| Message ID | 4333f81dfa1d9be082b09ab9ddf2694cb56285e2.1543245984.git-series.plaes@plaes.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | regulator: axp20x: Stop AXP209 from crashing when enabling LDO3 | expand |
On Mon, 26 Nov 2018, Priit Laes wrote: > From: Olliver Schinagl <oliver@schinagl.nl> > > The AXP209 supports ramping up voltages on several regulators such as > DCDC2 and LDO3, therefore we can use the standard 'regulator-ramp-delay' > property for those 2 regulators. > > Note that the voltage ramp only works when the regulator is already > enabled. E.g. when going from say 0.7 V to 3.6 V. > > When turning on the regulator, no voltage ramp is performed in hardware. > > What this means, is that if the bootloader brings up the voltage at 0.7 V, > the ramp delay property is properly applied. If however, the bootloader > leaves the power off, no ramp delay is applied when the power is > enabled by the regulator framework. > > Signed-off-by: Olliver Schinagl <oliver@schinagl.nl> > Signed-off-by: Priit Laes <plaes@plaes.org> > --- > Documentation/devicetree/bindings/mfd/axp20x.txt | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/Documentation/devicetree/bindings/mfd/axp20x.txt b/Documentation/devicetree/bindings/mfd/axp20x.txt > index 188f037..5542212 100644 > --- a/Documentation/devicetree/bindings/mfd/axp20x.txt > +++ b/Documentation/devicetree/bindings/mfd/axp20x.txt > @@ -32,6 +32,11 @@ Required properties: > - interrupt-controller: The PMIC has its own internal IRQs > - #interrupt-cells: Should be set to 1 > > +Supported common regulator properties, see regulator.txt for more information: regulator.txt should be a relative path. ../regulator/regulator.txt in this case. Once changed, please apply my: For my own reference: Acked-for-MFD-by: Lee Jones <lee.jones@linaro.org>
diff --git a/Documentation/devicetree/bindings/mfd/axp20x.txt b/Documentation/devicetree/bindings/mfd/axp20x.txt index 188f037..5542212 100644 --- a/Documentation/devicetree/bindings/mfd/axp20x.txt +++ b/Documentation/devicetree/bindings/mfd/axp20x.txt @@ -32,6 +32,11 @@ Required properties: - interrupt-controller: The PMIC has its own internal IRQs - #interrupt-cells: Should be set to 1 +Supported common regulator properties, see regulator.txt for more information: +- regulator-ramp-delay: sets the ramp up delay in uV/us + AXP20x/DCDC2: 1600, 800 + AXP20x/LDO3: 1600, 800 + Optional properties: - x-powers,dcdc-freq: defines the work frequency of DC-DC in KHz AXP152/20X: range: 750-1875, Default: 1.5 MHz