0001 ARM Freescale DSPI controller
0002
0003 Required properties:
0004 - compatible : must be one of:
0005 "fsl,vf610-dspi",
0006 "fsl,ls1021a-v1.0-dspi",
0007 "fsl,ls1012a-dspi" (optionally followed by "fsl,ls1021a-v1.0-dspi"),
0008 "fsl,ls1028a-dspi",
0009 "fsl,ls1043a-dspi" (optionally followed by "fsl,ls1021a-v1.0-dspi"),
0010 "fsl,ls1046a-dspi" (optionally followed by "fsl,ls1021a-v1.0-dspi"),
0011 "fsl,ls1088a-dspi" (optionally followed by "fsl,ls1021a-v1.0-dspi"),
0012 "fsl,ls2080a-dspi" (optionally followed by "fsl,ls2085a-dspi"),
0013 "fsl,ls2085a-dspi",
0014 "fsl,lx2160a-dspi",
0015 - reg : Offset and length of the register set for the device
0016 - interrupts : Should contain SPI controller interrupt
0017 - clocks: from common clock binding: handle to dspi clock.
0018 - clock-names: from common clock binding: Shall be "dspi".
0019 - pinctrl-0: pin control group to be used for this controller.
0020 - pinctrl-names: must contain a "default" entry.
0021 - spi-num-chipselects : the number of the chipselect signals.
0022
0023 Optional property:
0024 - big-endian: If present the dspi device's registers are implemented
0025 in big endian mode.
0026 - bus-num : the slave chip chipselect signal number.
0027
0028 Optional SPI slave node properties:
0029 - fsl,spi-cs-sck-delay: a delay in nanoseconds between activating chip
0030 select and the start of clock signal, at the start of a transfer.
0031 - fsl,spi-sck-cs-delay: a delay in nanoseconds between stopping the clock
0032 signal and deactivating chip select, at the end of a transfer.
0033
0034 Example:
0035
0036 dspi0@4002c000 {
0037 #address-cells = <1>;
0038 #size-cells = <0>;
0039 compatible = "fsl,vf610-dspi";
0040 reg = <0x4002c000 0x1000>;
0041 interrupts = <0 67 0x04>;
0042 clocks = <&clks VF610_CLK_DSPI0>;
0043 clock-names = "dspi";
0044 spi-num-chipselects = <5>;
0045 bus-num = <0>;
0046 pinctrl-names = "default";
0047 pinctrl-0 = <&pinctrl_dspi0_1>;
0048 big-endian;
0049
0050 sflash: at26df081a@0 {
0051 #address-cells = <1>;
0052 #size-cells = <1>;
0053 compatible = "atmel,at26df081a";
0054 spi-max-frequency = <16000000>;
0055 spi-cpol;
0056 spi-cpha;
0057 reg = <0>;
0058 linux,modalias = "m25p80";
0059 modal = "at26df081a";
0060 fsl,spi-cs-sck-delay = <100>;
0061 fsl,spi-sck-cs-delay = <50>;
0062 };
0063 };
0064
0065
