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Date: Fri, 22 Apr 2016 11:43:49 +0530 From: Kedareswara rao Appana <appana.durga.rao@...inx.com> To: <robh+dt@...nel.org>, <pawel.moll@....com>, <mark.rutland@....com>, <ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>, <michal.simek@...inx.com>, <soren.brinkmann@...inx.com>, <vinod.koul@...el.com>, <dan.j.williams@...el.com>, <appanad@...inx.com>, <moritz.fischer@...us.com>, <laurent.pinchart@...asonboard.com>, <luis@...ethencourt.com>, <anirudh@...inx.com>, <punnaia@...inx.com>, <shubhraj@...inx.com> CC: <devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>, <dmaengine@...r.kernel.org> Subject: [PATCH v4 2/3] Documentation: DT: vdma: Add clock support for dmas This patch updates the binding doc with clock description for AXI DMA's. Acked-by: Sören Brinkmann <soren.brinkmann@...inx.com> Signed-off-by: Kedareswara rao Appana <appanad@...inx.com> --- Changes for v4: ---> None. Changes for v3: ---> Added clock support for all the AXI DMA's. Changes for v2: --> Listed down all the clocks supported by the h/w as suggested by the Datta. --> Used IP clock names instead of shortcut clock name .../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 fcc2b65..a1f2683 100644 --- a/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt +++ b/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt @@ -21,6 +21,18 @@ Required properties: - dma-channel child node: Should have at least one channel and can have up to two channels per device. This node specifies the properties of each DMA channel (see child node properties below). +- clocks: Input clock specifier. Refer to common clock bindings. +- clock-names: List of input clocks + For VDMA: + Required elements: "s_axi_lite_aclk" + Optional elements: "m_axi_mm2s_aclk" "m_axi_s2mm_aclk", + "m_axis_mm2s_aclk", "s_axis_s2mm_aclk" + For CDMA: + Required elements: "s_axi_lite_aclk", "m_axi_aclk" + FOR AXIDMA: + Required elements: "s_axi_lite_aclk" + Optional elements: "m_axi_mm2s_aclk", "m_axi_s2mm_aclk", + "m_axi_sg_aclk" Required properties for VDMA: - xlnx,num-fstores: Should be the number of framebuffers as configured in h/w. @@ -60,6 +72,9 @@ axi_vdma_0: axivdma@...30000 { xlnx,num-fstores = <0x8>; xlnx,flush-fsync = <0x1>; xlnx,addrwidth = <0x20>; + clocks = <&clk 0>, <&clk 1>, <&clk 2>, <&clk 3>, <&clk 4>; + clock-names = "s_axi_lite_aclk", "m_axi_mm2s_aclk", "m_axi_s2mm_aclk", + "m_axis_mm2s_aclk", "s_axis_s2mm_aclk"; dma-channel@...30000 { compatible = "xlnx,axi-vdma-mm2s-channel"; interrupts = < 0 54 4 >; -- 2.1.2
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