From 07a186893af5a274877d11ce9e5d81c142890cf6 Mon Sep 17 00:00:00 2001 From: Andrew Bresticker Date: Fri, 14 Nov 2014 10:48:31 -0800 Subject: spi: Add binding document for IMG SPFI controller The Synchronous Peripheral Flash Interface (SPFI) controller found on IMG SoCs supports single, dual, and (optionally) quad mode SPI transfers. Signed-off-by: Andrew Bresticker Signed-off-by: Mark Brown --- .../devicetree/bindings/spi/spi-img-spfi.txt | 37 ++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/spi-img-spfi.txt diff --git a/Documentation/devicetree/bindings/spi/spi-img-spfi.txt b/Documentation/devicetree/bindings/spi/spi-img-spfi.txt new file mode 100644 index 000000000000..c7dd50fb8eb2 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-img-spfi.txt @@ -0,0 +1,37 @@ +IMG Synchronous Peripheral Flash Interface (SPFI) controller + +Required properties: +- compatible: Must be "img,spfi". +- reg: Must contain the base address and length of the SPFI registers. +- interrupts: Must contain the SPFI interrupt. +- clocks: Must contain an entry for each entry in clock-names. + See ../clock/clock-bindings.txt for details. +- clock-names: Must include the following entries: + - spfi: SPI operating clock + - sys: SPI system interface clock +- dmas: Must contain an entry for each entry in dma-names. + See ../dma/dma.txt for details. +- dma-names: Must include the following entries: + - rx + - tx +- #address-cells: Must be 1. +- #size-cells: Must be 0. + +Optional properties: +- img,supports-quad-mode: Should be set if the interface supports quad mode + SPI transfers. + +Example: + +spi@18100f00 { + compatible = "img,spfi"; + reg = <0x18100f00 0x100>; + interrupts = ; + clocks = <&spi_clk>, <&system_clk>; + clock-names = "spfi", "sys"; + dmas = <&mdc 9 0xffffffff 0>, <&mdc 10 0xffffffff 0>; + dma-names = "rx", "tx"; + + #address-cells = <1>; + #size-cells = <0>; +}; -- cgit v1.2.3