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Message-Id: <1551735420-16202-2-git-send-email-eajames@linux.ibm.com>
Date: Mon, 4 Mar 2019 15:36:55 -0600
From: Eddie James <eajames@...ux.ibm.com>
To: linux-kernel@...r.kernel.org
Cc: linux-aspeed@...ts.ozlabs.org, devicetree@...r.kernel.org,
robh+dt@...nel.org, mark.rutland@....com, joel@....id.au,
andrew@...id.au, arnd@...db.de, gregkh@...uxfoundation.org,
jk@...abs.org, openbmc@...ts.ozlabs.org,
Eddie James <eajames@...ux.ibm.com>
Subject: [PATCH 1/6] dt-bindings: misc: Add Aspeed XDMA engine binding documentation
Document the bindings.
Signed-off-by: Eddie James <eajames@...ux.ibm.com>
---
.../devicetree/bindings/misc/aspeed,xdma.txt | 23 ++++++++++++++++++++++
1 file changed, 23 insertions(+)
create mode 100644 Documentation/devicetree/bindings/misc/aspeed,xdma.txt
diff --git a/Documentation/devicetree/bindings/misc/aspeed,xdma.txt b/Documentation/devicetree/bindings/misc/aspeed,xdma.txt
new file mode 100644
index 0000000..85e82ea
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/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
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