spi: sh-msiof: Improve bindings

[cascardo/linux.git] / Documentation / devicetree / bindings / spi / sh-msiof.txt

diff --git a/Documentation/devicetree/bindings/spi/sh-msiof.txt b/Documentation/devicetree/bindings/spi/sh-msiof.txt
index e622210..eae3c8c 100644 (file)
--- a/Documentation/devicetree/bindings/spi/sh-msiof.txt
+++ b/Documentation/devicetree/bindings/spi/sh-msiof.txt
@@ -1,12 +1,22 @@
 Renesas MSIOF spi controller
 
 Required properties:
-- compatible :         "renesas,sh-msiof" for SuperH or
-               "renesas,sh-mobile-msiof" for SH Mobile series
-- reg : Offset and length of the register set for the device
-- interrupts : interrupt line used by MSIOF
+- compatible           : "renesas,sh-msiof" for SuperH, or
+                        "renesas,sh-mobile-msiof" for SH Mobile series.
+- reg                  : Offset and length of the register set for the device
+- interrupt-parent     : The phandle for the interrupt controller that
+                        services interrupts for this device
+- interrupts           : Interrupt specifier
+- #address-cells       : Must be <1>
+- #size-cells          : Must be <0>
 
 Optional properties:
-- num-cs               : total number of chip-selects
-- renesas,tx-fifo-size : Overrides the default tx fifo size given in words
-- renesas,rx-fifo-size : Overrides the default rx fifo size given in words
+- clocks               : Must contain a reference to the functional clock.
+- num-cs               : Total number of chip-selects (default is 1)
+- renesas,tx-fifo-size : Overrides the default tx fifo size given in words
+                        (default is 64)
+- renesas,rx-fifo-size : Overrides the default rx fifo size given in words
+                        (default is 64)
+
+Pinctrl properties might be needed, too.  See
+Documentation/devicetree/bindings/pinctrl/renesas,*.