The driver has been in the tree for a while, but its binding document
is missing.  Hence, here it is.

Signed-off-by: Masahiro Yamada <yamada.masah...@socionext.com>
---

 .../pinctrl/socionext,uniphier-pinctrl.txt         | 27 ++++++++++++++++++++++
 MAINTAINERS                                        |  1 +
 2 files changed, 28 insertions(+)
 create mode 100644 
Documentation/devicetree/bindings/pinctrl/socionext,uniphier-pinctrl.txt

diff --git 
a/Documentation/devicetree/bindings/pinctrl/socionext,uniphier-pinctrl.txt 
b/Documentation/devicetree/bindings/pinctrl/socionext,uniphier-pinctrl.txt
new file mode 100644
index 0000000..8173b12
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/socionext,uniphier-pinctrl.txt
@@ -0,0 +1,27 @@
+UniPhier SoCs pin controller
+
+Required properties:
+- compatible: should be one of the following:
+    "socionext,uniphier-ld4-pinctrl"  - for LD4 SoC
+    "socionext,uniphier-pro4-pinctrl" - for Pro4 SoC
+    "socionext,uniphier-sld8-pinctrl" - for sLD8 SoC
+    "socionext,uniphier-pro5-pinctrl" - for Pro5 SoC
+    "socionext,uniphier-pxs2-pinctrl" - for PXs2 SoC
+    "socionext,uniphier-ld6b-pinctrl" - for LD6b SoC
+    "socionext,uniphier-ld11-pinctrl" - for LD11 SoC
+    "socionext,uniphier-ld20-pinctrl" - for LD20 SoC
+    "socionext,uniphier-pxs3-pinctrl" - for PXs3 SoC
+
+Note:
+The UniPhier pinctrl should be a subnode of a "syscon" compatible node.
+
+Example:
+       soc-glue@5f800000 {
+               compatible = "socionext,uniphier-pro4-soc-glue",
+                            "simple-mfd", "syscon";
+               reg = <0x5f800000 0x2000>;
+
+               pinctrl: pinctrl {
+                       compatible = "socionext,uniphier-pro4-pinctrl";
+               };
+       };
diff --git a/MAINTAINERS b/MAINTAINERS
index aa71ab52f..38b0ddc 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2042,6 +2042,7 @@ L:        linux-arm-ker...@lists.infradead.org (moderated 
for non-subscribers)
 T:     git 
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-uniphier.git
 S:     Maintained
 F:     Documentation/devicetree/bindings/gpio/gpio-uniphier.txt
+F:     Documentation/devicetree/bindings/pinctrl/socionext,uniphier-pinctrl.txt
 F:     arch/arm/boot/dts/uniphier*
 F:     arch/arm/include/asm/hardware/cache-uniphier.h
 F:     arch/arm/mach-uniphier/
-- 
2.7.4

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