From: Alexander Popov <a13xp0p0v88@gmail.com>
To: Gerhard Sittig <gsi@denx.de>,
Dan Williams <dan.j.williams@intel.com>,
Vinod Koul <vinod.koul@intel.com>,
Lars-Peter Clausen <lars@metafoo.de>,
Arnd Bergmann <arnd@arndb.de>, Anatolij Gustschin <agust@denx.de>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Alexander Popov <a13xp0p0v88@gmail.com>,
linuxppc-dev@lists.ozlabs.org, dmaengine@vger.kernel.org
Cc: devicetree@vger.kernel.org
Subject: [PATCH RFC v13 4/5] dma: mpc512x: add device tree binding document
Date: Thu, 15 May 2014 18:15:34 +0400 [thread overview]
Message-ID: <1400163335-29853-5-git-send-email-a13xp0p0v88@gmail.com> (raw)
In-Reply-To: <1400163335-29853-1-git-send-email-a13xp0p0v88@gmail.com>
Introduce a device tree binding document for the MPC512x DMA controller
Signed-off-by: Alexander Popov <a13xp0p0v88@gmail.com>
---
.../devicetree/bindings/dma/mpc512x-dma.txt | 40 ++++++++++++++++++++++
1 file changed, 40 insertions(+)
create mode 100644 Documentation/devicetree/bindings/dma/mpc512x-dma.txt
diff --git a/Documentation/devicetree/bindings/dma/mpc512x-dma.txt b/Documentation/devicetree/bindings/dma/mpc512x-dma.txt
new file mode 100644
index 0000000..b1cbc3f
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/mpc512x-dma.txt
@@ -0,0 +1,40 @@
+* Freescale MPC512x and MPC8308 DMA Controller
+
+The DMA controller in Freescale MPC512x and MPC8308 SoCs can move
+blocks of memory contents between memory and peripherals or
+from memory to memory.
+
+Refer to "Generic DMA Controller and DMA request bindings" in
+the dma/dma.txt file for a more detailed description of binding.
+
+Required properties:
+- compatible: Should be "fsl,mpc5121-dma" or "fsl,mpc8308-dma"
+- reg: Address and size of the DMA controller's register set
+- Interrupt for the DMA controller. Syntax of interrupt client node
+ is described in interrupt-controller/interrupts.txt
+
+Optional properties:
+- #dma-cells: The length of the DMA specifier, must be <1>.
+ Each channel of this DMA controller has a peripheral request line,
+ this assignment is fixed in hardware. The cell in dmas property
+ of a client device represents the channel number
+
+Example:
+
+ dma0: dma@14000 {
+ compatible = "fsl,mpc5121-dma";
+ reg = <0x14000 0x1800>;
+ interrupts = <65 0x8>;
+ #dma-cells = <1>;
+ };
+
+DMA clients must use the format described in dma/dma.txt
+
+Example:
+
+ sdhc@1500 {
+ compatible = "fsl,mpc5121-sdhc";
+ /* ... */
+ dmas = <&dma0 30>;
+ dma-names = "rx-tx";
+ };
--
1.8.4.2
next prev parent reply other threads:[~2014-05-15 14:16 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-15 14:15 [PATCH RFC v13 0/5] MPC512x DMA slave s/g support, OF DMA lookup Alexander Popov
2014-05-15 14:15 ` [PATCH RFC v13 1/5] dmaengine: fix comment typo Alexander Popov
2014-05-22 5:07 ` Vinod Koul
2014-05-15 14:15 ` [PATCH RFC v13 2/5] dma: mpc512x: add support for peripheral transfers Alexander Popov
2014-05-22 5:08 ` Vinod Koul
2014-05-15 14:15 ` [PATCH RFC v13 3/5] dma: of: add common xlate function for matching by channel id Alexander Popov
2014-05-15 14:15 ` Alexander Popov [this message]
2014-05-15 14:15 ` [PATCH RFC v13 5/5] dma: mpc512x: register for device tree channel lookup Alexander Popov
2014-05-22 5:10 ` [PATCH RFC v13 0/5] MPC512x DMA slave s/g support, OF DMA lookup Vinod Koul
2014-05-24 7:33 ` Alexander Popov
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