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Diffstat (limited to 'Documentation/devicetree/bindings/spi/spi_pl022.txt')
-rw-r--r-- | Documentation/devicetree/bindings/spi/spi_pl022.txt | 70 |
1 files changed, 0 insertions, 70 deletions
diff --git a/Documentation/devicetree/bindings/spi/spi_pl022.txt b/Documentation/devicetree/bindings/spi/spi_pl022.txt deleted file mode 100644 index 7638b4968ddb..000000000000 --- a/Documentation/devicetree/bindings/spi/spi_pl022.txt +++ /dev/null @@ -1,70 +0,0 @@ -ARM PL022 SPI controller - -Required properties: -- compatible : "arm,pl022", "arm,primecell" -- reg : Offset and length of the register set for the device -- interrupts : Should contain SPI controller interrupt -- num-cs : total number of chipselects - -Optional properties: -- cs-gpios : should specify GPIOs used for chipselects. - The gpios will be referred to as reg = <index> in the SPI child nodes. - If unspecified, a single SPI device without a chip select can be used. -- pl022,autosuspend-delay : delay in ms following transfer completion before - the runtime power management system suspends the - device. A setting of 0 indicates no delay and the - device will be suspended immediately -- pl022,rt : indicates the controller should run the message pump with realtime - priority to minimise the transfer latency on the bus (boolean) -- dmas : Two or more DMA channel specifiers following the convention outlined - in bindings/dma/dma.txt -- dma-names: Names for the dma channels, if present. There must be at - least one channel named "tx" for transmit and named "rx" for - receive. - - -SPI slave nodes must be children of the SPI master node and can -contain the following properties. - -- pl022,interface : interface type: - 0: SPI - 1: Texas Instruments Synchronous Serial Frame Format - 2: Microwire (Half Duplex) -- pl022,com-mode : specifies the transfer mode: - 0: interrupt mode - 1: polling mode (default mode if property not present) - 2: DMA mode -- pl022,rx-level-trig : Rx FIFO watermark level -- pl022,tx-level-trig : Tx FIFO watermark level -- pl022,ctrl-len : Microwire interface: Control length -- pl022,wait-state : Microwire interface: Wait state -- pl022,duplex : Microwire interface: Full/Half duplex - - -Example: - - spi@e0100000 { - compatible = "arm,pl022", "arm,primecell"; - reg = <0xe0100000 0x1000>; - #address-cells = <1>; - #size-cells = <0>; - interrupts = <0 31 0x4>; - dmas = <&dma-controller 23 1>, - <&dma-controller 24 0>; - dma-names = "rx", "tx"; - - m25p80@1 { - compatible = "st,m25p80"; - reg = <1>; - spi-max-frequency = <12000000>; - spi-cpol; - spi-cpha; - pl022,interface = <0>; - pl022,com-mode = <0x2>; - pl022,rx-level-trig = <0>; - pl022,tx-level-trig = <0>; - pl022,ctrl-len = <0x11>; - pl022,wait-state = <0>; - pl022,duplex = <0>; - }; - }; |