From: Rafał Miłecki <rafal@milecki.pl>

Northstar has mux controller just like Northstar Plus and Northstar2.
It's a bit different though (different registers & pins) so it requires
its own binding.

It's needed to allow other block bindings specify required mux setup.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---
 .../devicetree/bindings/pinctrl/brcm,ns-pinmux.txt | 29 ++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pinctrl/brcm,ns-pinmux.txt

diff --git a/Documentation/devicetree/bindings/pinctrl/brcm,ns-pinmux.txt b/Documentation/devicetree/bindings/pinctrl/brcm,ns-pinmux.txt
new file mode 100644
index 000000000000..0e913721ae9e
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/brcm,ns-pinmux.txt

@@ -0,0 +1,29 @@
+Broadcom Northstar pins mux controller
+
+Some of Northstar SoCs's pins can be used for various purposes thanks to the mux
+controller. This binding allows describing mux controller and listing available
+functions. They can be referenced later by other bindings to let system
+configure controller correctly.
+
+Required properties:
+- compatible: brcm,ns-pinmux
+- reg: iomem address range of CRU (Central Resource Unit) pin registers
+- reg-names: "cru_pins_control" - the only needed & supported reg right now