Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

[mirror_ubuntu-artful-kernel.git] / Documentation / devicetree / bindings / arm / shmobile.txt

diff --git a/Documentation/devicetree/bindings/arm/shmobile.txt b/Documentation/devicetree/bindings/arm/shmobile.txt
index 5d8229d74a5fe526c6911d398894a321478be559..253bf9b86690dc04b44a8ae1bbda9fa8e7979970 100644 (file)
--- a/Documentation/devicetree/bindings/arm/shmobile.txt
+++ b/Documentation/devicetree/bindings/arm/shmobile.txt
@@ -85,3 +85,21 @@ Boards:
     compatible = "renesas,sk-rzg1m", "renesas,r8a7743"
   - Wheat
     compatible = "renesas,wheat", "renesas,r8a7792"
+
+
+Most Renesas ARM SoCs have a Product Register that allows to retrieve SoC
+product and revision information.  If present, a device node for this register
+should be added.
+
+Required properties:
+  - compatible: Must be "renesas,prr".
+  - reg: Base address and length of the register block.
+
+
+Examples
+--------
+
+       prr: chipid@ff000044 {
+               compatible = "renesas,prr";
+               reg = <0 0xff000044 0 4>;
+       };