[PATCH v4 1/2] regulator: dt-bindings: pca9450: add PMIC_RST_B warm reset property

[Fabio Aiuto <fabio.aiuto@engicam.com>]

The default configuration of the PMIC behavior makes the PMIC
power cycle most regulators on PMIC_RST_B assertion. This power
cycling causes the memory contents of OCRAM to be lost.
Some systems needs some memory that survives reset and
reboot, therefore add a property to mark the regulator as
performing warm resets on PMIC_RST_B assertion.

Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Mirko Ardinghi <mirko.ardinghi@engicam.com>
Signed-off-by: Fabio Aiuto <fabio.aiuto@engicam.com>
---
 .../bindings/regulator/nxp,pca9450-regulator.yaml           | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/regulator/nxp,pca9450-regulator.yaml b/Documentation/devicetree/bindings/regulator/nxp,pca9450-regulator.yaml
index 849bfa50bdba..865b259dac37 100644
--- a/Documentation/devicetree/bindings/regulator/nxp,pca9450-regulator.yaml
+++ b/Documentation/devicetree/bindings/regulator/nxp,pca9450-regulator.yaml
@@ -93,6 +93,12 @@ properties:
       When WDOG_B signal is asserted a warm reset will be done instead of cold
       reset.
 
+  nxp,pmic-rst-b-warm-reset:
+    type: boolean
+    description:
+      When PMIC_RST_B signal is asserted a warm reset will be done instead of cold
+      reset.
+
 required:
   - compatible
   - reg
-- 
2.34.1