Hi Shubhrajyoti, > -----Original Message----- > From: Shubhrajyoti Datta [mailto:shubhrajyoti.datta@xxxxxxxxx] > Sent: Wednesday, April 20, 2016 1:30 PM > To: Appana Durga Kedareswara Rao <appanad@xxxxxxxxxx> > Cc: Rob Herring <robh+dt@xxxxxxxxxx>; Pawel Moll <pawel.moll@xxxxxxx>; > Mark Rutland <mark.rutland@xxxxxxx>; Ian Campbell > <ijc+devicetree@xxxxxxxxxxxxxx>; Kumar Gala <galak@xxxxxxxxxxxxxx>; Michal > Simek <michals@xxxxxxxxxx>; Soren Brinkmann <sorenb@xxxxxxxxxx>; > vinod.koul@xxxxxxxxx; dan.j.williams@xxxxxxxxx; Appana Durga Kedareswara > Rao <appanad@xxxxxxxxxx>; Moritz Fischer <moritz.fischer@xxxxxxxxx>; > Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>; > luis@xxxxxxxxxxxxxxxxx; Anirudha Sarangi <anirudh@xxxxxxxxxx>; Punnaiah > Choudary Kalluri <punnaia@xxxxxxxxxx>; dmaengine@xxxxxxxxxxxxxxx; > devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; linux-arm- > kernel@xxxxxxxxxxxxxxxxxxx > Subject: Re: [PATCH 1/2] Documentation: DT: vdma: Add clock support for vdma > > On Wed, Apr 20, 2016 at 12:49 PM, Kedareswara rao Appana > <appana.durga.rao@xxxxxxxxxx> wrote: > > This patch updates the binding doc with clock description for vdma. > > > > Signed-off-by: Kedareswara rao Appana <appanad@xxxxxxxxxx> > > --- > > Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt | 6 > > ++++++ > > 1 file changed, 6 insertions(+) > > > > diff --git > > a/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt > > b/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt > > index fcc2b65..e1c9019 100644 > > --- a/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt > > +++ b/Documentation/devicetree/bindings/dma/xilinx/xilinx_vdma.txt > > @@ -21,6 +21,10 @@ 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 "axi_clk", "tx_clk", "txs_clk" (list of input > > + cloks may vary based on the ip configuration. see clock bindings > > + for more info). > > > > Required properties for VDMA: > > - xlnx,num-fstores: Should be the number of framebuffers as configured in > h/w. > > @@ -60,6 +64,8 @@ axi_vdma_0: axivdma@40030000 { > > xlnx,num-fstores = <0x8>; > > xlnx,flush-fsync = <0x1>; > > xlnx,addrwidth = <0x20>; > > + clocks = <&clk 0>, <&clk 1>, <&clk 2>; > > + clock-names = "axi_clk", "tx_clk", "txs_clk"; > > the module has > s_axi_lite_aclk Clock I AXI VDMA AXI4-Lite interface clock m_axi_mm2s_aclk > Clock I AXI VDMA MM2S clock m_axi_s2mm_aclk Clock I AXI VDMA S2MM clock > m_axis_mm2s_aclk Clock I AXI VDMA MM2S AXIS clock s_axis_s2mm_aclk > Clock I AXI VDMA S2MM AXIS clock > > I think a partial support is not wrong. It is not partial support the driver is supporting all the clocks available in the IP (please refer the patch 2 in the series). In the example I just putted clock names for TX path I mean when the IP is configured only with one channel. Will update the clock-names example with the all the supported clocks in the next version. > however we should keep the names same as the TRM. Why?? Why can't we use simple convenient names that refers to equivalent clocks of h/w I mean I used axi_clk instead of s_axi_lite_aclk, Used tx_clk instead of m_axi_mm2s_aclk, Used txs_clk instead of m_axis_mm2s_aclk. If it mandatory to use names as the TRM please let me know will update the same v2... Regards, Kedar. > > > > dma-channel@40030000 { > > compatible = "xlnx,axi-vdma-mm2s-channel"; > > interrupts = < 0 54 4 >; > > -- > > 2.1.2 > > > > > > _______________________________________________ > > linux-arm-kernel mailing list > > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel ��.n��������+%������w��{.n����z�{��ܨ}���Ơz�j:+v�����w����ޙ��&�)ߡ�a����z�ޗ���ݢj��w�f
