- add new property "atmel,fifo-size"
- change "cs-gpios" to optional for SPI controller version >= 2.
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@xxxxxxxxx>
---
Documentation/devicetree/bindings/spi/spi_atmel.txt | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/spi/spi_atmel.txt b/Documentation/devicetree/bindings/spi/spi_atmel.txt
index 4f8184d..fb588b3 100644
--- a/Documentation/devicetree/bindings/spi/spi_atmel.txt
+++ b/Documentation/devicetree/bindings/spi/spi_atmel.txt
@@ -4,11 +4,16 @@ Required properties:
- compatible : should be "atmel,at91rm9200-spi".
- reg: Address and length of the register set for the device
- interrupts: Should contain spi interrupt
-- cs-gpios: chipselects
+- cs-gpios: chipselects (optional for SPI controller version >= 2 with the
+ Chip Select Active After Transfer feature).
- clock-names: tuple listing input clock names.
Required elements: "spi_clk"
- clocks: phandles to input clocks.
+Optional properties:
+- atmel,fifo-size: maximum number of data the RX and TX FIFOs can store for FIFO
+ capable SPI controllers.
+
Example:
spi1: spi@fffcc000 {
@@ -20,6 +25,7 @@ spi1: spi@fffcc000 {
clocks = <&spi1_clk>;
clock-names = "spi_clk";
cs-gpios = <&pioB 3 0>;
+ atmel,fifo-size = <32>;
status = "okay";
mmc-slot@0 {
--
1.8.2.2
--
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