[PATCH 4/5] dt-bindings: power: supply: rk817-charger: Add rockchip,gate-function-disable

[Chris Morgan <macroalpha82@gmail.com>]

From: Chris Morgan <macromorgan@hotmail.com>

Add a boolean attribute for the rk817-charger to control whether or not
the system power is shutdown in battery off mode. The BSP kernel sets
this value unless a device-tree attribute is present, and this attribute
is to replicate that behavior.

Fixes: a592aa3a2a8c ("dt-bindings: mfd: Add Rockchip rk817 battery charger support")
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Suggested-by: Zetarancio <zetarancio@users.noreply.github.com>
---
 Documentation/devicetree/bindings/mfd/rockchip,rk817.yaml | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/rockchip,rk817.yaml b/Documentation/devicetree/bindings/mfd/rockchip,rk817.yaml
index 2cb6d176a84c..4cf987fe763b 100644
--- a/Documentation/devicetree/bindings/mfd/rockchip,rk817.yaml
+++ b/Documentation/devicetree/bindings/mfd/rockchip,rk817.yaml
@@ -148,6 +148,12 @@ properties:
           Value in microamps of the sleep filter current for the charger.
           Value is used by the driver to derive the sleep sample current.
 
+      rockchip,gate-function-disable:
+        type: boolean
+        description:
+          Boolean value to prevent PMIC from turning off system voltage when
+          battery voltage is shut down.
+
     required:
       - monitored-battery
       - rockchip,resistor-sense-micro-ohms
@@ -381,6 +387,7 @@ examples:
 
             rk817_charger: charger {
                 monitored-battery = <&battery>;
+                rockchip,gate-function-disable;
                 rockchip,resistor-sense-micro-ohms = <10000>;
                 rockchip,sleep-enter-current-microamp = <300000>;
                 rockchip,sleep-filter-current-microamp = <100000>;
-- 
2.53.0