From mboxrd@z Thu Jan 1 00:00:00 1970 From: appana.durga.rao@xilinx.com (Kedareswara rao Appana) Date: Tue, 15 Mar 2016 22:53:12 +0530 Subject: [PATCH 7/7] dmaengine: xilinx_vdma: Add Support for Xilinx AXI Central Direct Memory Access Engine In-Reply-To: <1458062592-27981-1-git-send-email-appanad@xilinx.com> References: <1458062592-27981-1-git-send-email-appanad@xilinx.com> Message-ID: <1458062592-27981-8-git-send-email-appanad@xilinx.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This patch updates the device-tree binding doc for adding support for AXI CDMA. Signed-off-by: Kedareswara rao Appana --- .../devicetree/bindings/dma/xilinx/xilinx_vdma.txt | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt b/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt index 3d134a5..f288175 100644 --- a/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt +++ b/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt @@ -8,8 +8,12 @@ target devices. It can be configured to have one channel or two channels. If configured as two channels, one is to transmit to the device and another is to receive from the device. +Xilinx AXI CDMA engine, it does transfers between memory-mapped source +address and a memory-mapped destination address. + Required properties: - compatible: Should be "xlnx,axi-vdma-1.00.a" or "xlnx,axi-dma-1.00.a" + or "xlnx,axi-cdma-1.00.a" - #dma-cells: Should be <1>, see "dmas" property below - reg: Should contain VDMA registers location and length. - xlnx,num-fstores: Should be the number of framebuffers as configured in h/w. @@ -76,6 +80,17 @@ axi_dma_0: axidma at 40400000 { } ; } ; +axi_cdma_0: axicdma at 7e200000 { + compatible = "xlnx,axi-cdma-1.00.a"; + #dma-cells = <1>; + reg = < 0x7e200000 0x10000 >; + dma-channel at 7e200000 { + compatible = "xlnx,axi-vdma-mm2s-channel"; + interrupts = < 0 55 4 >; + xlnx,datawidth = <0x40>; + } ; +} ; + * DMA client Required properties: -- 2.1.2