From: Krzysztof Kozlowski Date: Mon, 14 Apr 2014 08:09:08 +0000 (+0200) Subject: regulator: s2mps11: Document external GPIO control X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=9b63cfbfd13b609e8d496852b6714ac686e31901;p=openwrt%2Fstaging%2Fblogic.git regulator: s2mps11: Document external GPIO control Add documentation for new property for controlling (enable/disable) some of the S2MPS14 regulators by GPIO. Signed-off-by: Krzysztof Kozlowski Signed-off-by: Mark Brown --- diff --git a/Documentation/devicetree/bindings/mfd/s2mps11.txt b/Documentation/devicetree/bindings/mfd/s2mps11.txt index 802e839b0829..d81ba30c0d8b 100644 --- a/Documentation/devicetree/bindings/mfd/s2mps11.txt +++ b/Documentation/devicetree/bindings/mfd/s2mps11.txt @@ -56,6 +56,20 @@ for a particular group of BUCKs. So provide same regulator-ramp-delay. Grouping of BUCKs sharing ramp rate setting is as follow : BUCK[1, 6], BUCK[3, 4], and BUCK[7, 8, 10] +On S2MPS14 the LDO10, LDO11 and LDO12 can be configured to external control +over GPIO. To turn this feature on this property must be added to the regulator +sub-node: + - samsung,ext-control-gpios: GPIO specifier for one GPIO + controlling this regulator (enable/disable); +Example: + LDO12 { + regulator-name = "V_EMMC_2.8V"; + regulator-min-microvolt = <2800000>; + regulator-max-microvolt = <2800000>; + samsung,ext-control-gpios = <&gpk0 2 0>; + }; + + The regulator constraints inside the regulator nodes use the standard regulator bindings which are documented elsewhere.