On Mon, 05 Jan 2015, Krzysztof Kozlowski wrote:
> Document usage of maxim,ena-gpios properties which turn on external/GPIO
> control over regulator.
>
> Signed-off-by: Krzysztof Kozlowski <k.kozlow...@samsung.com>
> ---
> Documentation/devicetree/bindings/mfd/max77686.txt | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/mfd/max77686.txt
> b/Documentation/devicetree/bindings/mfd/max77686.txt
> index 75fdfaf41831..e39f0bc1f55e 100644
> --- a/Documentation/devicetree/bindings/mfd/max77686.txt
> +++ b/Documentation/devicetree/bindings/mfd/max77686.txt
> @@ -39,6 +39,12 @@ to get matched with their hardware counterparts as follow:
> -BUCKn : 1-4.
> Use standard regulator bindings for it ('regulator-off-in-suspend').
>
> + LDO20, LDO21, LDO22, BUCK8 and BUCK9 can be configured to GPIO enable
> + control. To turn this feature on this property must be added to the
> regulator
> + sub-node:
> + - maxim,ena-gpios : one GPIO specifier enable control (the gpio
> + flags are actually ignored and always
> + ACTIVE_HIGH is used)
How does this differ to the 'enable-gpio' property which has already
been defined?
> Example:
>
> @@ -65,4 +71,12 @@ Example:
> regulator-always-on;
> regulator-boot-on;
> };
> +
> + buck9_reg {
> + regulator-compatible = "BUCK9";
> + regulator-name = "CAM_ISP_CORE_1.2V";
> + regulator-min-microvolt = <1000000>;
> + regulator-max-microvolt = <1200000>;
> + maxim,ena-gpios = <&gpm0 3 GPIO_ACTIVE_HIGH>;
> + };
> }
--
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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