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-rw-r--r--Documentation/devicetree/bindings/spi/mxs-spi.txt22
-rw-r--r--Documentation/devicetree/bindings/spi/spi-bus.txt3
-rw-r--r--Documentation/devicetree/bindings/spi/spi-gpio.txt29
-rw-r--r--Documentation/devicetree/bindings/spi/spi-sc18is602.txt23
-rw-r--r--Documentation/devicetree/bindings/spi/spi_pl022.txt22
5 files changed, 99 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/spi/mxs-spi.txt b/Documentation/devicetree/bindings/spi/mxs-spi.txt
new file mode 100644
index 000000000000..e2e13957c2a4
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/mxs-spi.txt
@@ -0,0 +1,22 @@
+* Freescale MX233/MX28 SSP/SPI
+
+Required properties:
+- compatible: Should be "fsl,<soc>-spi", where soc is "imx23" or "imx28"
+- reg: Offset and length of the register set for the device
+- interrupts: Should contain SSP interrupts (error irq first, dma irq second)
+- fsl,ssp-dma-channel: APBX DMA channel for the SSP
+
+Optional properties:
+- clock-frequency : Input clock frequency to the SPI block in Hz.
+ Default is 160000000 Hz.
+
+Example:
+
+ssp0: ssp@80010000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,imx28-spi";
+ reg = <0x80010000 0x2000>;
+ interrupts = <96 82>;
+ fsl,ssp-dma-channel = <0>;
+};
diff --git a/Documentation/devicetree/bindings/spi/spi-bus.txt b/Documentation/devicetree/bindings/spi/spi-bus.txt
index e782add2e457..d2c33d0f533e 100644
--- a/Documentation/devicetree/bindings/spi/spi-bus.txt
+++ b/Documentation/devicetree/bindings/spi/spi-bus.txt
@@ -21,6 +21,9 @@ assumption that board specific platform code will be used to manage
chip selects. Individual drivers can define additional properties to
support describing the chip select layout.
+Optional property:
+- num-cs : total number of chipselects
+
SPI slave nodes must be children of the SPI master node and can
contain the following properties.
- reg - (required) chip select address of device.
diff --git a/Documentation/devicetree/bindings/spi/spi-gpio.txt b/Documentation/devicetree/bindings/spi/spi-gpio.txt
new file mode 100644
index 000000000000..8a824be15754
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-gpio.txt
@@ -0,0 +1,29 @@
+SPI-GPIO devicetree bindings
+
+Required properties:
+
+ - compatible: should be set to "spi-gpio"
+ - #address-cells: should be set to <0x1>
+ - ranges
+ - gpio-sck: GPIO spec for the SCK line to use
+ - gpio-miso: GPIO spec for the MISO line to use
+ - gpio-mosi: GPIO spec for the MOSI line to use
+ - cs-gpios: GPIOs to use for chipselect lines
+ - num-chipselects: number of chipselect lines
+
+Example:
+
+ spi {
+ compatible = "spi-gpio";
+ #address-cells = <0x1>;
+ ranges;
+
+ gpio-sck = <&gpio 95 0>;
+ gpio-miso = <&gpio 98 0>;
+ gpio-mosi = <&gpio 97 0>;
+ cs-gpios = <&gpio 125 0>;
+ num-chipselects = <1>;
+
+ /* clients */
+ };
+
diff --git a/Documentation/devicetree/bindings/spi/spi-sc18is602.txt b/Documentation/devicetree/bindings/spi/spi-sc18is602.txt
new file mode 100644
index 000000000000..02f9033270a2
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-sc18is602.txt
@@ -0,0 +1,23 @@
+NXP SC18IS602/SCIS603
+
+Required properties:
+ - compatible : Should be one of
+ "nxp,sc18is602"
+ "nxp,sc18is602b"
+ "nxp,sc18is603"
+ - reg: I2C bus address
+
+Optional properties:
+ - clock-frequency : external oscillator clock frequency. If not
+ specified, the SC18IS602 default frequency (7372000) will be used.
+
+The clock-frequency property is relevant and needed only if the chip has an
+external oscillator (SC18IS603).
+
+Example:
+
+ sc18is603@28 {
+ compatible = "nxp,sc18is603";
+ reg = <0x28>;
+ clock-frequency = <14744000>;
+ }
diff --git a/Documentation/devicetree/bindings/spi/spi_pl022.txt b/Documentation/devicetree/bindings/spi/spi_pl022.txt
index 306ec3ff3c0e..f158fd31cfda 100644
--- a/Documentation/devicetree/bindings/spi/spi_pl022.txt
+++ b/Documentation/devicetree/bindings/spi/spi_pl022.txt
@@ -6,7 +6,29 @@ Required properties:
- interrupts : Should contain SPI controller interrupt
Optional properties:
+- num-cs : total number of chipselects
- cs-gpios : should specify GPIOs used for chipselects.
The gpios will be referred to as reg = <index> in the SPI child nodes.
If unspecified, a single SPI device without a chip select can be used.
+- pl022,autosuspend-delay : delay in ms following transfer completion before
+ the runtime power management system suspends the
+ device. A setting of 0 indicates no delay and the
+ device will be suspended immediately
+- pl022,rt : indicates the controller should run the message pump with realtime
+ priority to minimise the transfer latency on the bus (boolean)
+
+
+SPI slave nodes must be children of the SPI master node and can
+contain the following properties.
+
+- pl022,interface : interface type:
+ 0: SPI
+ 1: Texas Instruments Synchronous Serial Frame Format
+ 2: Microwire (Half Duplex)
+- pl022,com-mode : polling, interrupt or dma
+- pl022,rx-level-trig : Rx FIFO watermark level
+- pl022,tx-level-trig : Tx FIFO watermark level
+- pl022,ctrl-len : Microwire interface: Control length
+- pl022,wait-state : Microwire interface: Wait state
+- pl022,duplex : Microwire interface: Full/Half duplex