These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / spi / spi_atmel.txt

diff --git a/kernel/Documentation/devicetree/bindings/spi/spi_atmel.txt b/kernel/Documentation/devicetree/bindings/spi/spi_atmel.txt
index 4f8184d..fb588b3 100644 (file)
--- a/kernel/Documentation/devicetree/bindings/spi/spi_atmel.txt
+++ b/kernel/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 {