This introduced the device tree bindings for the gpio block found in pm8018, pm8038, pm8058, pm8917 and pm8921 pmics from Qualcomm. Signed-off-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxxxxxx> --- .../bindings/pinctrl/qcom,pm8xxx-gpio.txt | 230 ++++++++++++++++++++ include/dt-bindings/pinctrl/qcom,pm8xxx-gpio.h | 34 +++ 2 files changed, 264 insertions(+) create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,pm8xxx-gpio.txt create mode 100644 include/dt-bindings/pinctrl/qcom,pm8xxx-gpio.h diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,pm8xxx-gpio.txt b/Documentation/devicetree/bindings/pinctrl/qcom,pm8xxx-gpio.txt new file mode 100644 index 0000000..0035dd8 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/qcom,pm8xxx-gpio.txt @@ -0,0 +1,230 @@ +Qualcomm PM8XXX GPIO block + +This binding describes the GPIO block(s) found in the 8xxx series of pmics from +Qualcomm. + +- compatible: + Usage: required + Value type: <string> + Definition: must be one of: + "qcom,pm8018-gpio" + "qcom,pm8038-gpio" + "qcom,pm8058-gpio" + "qcom,pm8917-gpio" + "qcom,pm8921-gpio" + +- reg: + Usage: required + Value type: <u32> + Definition: Register base of the gpio block + +- interrupts: + Usage: required + Value type: <prop-encoded-array> + Definition: Must contain an array of encoded interrupt specifiers for + each available gpio + +- gpio-controller: + Usage: required + Value type: <none> + Definition: Mark the device node as a GPIO controller + +- #gpio-cells: + Usage: required + Value type: <u32> + Definition: Must be 2; + the first cell will be used to define gpio number and the + second denotes the flags for this gpio + +Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for +a general description of GPIO and interrupt bindings. + +Please refer to pinctrl-bindings.txt in this directory for details of the +common pinctrl bindings used by client devices, including the meaning of the +phrase "pin configuration node". + +The pin configuration nodes act as a container for an abitrary number of +subnodes. Each of these subnodes represents some desired configuration for a +pin or a list of pins. This configuration can include the +mux function to select on those pin(s), and various pin configuration +parameters, s listed below. + + +SUBNODES: + +The name of each subnode is not important; all subnodes should be enumerated +and processed purely based on their content. + +Each subnode only affects those parameters that are explicitly listed. In +other words, a subnode that lists a mux function but no pin configuration +parameters implies no information about any pin configuration parameters. +Similarly, a pin subnode that describes a pullup parameter implies no +information about e.g. the mux function. + +The following generic properties as defined in pinctrl-bindings.txt are valid +to specify in a pin configuration subnode: + +- pins: + Usage: required + Value type: <string-array> + Definition: List of gpio pins affected by the properties specified in + this subnode. Valid pins are: + gpio1-gpio6 for pm8018 + gpio1-gpio12 for pm8038 + gpio1-gpio40 for pm8058 + gpio1-gpio38 for pm8917 + gpio1-gpio44 for pm8921 + +- function: + Usage: optional + Value type: <string> + Definition: Specify the alternative function to be configured for the + specified pins. Valid values are: + "normal", + "paired", + "func1", + "func2", + "dtest1", + "dtest2", + "dtest3", + "dtest4" + +- bias-disable: + Usage: optional + Value type: <none> + Definition: The specified pins should be configued as no pull. + +- bias-pull-down: + Usage: optional + Value type: <none> + Definition: The specified pins should be configued as pull down. + +- bias-pull-up: + Usage: optional + Value type: <u32> (optional) + Definition: The specified pins should be configued as pull up. An + optional argument can be used to configure the strength. + Valid values are; as defined in + <dt-bindings/pinctrl/qcom,pm8xxx-gpio.h>: + 1: 30uA (PM8XXX_GPIO_PULL_UP_30) + 2: 1.5uA (PM8XXX_GPIO_PULL_UP_1P5) + 3: 31.5uA (PM8XXX_GPIO_PULL_UP_31P5) + 4: 1.5uA + 30uA boost (PM8XXX_GPIO_PULL_UP_1P5_30) + +- bias-high-impedance: + Usage: optional + Value type: <none> + Definition: The specified pins will put in high-Z mode and disabled. + +- input-enable: + Usage: optional + Value type: <none> + Definition: The specified pins are put in input mode. + +- output-high: + Usage: optional + Value type: <none> + Definition: The specified pins are configured in output mode, driven + high. + +- output-low: + Usage: optional + Value type: <none> + Definition: The specified pins are configured in output mode, driven + low. + +- power-source: + Usage: optional + Value type: <u32> + Definition: Selects the power source for the specified pins. Valid + power sources are, as defined in + <dt-bindings/pinctrl/qcom,pm8xxx-gpio.h>: + 0: bb (PM8XXX_GPIO_VIN_BB) + valid for pm8038, pm8058, pm8917, pm8921 + 1: ldo2 (PM8XXX_GPIO_VIN_L2) + valid for pm8018, pm8038, pm8917,pm8921 + 2: ldo3 (PM8XXX_GPIO_VIN_L3) + valid for pm8038, pm8058, pm8917, pm8921 + 3: ldo4 (PM8XXX_GPIO_VIN_L4) + valid for pm8018, pm8917, pm8921 + 4: ldo5 (PM8XXX_GPIO_VIN_L5) + valid for pm8018, pm8058 + 5: ldo6 (PM8XXX_GPIO_VIN_L6) + valid for pm8018, pm8058 + 6: ldo7 (PM8XXX_GPIO_VIN_L7) + valid for pm8058 + 7: ldo8 (PM8XXX_GPIO_VIN_L8) + valid for pm8018 + 8: ldo11 (PM8XXX_GPIO_VIN_L11) + valid for pm8038 + 9: ldo14 (PM8XXX_GPIO_VIN_L14) + valid for pm8018 + 10: ldo15 (PM8XXX_GPIO_VIN_L15) + valid for pm8038, pm8917, pm8921 + 11: ldo17 (PM8XXX_GPIO_VIN_L17) + valid for pm8038, pm8917, pm8921 + 12: smps3 (PM8XXX_GPIO_VIN_S3) + valid for pm8018, pm8058 + 13: smps4 (PM8XXX_GPIO_VIN_S4) + valid for pm8921 + 14: vph (PM8XXX_GPIO_VIN_VPH) + valid for pm8018, pm8038, pm8058, pm8917 pm8921 + +- drive-strength: + Usage: optional + Value type: <u32> + Definition: Selects the drive strength for the specified pins. Value + drive strengths are: + 0: no (PM8XXX_GPIO_STRENGTH_NO) + 1: high (PM8XXX_GPIO_STRENGTH_HIGH) + 2: medium (PM8XXX_GPIO_STRENGTH_MED) + 3: low (PM8XXX_GPIO_STRENGTH_LOW) + +- drive-push-pull: + Usage: optional + Value type: <none> + Definition: The specified pins are configured in push-pull mode. + +- drive-open-drain: + Usage: optional + Value type: <none> + Definition: The specified pins are configured in open-drain mode. + + +Example: + + pm8921_gpio: gpio@150 { + compatible = "qcom,pm8921-gpio"; + reg = <0x150>; + interrupts = <192 1>, <193 1>, <194 1>, + <195 1>, <196 1>, <197 1>, + <198 1>, <199 1>, <200 1>, + <201 1>, <202 1>, <203 1>, + <204 1>, <205 1>, <206 1>, + <207 1>, <208 1>, <209 1>, + <210 1>, <211 1>, <212 1>, + <213 1>, <214 1>, <215 1>, + <216 1>, <217 1>, <218 1>, + <219 1>, <220 1>, <221 1>, + <222 1>, <223 1>, <224 1>, + <225 1>, <226 1>, <227 1>, + <228 1>, <229 1>, <230 1>, + <231 1>, <232 1>, <233 1>, + <234 1>, <235 1>; + + gpio-controller; + #gpio-cells = <2>; + + pm8921_gpio_keys: gpio-keys { + volume-keys { + pins = "gpio20", "gpio21"; + function = "normal"; + + input-enable; + bias-pull-up; + drive-push-pull; + drive-strength = <PM8XXX_GPIO_STRENGTH_NO>; + power-source = <PM8XXX_GPIO_VIN_S4>; + }; + }; + }; diff --git a/include/dt-bindings/pinctrl/qcom,pm8xxx-gpio.h b/include/dt-bindings/pinctrl/qcom,pm8xxx-gpio.h new file mode 100644 index 0000000..6b66fff --- /dev/null +++ b/include/dt-bindings/pinctrl/qcom,pm8xxx-gpio.h @@ -0,0 +1,34 @@ +/* + * This header provides constants for the pm8xxx gpio binding. + */ + +#ifndef _DT_BINDINGS_PINCTRL_QCOM_PM8XXX_GPIO_H +#define _DT_BINDINGS_PINCTRL_QCOM_PM8XXX_GPIO_H + +#define PM8XXX_GPIO_PULL_UP_30 1 +#define PM8XXX_GPIO_PULL_UP_1P5 2 +#define PM8XXX_GPIO_PULL_UP_31P5 3 +#define PM8XXX_GPIO_PULL_UP_1P5_30 4 + +#define PM8XXX_GPIO_VIN_BB 0 +#define PM8XXX_GPIO_VIN_L2 1 +#define PM8XXX_GPIO_VIN_L3 2 +#define PM8XXX_GPIO_VIN_L4 3 +#define PM8XXX_GPIO_VIN_L5 4 +#define PM8XXX_GPIO_VIN_L6 5 +#define PM8XXX_GPIO_VIN_L7 6 +#define PM8XXX_GPIO_VIN_L8 7 +#define PM8XXX_GPIO_VIN_L11 8 +#define PM8XXX_GPIO_VIN_L14 9 +#define PM8XXX_GPIO_VIN_L15 10 +#define PM8XXX_GPIO_VIN_L17 11 +#define PM8XXX_GPIO_VIN_S3 12 +#define PM8XXX_GPIO_VIN_S4 13 +#define PM8XXX_GPIO_VIN_VPH 14 + +#define PM8XXX_GPIO_STRENGTH_NO 0 +#define PM8XXX_GPIO_STRENGTH_HIGH 1 +#define PM8XXX_GPIO_STRENGTH_MED 2 +#define PM8XXX_GPIO_STRENGTH_LOW 3 + +#endif -- 1.7.9.5 -- 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