Add input voltage configuration options
Signed-off-by: Christian Hohnstaedt <Christian.Hohnstaedt@xxxxxxxx>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
---
.../devicetree/bindings/regulator/tps65218.txt | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/Documentation/devicetree/bindings/regulator/tps65218.txt b/Documentation/devicetree/bindings/regulator/tps65218.txt
index 02f0e9b..982597d 100644
--- a/Documentation/devicetree/bindings/regulator/tps65218.txt
+++ b/Documentation/devicetree/bindings/regulator/tps65218.txt
@@ -16,12 +16,34 @@ Required properties:
regulator-dcdc5, regulator-dcdc6, regulator-ldo1, regulator-ls3.
Each regulator is defined using the standard binding for regulators.
+Optional properties:
+ If any of these properties is absent then the corresponding setting will be
+ untouched.
+- ti,strict-supply-voltage-supervision: Set/Reset STRICT flag in CONFIG1.
+ The supervisor has two modes of operation, controlled by the STRICT bit.
+ With the STRICT bit set to 0, all five rails are monitored for under-voltage
+ only with relaxed thresholds and deglitch times.
+ With the STRCT bit set to 1, all five rails are monitored for under-voltage
+ and over-voltage with tight limits and short deglitch times.
+- ti,under-voltage-limit-microvolt: Configures UVLO in CONFIG1.
+ Valid values are: 2750000, 2950000, 3250000, 3350000
+- ti,under-voltage-hyst-microvolt: Select 200mV or 400mV UVLOHYS in CONFIG2
+ Power rails are only enabled if the input voltage measured at the IN_BIAS pin
+ is greater than the under-voltage lockout threshold plus hysteresis
+ (UVLO + UVLOHYS). Once the input voltage rises above this level,
+ the input voltage may drop to the UVLO level before the PMIC shuts down.
+ UVLO is deglitched by 5 ms on rising and falling edge.
+
Example:
tps65218: tps65218@24 {
reg = <0x24>;
compatible = "ti,tps65218";
interrupts = <GIC_SPI 7 IRQ_TYPE_NONE>; /* NMIn */
interrupt-controller;
+ ti,strict-supply-voltage-supervision = <1>;
+ ti,under-voltage-hyst-microvolt = <400000>;
+ ti,under-voltage-limit-microvolt = <3350000>;
+
#interrupt-cells = <2>;
dcdc1: regulator-dcdc1 {
--
2.7.4
