[PATCH/RFC 1/5] dt-bindings: mfd: bd9571mwv: Document rohm,ddr-backup-power

[Geert Uytterhoeven <geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org>]

Document the new optional "rohm,ddr-backup-power" property.

Signed-off-by: Geert Uytterhoeven <geert+renesas-gXvu3+zWzMSzQB+pC5nmwQ@public.gmane.org>
---
 Documentation/devicetree/bindings/mfd/bd9571mwv.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/bd9571mwv.txt b/Documentation/devicetree/bindings/mfd/bd9571mwv.txt
index 9ab216a851d5619b..7ea3f2db41d4e501 100644
--- a/Documentation/devicetree/bindings/mfd/bd9571mwv.txt
+++ b/Documentation/devicetree/bindings/mfd/bd9571mwv.txt
@@ -25,6 +25,12 @@ Required properties:
 			    Each child node is defined using the standard
 			    binding for regulators.
 
+Optional properties:
+  - rohm,ddr-backup-power : Value to use for DDR-Backup Power.  This controls
+			    which DDR rails need to be kept powered when backup
+			    mode is enabled, cfr. the KEEPON_DDR* bits in the
+			    documentation for the "BKUP Mode Cnt" register.
+
 Example:
 
 	pmic: pmic@30 {
@@ -36,6 +42,7 @@ Example:
 		#interrupt-cells = <2>;
 		gpio-controller;
 		#gpio-cells = <2>;
+		rohm,ddr-backup-power = <15>;
 
 		regulators {
 			dvfs: dvfs {
-- 
2.7.4

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