From: Martin Sperl <[email protected]> This defines the spi1 and spi2 devices in the device-tree.
Signed-off-by: Martin Sperl <[email protected]> --- .../bindings/spi/brcm,bcm2835-aux-spi.txt | 38 ++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt Changelog: v4->v5: fixed wording for reg removed reference to syscon removed documentation on typical GPIO config v5->v6: move to clk-bcm2835-aux clock driver diff --git a/Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt b/Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt new file mode 100644 index 0000000..9887b07 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/brcm,bcm2835-aux-spi.txt @@ -0,0 +1,38 @@ +Broadcom BCM2835 auxiliar SPI1/2 controller + +The BCM2835 contains two forms of SPI master controller, one known simply as +SPI0, and the other known as the "Universal SPI Master"; part of the +auxiliary block. This binding applies to the SPI1/2 controller. + +Required properties: +- compatible: Should be "brcm,bcm2835-aux-spi". +- reg: Should contain register location and length for the spi block +- interrupts: Should contain shared interrupt of the aux block +- clocks: The clock feeding the SPI controller - needs to + point to the auxiliar clock driver of the bcm2835, + as this clock will enable the output gate for the specific + clock. +- cs-gpios: the cs-gpios (native cs is NOT supported) + see also spi-bus.txt + +Example: + +spi1@7e215080 { + compatible = "brcm,bcm2835-aux-spi"; + reg = <0x7e215080 0x40>; + interrupts = <1 29>; + clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI1>; + #address-cells = <1>; + #size-cells = <0>; + cs-gpios = <&gpio 18>, <&gpio 17>, <&gpio 16>; +}; + +spi2@7e2150c0 { + compatible = "brcm,bcm2835-aux-spi"; + reg = <0x7e2150c0 0x40>; + interrupts = <1 29>; + clocks = <&aux_clocks BCM2835_AUX_CLOCK_SPI2>; + #address-cells = <1>; + #size-cells = <0>; + cs-gpios = <&gpio 43>, <&gpio 44>, <&gpio 45>; +}; -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
