From: Peng Ma <peng.ma@nxp.com>
To: vkoul@kernel.org
Cc: robh+dt@kernel.org, mark.rutland@arm.com, shawnguo@kernel.org,
leoyang.li@nxp.com, dan.j.williams@intel.com, zw@zh-kernel.org,
dmaengine@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linuxppc-dev@lists.ozlabs.org, Peng Ma <peng.ma@nxp.com>,
Wen He <wen.he_1@nxp.com>
Subject: [PATCH 7/7] dt-bindings: fsl-qdma: Add NXP Layerscpae qDMA controller bindings
Date: Fri, 26 Oct 2018 17:52:40 +0800 [thread overview]
Message-ID: <20181026095240.33668-7-peng.ma@nxp.com> (raw)
In-Reply-To: <20181026095240.33668-1-peng.ma@nxp.com>
Document the devicetree bindings for NXP Layerscape qDMA controller
which could be found on NXP QorIQ Layerscape SoCs.
Signed-off-by: Wen He <wen.he_1@nxp.com>
Signed-off-by: Peng Ma <peng.ma@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
change in v10:
- no
Documentation/devicetree/bindings/dma/fsl-qdma.txt | 57 ++++++++++++++++++++
1 files changed, 57 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/dma/fsl-qdma.txt
diff --git a/Documentation/devicetree/bindings/dma/fsl-qdma.txt b/Documentation/devicetree/bindings/dma/fsl-qdma.txt
new file mode 100644
index 0000000..6a0ff90
--- /dev/null
+++ b/Documentation/devicetree/bindings/dma/fsl-qdma.txt
@@ -0,0 +1,57 @@
+NXP Layerscape SoC qDMA Controller
+==================================
+
+This device follows the generic DMA bindings defined in dma/dma.txt.
+
+Required properties:
+
+- compatible: Must be one of
+ "fsl,ls1021a-qdma": for LS1021A Board
+ "fsl,ls1043a-qdma": for ls1043A Board
+ "fsl,ls1046a-qdma": for ls1046A Board
+- reg: Should contain the register's base address and length.
+- interrupts: Should contain a reference to the interrupt used by this
+ device.
+- interrupt-names: Should contain interrupt names:
+ "qdma-queue0": the block0 interrupt
+ "qdma-queue1": the block1 interrupt
+ "qdma-queue2": the block2 interrupt
+ "qdma-queue3": the block3 interrupt
+ "qdma-error": the error interrupt
+- fsl,dma-queues: Should contain number of queues supported.
+- dma-channels: Number of DMA channels supported
+- block-number: the virtual block number
+- block-offset: the offset of different virtual block
+- status-sizes: status queue size of per virtual block
+- queue-sizes: command queue size of per virtual block, the size number
+ based on queues
+
+Optional properties:
+
+- dma-channels: Number of DMA channels supported by the controller.
+- big-endian: If present registers and hardware scatter/gather descriptors
+ of the qDMA are implemented in big endian mode, otherwise in little
+ mode.
+
+Examples:
+
+ qdma: dma-controller@8390000 {
+ compatible = "fsl,ls1021a-qdma";
+ reg = <0x0 0x8388000 0x0 0x1000>, /* Controller regs */
+ <0x0 0x8389000 0x0 0x1000>, /* Status regs */
+ <0x0 0x838a000 0x0 0x2000>; /* Block regs */
+ interrupts = <GIC_SPI 185 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "qdma-error",
+ "qdma-queue0", "qdma-queue1";
+ dma-channels = <8>;
+ block-number = <2>;
+ block-offset = <0x1000>;
+ fsl,dma-queues = <2>;
+ status-sizes = <64>;
+ queue-sizes = <64 64>;
+ big-endian;
+ };
+
+DMA clients must use the format described in dma/dma.txt file.
--
1.7.1
next prev parent reply other threads:[~2018-10-26 9:57 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-26 9:52 [PATCH 1/7] dmaengine: fsldma: Replace DMA_IN/OUT by FSL_DMA_IN/OUT Peng Ma
2018-10-26 9:52 ` [PATCH 2/7] dmaengine: fsldma: Adding macro FSL_DMA_IN/OUT implement for ARM platform Peng Ma
2018-10-26 9:52 ` [PATCH 3/7] dmaengine: fsl-qdma: Add qDMA controller driver for Layerscape SoCs Peng Ma
2018-10-26 20:47 ` Li Yang
2018-10-29 9:51 ` Peng Ma
2018-10-29 14:45 ` Li Yang
2018-10-26 9:52 ` [PATCH 4/7] arm: dts: ls1021a: add qdma device tree nodes Peng Ma
2018-10-26 9:52 ` [PATCH 5/7] arm64: dts: ls1043a: " Peng Ma
2018-10-26 9:52 ` [PATCH 6/7] arm64: dts: ls1046a: " Peng Ma
2018-10-26 9:52 ` Peng Ma [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-10-11 9:46 [PATCH 1/7] dmaengine: fsldma: Replace DMA_IN/OUT by FSL_DMA_IN/OUT Peng Ma
2018-10-11 9:46 ` [PATCH 7/7] dt-bindings: fsl-qdma: Add NXP Layerscpae qDMA controller bindings Peng Ma
2018-10-11 22:08 ` Rob Herring
2018-10-12 2:25 ` Peng Ma
2018-10-12 11:31 ` Rob Herring
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