From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eddie James Subject: [PATCH v3 1/8] dt-bindings: soc: Add Aspeed XDMA engine binding documentation Date: Wed, 29 May 2019 13:10:01 -0500 Message-ID: <1559153408-31190-2-git-send-email-eajames@linux.ibm.com> References: <1559153408-31190-1-git-send-email-eajames@linux.ibm.com> Return-path: In-Reply-To: <1559153408-31190-1-git-send-email-eajames@linux.ibm.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-aspeed@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org, arnd@arndb.de, robh+dt@kernel.org, mark.rutland@arm.com, devicetree@vger.kernel.org, joel@jms.id.au, andrew@aj.id.au, Eddie James List-Id: devicetree@vger.kernel.org Document the bindings. Signed-off-by: Eddie James --- .../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@1e6e7000 { + compatible = "aspeed,ast2500-xdma"; + reg = <0x1e6e7000 0x100>; + resets = <&syscon ASPEED_RESET_XDMA>; + interrupts = <6>; + }; -- 1.8.3.1