From e7fc278ceb5725070e4e3ecfc2f259ab2101c30e Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Fri, 22 Apr 2016 18:09:40 +0530 Subject: [PATCH] regulator: max77620: Add details of device specific ramp rate setting It is observed that the ramp rate measured on platform is not same as advertised ramp rate due to platform design variation. On this case, measured ramp rate is provided with property regulator-ramp-rate. For such cases, add DT property for device specific configurations. Signed-off-by: Laxman Dewangan Signed-off-by: Mark Brown --- .../bindings/regulator/regulator-max77620.txt | 22 +++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/Documentation/devicetree/bindings/regulator/regulator-max77620.txt b/Documentation/devicetree/bindings/regulator/regulator-max77620.txt index b3c8ca672024..1c4bfe786736 100644 --- a/Documentation/devicetree/bindings/regulator/regulator-max77620.txt +++ b/Documentation/devicetree/bindings/regulator/regulator-max77620.txt @@ -94,6 +94,28 @@ Following are additional properties: This is applicable if suspend state FPS source is selected as FPS0, FPS1 or FPS2. +- maxim,ramp-rate-setting: integer, ramp rate(uV/us) setting to be + configured to the device. + The platform may have different ramp + rate than advertised ramp rate if it has + design variation from Maxim's + recommended. On this case, platform + specific ramp rate is used for ramp time + calculation and this property is used + for device register configurations. + The measured ramp rate of platform is + provided by the regulator-ramp-delay + as described in . + Maxim Max77620 supports following ramp + delay: + SD: 13.75mV/us, 27.5mV/us, 55mV/us + LDOs: 5mV/us, 100mV/us + +Note: If the measured ramp delay is same as advertised ramp delay then it is not +required to provide the ramp delay with property "maxim,ramp-rate-setting". The +ramp rate can be provided by the regulator-ramp-delay which will be used for +ramp time calculation for voltage change as well as for device configuration. Example: --------