linux-kernel - [PATCH v3 1/8] dt-bindings: soc: Add Aspeed XDMA engine binding documentation

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Message-Id: <1559153408-31190-2-git-send-email-eajames@linux.ibm.com>
Date:   Wed, 29 May 2019 13:10:01 -0500
From:   Eddie James <eajames@...ux.ibm.com>
To:     linux-aspeed@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org, arnd@...db.de, robh+dt@...nel.org,
        mark.rutland@....com, devicetree@...r.kernel.org, joel@....id.au,
        andrew@...id.au, Eddie James <eajames@...ux.ibm.com>
Subject: [PATCH v3 1/8] dt-bindings: soc: Add Aspeed XDMA engine binding documentation

Document the bindings.

Signed-off-by: Eddie James <eajames@...ux.ibm.com>
---
 .../devicetree/bindings/soc/aspeed/xdma.txt        | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/aspeed/xdma.txt

diff --git a/Documentation/devicetree/bindings/soc/aspeed/xdma.txt b/Documentation/devicetree/bindings/soc/aspeed/xdma.txt
new file mode 100644
index 0000000..85e82ea
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/aspeed/xdma.txt
@@ -0,0 +1,23 @@
+* Device tree bindings for the Aspeed XDMA Engine
+
+The XDMA Engine embedded in the AST2500 SOC can perform automatic DMA
+operations over PCI between the AST2500 (acting as a BMC) and a host processor.
+
+Required properties:
+
+ - compatible		"aspeed,ast2500-xdma"
+ - reg			contains the offset and length of the memory region
+			assigned to the XDMA registers
+ - resets		reset specifier for the syscon reset associated with
+			the XDMA engine
+ - interrupts		the interrupt associated with the XDMA engine on this
+			platform
+
+Example:
+
+    xdma@...e7000 {
+        compatible = "aspeed,ast2500-xdma";
+        reg = <0x1e6e7000 0x100>;
+        resets = <&syscon ASPEED_RESET_XDMA>;
+        interrupts = <6>;
+    };
-- 
1.8.3.1