From mboxrd@z Thu Jan 1 00:00:00 1970 From: Harini Katakam Subject: [PATCH v3 2/2] devicetree: Add devicetree bindings documentation for Cadence SPI Date: Thu, 10 Apr 2014 17:43:50 +0530 Message-ID: <1397132030-2440-2-git-send-email-harinik@xilinx.com> References: <1397132030-2440-1-git-send-email-harinik@xilinx.com> Cc: michals@xilinx.com, Harini Katakam To: broonie@kernel.org, grant.likely@linaro.org, robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org, linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-doc@vger.kernel.org Return-path: In-Reply-To: <1397132030-2440-1-git-send-email-harinik@xilinx.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-spi.vger.kernel.org Add spi-cadence bindings documentation. Signed-off-by: Harini Katakam --- v3 changes: - Remove /bits/ 16 from num-cs property in example. - Add is-decoded-cs optional property and add to description of num-cs. v2 changes: - Separate patch for bindings. - Add xilinx compatible string; Make compatible string first in the node. - Use property name num-cs. Make this property optional. --- .../devicetree/bindings/spi/spi-cadence.txt | 31 ++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/spi-cadence.txt diff --git a/Documentation/devicetree/bindings/spi/spi-cadence.txt b/Documentation/devicetree/bindings/spi/spi-cadence.txt new file mode 100644 index 0000000..94f0914 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-cadence.txt @@ -0,0 +1,31 @@ +Cadence SPI controller Device Tree Bindings +------------------------------------------- + +Required properties: +- compatible : Should be "cdns,spi-r1p6" or "xlnx,zynq-spi-r1p6". +- reg : Physical base address and size of SPI registers map. +- interrupts : Property with a value describing the interrupt + number. +- interrupt-parent : Must be core interrupt controller +- clock-names : List of input clock names - "ref_clk", "pclk" + (See clock bindings for details). +- clocks : Clock phandles (see clock bindings for details). + +Optional properties: +- num-cs : Number of chip selects used. + If a decoder is used, this will be the number of + chip selects after the decoder. +- is-decoded-cs : Flag to indicate whether decoder is used or not. + +Example: + + spi@e0007000 { + compatible = "xlnx,zynq-spi-r1p6"; + clock-names = "ref_clk", "pclk"; + clocks = <&clkc 26>, <&clkc 35>; + interrupt-parent = <&intc>; + interrupts = <0 49 4>; + num-cs = <4>; + is-decoded-cs = <0>; + reg = <0xe0007000 0x1000>; + } ; -- 1.7.9.5