spi: Master driver for NXP SC18IS602/603

This driver adds support for NXP SC18IS602/603 I2C to SPI bus bridge.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 23 insertions, 0 deletions

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>;
+        }