diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2013-08-08 16:09:50 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2013-08-09 17:32:57 +0100 |
| commit | 86f8973c1053cb03e1b1b45989a4e144e05b1735 (patch) | |
| tree | 3ed8ec0d5513b5ebc73ace9882db616161f56caf /Documentation | |
| parent | 52ade736215fb4421a6dc2b6900703a6fadba9e9 (diff) | |
spi: new controller driver for efm32 SoCs
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/spi/efm32-spi.txt | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/spi/efm32-spi.txt b/Documentation/devicetree/bindings/spi/efm32-spi.txt new file mode 100644 index 00000000000..a590ca51be7 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/efm32-spi.txt @@ -0,0 +1,34 @@ +* Energy Micro EFM32 SPI + +Required properties: +- #address-cells: see spi-bus.txt +- #size-cells: see spi-bus.txt +- compatible: should be "efm32,spi" +- reg: Offset and length of the register set for the controller +- interrupts: pair specifying rx and tx irq +- clocks: phandle to the spi clock +- cs-gpios: see spi-bus.txt +- location: Value to write to the ROUTE register's LOCATION bitfield to configure the pinmux for the device, see datasheet for values. + +Example: + +spi1: spi@0x4000c400 { /* USART1 */ + #address-cells = <1>; + #size-cells = <0>; + compatible = "efm32,spi"; + reg = <0x4000c400 0x400>; + interrupts = <15 16>; + clocks = <&cmu 20>; + cs-gpios = <&gpio 51 1>; // D3 + location = <1>; + status = "ok"; + + ks8851@0 { + compatible = "ks8851"; + spi-max-frequency = <6000000>; + reg = <0>; + interrupt-parent = <&boardfpga>; + interrupts = <4>; + status = "ok"; + }; +}; |