote System Update (RSU) driver exposes interfaces
+accessed through the Intel Service Layer to user space via sysfs
+interface. The RSU interfaces report and control some of the optional
+RSU features on Intel Stratix 10 SoC.
+
+The RSU feature provides a way for customers to update the boot
+configuration of a Intel Stratix 10 SoC device with significantly reduced
+risk of corrupting the bitstream storage and bricking the system.
+
+Required properties:
+-------------------
+The rsu node has the following mandatory properties, must be located under
+the firmware/svc node.
+
+- compatible: "intel,stratix10-rsu"
+
+Example:
+-------
+	firmware {
+		svc {
+			compatible = "intel,stratix10-svc";
+			method = "smc";
+			memory-region = <&service_reserved>;
+
+			rsu: rsu {
+				compatible = "intel,stratix10-rsu";
+			};
+		};
+	};
-- 
2.7.4