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authorAndrew Duggan <aduggan@synaptics.com>2016-03-10 15:59:52 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2016-03-10 16:04:25 -0800
commit48147b9768b83265bf2e1211bcadeca035011380 (patch)
tree5af450151993e3e454ef1f5d2c2111a0f94d4110 /Documentation/devicetree/bindings/spi
parent8d99758dee31ff4a72bfc35d3a7a51fe66b7bb91 (diff)
Input: synaptics-rmi4 - add device tree support to the SPI transport driver
Add devicetree binding for SPI devices. Signed-off-by: Andrew Duggan <aduggan@synaptics.com> Acked-by: Rob Herring <robh@kernel.org> Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Tested-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation/devicetree/bindings/spi')
-rw-r--r--Documentation/devicetree/bindings/spi/spi-bus.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/spi/spi-bus.txt b/Documentation/devicetree/bindings/spi/spi-bus.txt
index bbaa857dd68f..42d595425dfb 100644
--- a/Documentation/devicetree/bindings/spi/spi-bus.txt
+++ b/Documentation/devicetree/bindings/spi/spi-bus.txt
@@ -61,6 +61,8 @@ contain the following properties.
used for MOSI. Defaults to 1 if not present.
- spi-rx-bus-width - (optional) The bus width(number of data wires) that
used for MISO. Defaults to 1 if not present.
+- spi-rx-delay-us - (optional) Microsecond delay after a read transfer.
+- spi-tx-delay-us - (optional) Microsecond delay after a write transfer.
Some SPI controllers and devices support Dual and Quad SPI transfer mode.
It allows data in the SPI system to be transferred in 2 wires(DUAL) or 4 wires(QUAD).