This binding is used to keep the backward compatibility with the current dtb's [1]. The binding informs the driver that the unused switch regulators can be disabled. If it is not specified, the driver doesn't disable the switch regulators. [1] https://patchwork.kernel.org/patch/10490381/ Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx> --- Changes in V2: - add more information about the binding - rename binding and add vendor prefix .../devicetree/bindings/regulator/pfuze100.txt | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/Documentation/devicetree/bindings/regulator/pfuze100.txt b/Documentation/devicetree/bindings/regulator/pfuze100.txt index 672c939045ff..2c46b8d368db 100644 --- a/Documentation/devicetree/bindings/regulator/pfuze100.txt +++ b/Documentation/devicetree/bindings/regulator/pfuze100.txt @@ -4,6 +4,17 @@ Required properties: - compatible: "fsl,pfuze100", "fsl,pfuze200", "fsl,pfuze3000", "fsl,pfuze3001" - reg: I2C slave address +Optional properties: +- fsl,pfuze-support-disable: Boolean, if present disable all unused switch + regulators to save power consumption. Attention, till 4.18 these regulators + were always on without specifying "regulator-always-on". So be sure to mark + import regulators as "regulator-always-on" (e.g. DDR ref, DDR supply). If + not present, the switched regualtors are always on and can't be disabled. + This binding is a workaround to keep backward compatibility with old dtb's + which rely on the fact that the switched regulators are always on and don't + mark them explicit as "regulator-always-on". On new dtbs this property should + always be present. + Required child node: - regulators: This is the list of child nodes that specify the regulator initialization data for defined regulators. Please refer to below doc -- 2.18.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
