| Message ID | 1420458525-22576-5-git-send-email-k.kozlowski@samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
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.kozlowski@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>; > + }; > }
On wto, 2015-01-20 at 13:41 +0000, Lee Jones wrote: > 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.kozlowski@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? Strictly speaking - no difference, just a GPIO specifier. However the 'enable-gpio' property exists only for gpio-regulator. The regulator core does not support generic enable-gpio property and each driver implements it on its own. Anyway Mark Brown already applied this patch to his regulator tree. Best regards, Krzysztof > > > 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>; > > + }; > > } > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Tue, 20 Jan 2015, Krzysztof Kozlowski wrote: > On wto, 2015-01-20 at 13:41 +0000, Lee Jones wrote: > > 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.kozlowski@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? > > Strictly speaking - no difference, just a GPIO specifier. > > However the 'enable-gpio' property exists only for gpio-regulator. The > regulator core does not support generic enable-gpio property and each > driver implements it on its own. > > Anyway Mark Brown already applied this patch to his regulator tree. Well if he has no issue with it, then I guess I don't. > > > 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>; > > > + }; > > > } > > >
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) 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>; + }; }
Document usage of maxim,ena-gpios properties which turn on external/GPIO control over regulator. Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> --- Documentation/devicetree/bindings/mfd/max77686.txt | 14 ++++++++++++++ 1 file changed, 14 insertions(+)