Signed-off-by: Jonathan Richardson <jonat...@broadcom.com>
---
.../devicetree/bindings/spi/brcm,mspi-spi.txt | 38 ++++++++++++++++++++
1 file changed, 38 insertions(+)
create mode 100644 Documentation/devicetree/bindings/spi/brcm,mspi-spi.txt
diff --git a/Documentation/devicetree/bindings/spi/brcm,mspi-spi.txt
b/Documentation/devicetree/bindings/spi/brcm,mspi-spi.txt
new file mode 100644
index 0000000..16164e3
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/brcm,mspi-spi.txt
@@ -0,0 +1,38 @@
+Broadcom MSPI controller
+
+Required properties:
+- compatible: Must be either "brcm,mspi" or "brcm,bcma-mspi". Use
+ "brcm,bcma-mspi" for controllers on a bcma bus and "brcm,mspi" otherwise.
+
+- reg: Physical base address and length of the controller's registers.
+
+- interrupts: The interrupt id for the controller.
+
+- #address-cells: should be 1.
+
+- #size-cells: should be 0.
+
+Optional properties:
+- clocks: The MSPI reference clock. If not provided then it is assumed a clock
+ is enabled by default and no control of clock-frequency (see below) is
+ possible.
+
+- clock-names: The name of the reference clock.
+
+- clock-frequency: Desired frequency of the clock. This will set the serial
+ clock baud rate (SPBR) based on the reference clock frequency. The frequency
+ of the SPBR is mspi_clk / (2 * SPBR) where SPBR is a value between 1-255
+ determined by the desired 'clock-frequency'. If not provided then the default
+ baud rate of the controller is used.
+
+Example:
+
+mspi@18047000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "brcm,mspi";
+ reg = <0x18047000 0x1000>;
+ clocks = <&axi41_clk>;
+ clock-names = "mspi_clk";
+ clock-frequency = <12500000>;
+};
--
1.7.9.5
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