linux-kernel - [[PATCH] 4/9] Documentation-DTbindings-DMA-controller-of-AST2500

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Date:   Wed, 17 Oct 2018 09:41:01 +0530
From:   "sudheer.v" <open.sudheer@...il.com>
To:     Vinod Koul <vkoul@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        Russell King <linux@...linux.org.uk>,
        Dan Williams <dan.j.williams@...el.com>,
        Jiri Slaby <jslaby@...e.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <marc.zyngier@....com>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Michael Moese <mmoese@...e.de>,
        Hendrik Brueckner <brueckner@...ux.vnet.ibm.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Philippe Ombredanne <pombredanne@...b.com>,
        dmaengine@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-aspeed@...ts.ozlabs.org
Cc:     "sudheer.v" <open.sudheer@...il.com>,
        Sudheer V <sudheer.veliseti@...eedtech.com>,
        ShivahShankar Shakarnarayan rao 
        <shivahshankar.shankarnarayanrao@...eedtech.com>
Subject: [[PATCH] 4/9] Documentation-DTbindings-DMA-controller-of-AST2500

Signed-off-by: sudheer.v <open.sudheer@...il.com>
---
 .../devicetree/bindings/dma/ast-uart-sdma.txt      | 23 ++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/dma/ast-uart-sdma.txt

diff --git a/Documentation/devicetree/bindings/dma/ast-uart-sdma.txt b/Documentation/devicetree/bindings/dma/ast-uart-sdma.txt
new file mode 100644
index 0000000..e770df2
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/ast-uart-sdma.txt
@@ -0,0 +1,23 @@
+* Aspeed Direct Memory Access (DMA) Controller for AST25XX
+
+
+* DMA controller
+
+Required properties:
+- compatible : Should be "aspeed,ast-uart-sdma"
+- reg : Should contain SDMA registers location and length
+- interrupts : Should contain SDMA interrupt
+- dma-channels: number of DMA channels in DMA controller
+
+Optional properties:
+
+Example
+                        ast_uart_sdma: uart_sdma@...9e000 {
+                                compatible = "aspeed,ast-uart-sdma";
+                                reg = <0x1e79e000 0x400>;
+                                interrupts = <50>;
+                                #dma-cells = <1>;
+                                dma-channels = <8>;
+                                status = "disabled";
+                        };
+
-- 
1.9.1