From 31e54086dd7bb86ad40f1d76a9063f2a95866b87 Mon Sep 17 00:00:00 2001 From: Pawel Moll Date: Mon, 24 Sep 2012 18:56:54 +0100 Subject: regulator: Versatile Express regulator driver Implementation of the regulator framework driver for the Versatile Express voltage control. Devices without voltage constraints (ie. "regulator-[min|max]-microvolt" properties in the DT node) are treated as fixed (or rather read-only) regulators. Signed-off-by: Pawel Moll Signed-off-by: Mark Brown --- .../devicetree/bindings/regulator/vexpress.txt | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/vexpress.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/regulator/vexpress.txt b/Documentation/devicetree/bindings/regulator/vexpress.txt new file mode 100644 index 000000000000..d775f72487aa --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/vexpress.txt @@ -0,0 +1,32 @@ +Versatile Express voltage regulators +------------------------------------ + +Requires node properties: +- "compatible" value: "arm,vexpress-volt" +- "arm,vexpress-sysreg,func" when controlled via vexpress-sysreg + (see Documentation/devicetree/bindings/arm/vexpress-sysreg.txt + for more details) + +Required regulator properties: +- "regulator-name" +- "regulator-always-on" + +Optional regulator properties: +- "regulator-min-microvolt" +- "regulator-max-microvolt" + +See Documentation/devicetree/bindings/regulator/regulator.txt +for more details about the regulator properties. + +When no "regulator-[min|max]-microvolt" properties are defined, +the device is treated as fixed (or rather "read-only") regulator. + +Example: + volt@0 { + compatible = "arm,vexpress-volt"; + arm,vexpress-sysreg,func = <2 0>; + regulator-name = "Cores"; + regulator-min-microvolt = <800000>; + regulator-max-microvolt = <1050000>; + regulator-always-on; + }; -- cgit v1.2.1 From 006694d099e86e5a928fb39bdea280ab42c9d59c Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 15 Oct 2012 14:16:59 +0100 Subject: regulator: gpio-regulator: Allow use of GPIO controlled regulators though DT Here we provide the GPIO Regulator driver with Device Tree capability, so that when a platform is booting with DT instead of platform data we can still make full use of it. Signed-off-by: Lee Jones Reviewed-by: Stephen Warren Signed-off-by: Mark Brown --- .../bindings/regulator/gpio-regulator.txt | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/gpio-regulator.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/regulator/gpio-regulator.txt b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt new file mode 100644 index 000000000000..3703be2ab821 --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt @@ -0,0 +1,36 @@ +GPIO controlled regulators + +Required properties: +- compatible : Must be "regulator-gpio". + +Optional properties: +- gpio-enable : GPIO to use to enable/disable the regulator. +- gpios : GPIO group used to control voltage. +- states : Selection of available voltages and GPIO configs. +- startup-delay-us : Startup time in microseconds. +- enable-active-high : Polarity of GPIO is active high (default is low). + +Any property defined as part of the core regulator binding defined in +regulator.txt can also be used. + +Example: + + mmciv: gpio-regulator { + compatible = "regulator-gpio"; + + regulator-name = "mmci-gpio-supply"; + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <2600000>; + regulator-boot-on; + + gpio-enable = <&gpio0 23 0x4>; + gpios = <&gpio0 24 0x4 + &gpio0 25 0x4>; + states = <1800000 0x3 + 2200000 0x2 + 2600000 0x1 + 2900000 0x0>; + + startup-delay-us = <100000>; + enable-active-high; + }; -- cgit v1.2.1 From 45b6f8e8fc014fe404d155a657a04b25b861001d Mon Sep 17 00:00:00 2001 From: Qing Xu Date: Wed, 7 Nov 2012 18:09:53 +0800 Subject: regulator: max8925: support dt for regulator Signed-off-by: Qing Xu Signed-off-by: Mark Brown --- .../bindings/regulator/max8925-regulator.txt | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/max8925-regulator.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/regulator/max8925-regulator.txt b/Documentation/devicetree/bindings/regulator/max8925-regulator.txt new file mode 100644 index 000000000000..073b41d90f2c --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/max8925-regulator.txt @@ -0,0 +1,29 @@ +Max8925 Voltage regulators + +max8925 regulator device register is still handled by mfd_add_devices, not by +of_xxx, so, it is not necessary to add compatible name. Also, those reg +offset and id info is stored in mfd_cell(see max8925-core.c), as a result +there is not private properties in dts. + +node's name should match with the definition in max8925_regulator_matches +(see max8925-regulator.c) + + +Optional properties: +- Any optional property defined in bindings/regulator/regulator.txt + + +Example: + + + regulators { + SDV1 { + regulator-min-microvolt = <637500>; + regulator-max-microvolt = <1425000>; + regulator-boot-on; + regulator-always-on; + }; + + ... + ... + } -- cgit v1.2.1 From 560615ef8b95bb9aa4ea77ccaf3b2114dc93206f Mon Sep 17 00:00:00 2001 From: Qing Xu Date: Thu, 8 Nov 2012 10:31:32 +0800 Subject: regulator: max8925: update dt regulator binding doc remove linux specific references, enumerates all supported regulators Signed-off-by: Qing Xu Signed-off-by: Mark Brown --- .../bindings/regulator/max8925-regulator.txt | 51 +++++++++++++--------- 1 file changed, 31 insertions(+), 20 deletions(-) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/regulator/max8925-regulator.txt b/Documentation/devicetree/bindings/regulator/max8925-regulator.txt index 073b41d90f2c..0057695aae8f 100644 --- a/Documentation/devicetree/bindings/regulator/max8925-regulator.txt +++ b/Documentation/devicetree/bindings/regulator/max8925-regulator.txt @@ -1,29 +1,40 @@ Max8925 Voltage regulators -max8925 regulator device register is still handled by mfd_add_devices, not by -of_xxx, so, it is not necessary to add compatible name. Also, those reg -offset and id info is stored in mfd_cell(see max8925-core.c), as a result -there is not private properties in dts. - -node's name should match with the definition in max8925_regulator_matches -(see max8925-regulator.c) - +Required nodes: +-nodes: + - SDV1 for SDV SDV1 + - SDV2 for SDV SDV2 + - SDV3 for SDV SDV3 + - LDO1 for LDO LDO1 + - LDO2 for LDO LDO2 + - LDO3 for LDO LDO3 + - LDO4 for LDO LDO4 + - LDO5 for LDO LDO5 + - LDO6 for LDO LDO6 + - LDO7 for LDO LDO7 + - LDO8 for LDO LDO8 + - LDO9 for LDO LDO9 + - LDO10 for LDO LDO10 + - LDO11 for LDO LDO11 + - LDO12 for LDO LDO12 + - LDO13 for LDO LDO13 + - LDO14 for LDO LDO14 + - LDO15 for LDO LDO15 + - LDO16 for LDO LDO16 + - LDO17 for LDO LDO17 + - LDO18 for LDO LDO18 + - LDO19 for LDO LDO19 + - LDO20 for LDO LDO20 Optional properties: - Any optional property defined in bindings/regulator/regulator.txt - Example: + SDV1 { + regulator-min-microvolt = <637500>; + regulator-max-microvolt = <1425000>; + regulator-boot-on; + regulator-always-on; + }; - regulators { - SDV1 { - regulator-min-microvolt = <637500>; - regulator-max-microvolt = <1425000>; - regulator-boot-on; - regulator-always-on; - }; - - ... - ... - } -- cgit v1.2.1 From dea05fe66edb4540a53ed6623794c4978315256a Mon Sep 17 00:00:00 2001 From: Frank Li Date: Mon, 12 Nov 2012 17:58:28 +0800 Subject: regulator: gpio-regulator: doc: Fix wrong key gpio-enable Wrong description in binding document. Doc use "gpio-enable", but code use "enable-gpio" In drivers/regulator/gpio-regulator.c config->enable_gpio = of_get_named_gpio(np, "enable-gpio", 0); Signed-off-by: Frank Li Signed-off-by: Mark Brown --- Documentation/devicetree/bindings/regulator/gpio-regulator.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/regulator/gpio-regulator.txt b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt index 3703be2ab821..f71f8083c2ae 100644 --- a/Documentation/devicetree/bindings/regulator/gpio-regulator.txt +++ b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt @@ -4,7 +4,7 @@ Required properties: - compatible : Must be "regulator-gpio". Optional properties: -- gpio-enable : GPIO to use to enable/disable the regulator. +- enable-gpio : GPIO to use to enable/disable the regulator. - gpios : GPIO group used to control voltage. - states : Selection of available voltages and GPIO configs. - startup-delay-us : Startup time in microseconds. @@ -23,7 +23,7 @@ Example: regulator-max-microvolt = <2600000>; regulator-boot-on; - gpio-enable = <&gpio0 23 0x4>; + enable-gpio = <&gpio0 23 0x4>; gpios = <&gpio0 24 0x4 &gpio0 25 0x4>; states = <1800000 0x3 -- cgit v1.2.1 From 216f2b9c95ac6e4f00b08df807bc4454434a9afb Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Wed, 14 Nov 2012 11:51:36 +0000 Subject: regulator: gpio-regulator: Catch 'no states property' misuse A selection of voltage or current values (AKA states) should always be specified when using a GPIO regulator. If there are no switchable states then the fixed regulators should be used instead. Signed-off-by: Lee Jones Signed-off-by: Mark Brown --- Documentation/devicetree/bindings/regulator/gpio-regulator.txt | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/regulator/gpio-regulator.txt b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt index f71f8083c2ae..63c659800c03 100644 --- a/Documentation/devicetree/bindings/regulator/gpio-regulator.txt +++ b/Documentation/devicetree/bindings/regulator/gpio-regulator.txt @@ -2,11 +2,12 @@ GPIO controlled regulators Required properties: - compatible : Must be "regulator-gpio". +- states : Selection of available voltages and GPIO configs. + if there are no states, then use a fixed regulator Optional properties: - enable-gpio : GPIO to use to enable/disable the regulator. - gpios : GPIO group used to control voltage. -- states : Selection of available voltages and GPIO configs. - startup-delay-us : Startup time in microseconds. - enable-active-high : Polarity of GPIO is active high (default is low). -- cgit v1.2.1