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Subject[PATCH 09/11] dt-bindings: spi/spi-pxa2xx: Add ready GPIO signal
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This this is used to let the SPI master know that our FIFO is filled and
we're ready to service a transfer. Only useful in slave mode.

A signal like this is used by an embedded controller on a OLPC XO 1.75
machine, that happens to be a SPI master.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
---
Documentation/devicetree/bindings/spi/spi-pxa2xx.txt | 2 ++
1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/spi/spi-pxa2xx.txt b/Documentation/devicetree/bindings/spi/spi-pxa2xx.txt
index 89b2832283e3..681a82b40e6f 100644
--- a/Documentation/devicetree/bindings/spi/spi-pxa2xx.txt
+++ b/Documentation/devicetree/bindings/spi/spi-pxa2xx.txt
@@ -12,6 +12,8 @@ Optional properties:
- cs-gpios: list of GPIO chip selects. See the SPI bus bindings,
Documentation/devicetree/bindings/spi/spi-bus.txt
- spi-slave: Empty property indicating the SPI controller is used in slave mode.
+- ready-gpio: GPIO used to signal a SPI master that the FIFO is filled
+ and we're ready to service a transfer. Only useful in slave mode.

Child nodes represent devices on the SPI bus
See ../spi/spi-bus.txt
--
2.19.0
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