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-Qualcomm PMIC GPIO block
-
-This binding describes the GPIO block(s) found in the 8xxx series of
-PMIC's from Qualcomm.
-
-- compatible:
- Usage: required
- Value type: <string>
- Definition: must be one of:
- "qcom,pm8005-gpio"
- "qcom,pm8018-gpio"
- "qcom,pm8038-gpio"
- "qcom,pm8058-gpio"
- "qcom,pm8916-gpio"
- "qcom,pm8917-gpio"
- "qcom,pm8921-gpio"
- "qcom,pm8941-gpio"
- "qcom,pm8950-gpio"
- "qcom,pm8994-gpio"
- "qcom,pm8998-gpio"
- "qcom,pma8084-gpio"
- "qcom,pmi8950-gpio"
- "qcom,pmi8994-gpio"
- "qcom,pmi8998-gpio"
- "qcom,pms405-gpio"
- "qcom,pm660-gpio"
- "qcom,pm660l-gpio"
- "qcom,pm8150-gpio"
- "qcom,pm8150b-gpio"
- "qcom,pm8350-gpio"
- "qcom,pm8350b-gpio"
- "qcom,pm8350c-gpio"
- "qcom,pmk8350-gpio"
- "qcom,pm7325-gpio"
- "qcom,pmr735a-gpio"
- "qcom,pmr735b-gpio"
- "qcom,pm6150-gpio"
- "qcom,pm6150l-gpio"
- "qcom,pm8008-gpio"
- "qcom,pmx55-gpio"
-
- And must contain either "qcom,spmi-gpio" or "qcom,ssbi-gpio"
- if the device is on an spmi bus or an ssbi bus respectively
-
-- reg:
- Usage: required
- Value type: <prop-encoded-array>
- Definition: Register base of the GPIO block and length.
-
-- 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 arbitrary 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, as 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-gpio4 for pm8005
- gpio1-gpio6 for pm8018
- gpio1-gpio12 for pm8038
- gpio1-gpio40 for pm8058
- gpio1-gpio4 for pm8916
- gpio1-gpio38 for pm8917
- gpio1-gpio44 for pm8921
- gpio1-gpio36 for pm8941
- gpio1-gpio8 for pm8950 (hole on gpio3)
- gpio1-gpio22 for pm8994
- gpio1-gpio26 for pm8998
- gpio1-gpio22 for pma8084
- gpio1-gpio2 for pmi8950
- gpio1-gpio10 for pmi8994
- gpio1-gpio12 for pms405 (holes on gpio1, gpio9 and gpio10)
- gpio1-gpio10 for pm8150 (holes on gpio2, gpio5, gpio7
- and gpio8)
- gpio1-gpio12 for pm8150b (holes on gpio3, gpio4, gpio7)
- gpio1-gpio12 for pm8150l (hole on gpio7)
- gpio1-gpio10 for pm8350
- gpio1-gpio8 for pm8350b
- gpio1-gpio9 for pm8350c
- gpio1-gpio4 for pmk8350
- gpio1-gpio10 for pm7325
- gpio1-gpio4 for pmr735a
- gpio1-gpio4 for pmr735b
- gpio1-gpio10 for pm6150
- gpio1-gpio12 for pm6150l
- gpio1-gpio2 for pm8008
- gpio1-gpio11 for pmx55 (holes on gpio3, gpio7, gpio10
- and gpio11)
-
-- function:
- Usage: required
- 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",
- And following values are supported by LV/MV GPIO subtypes:
- "func3",
- "func4"
-
-- bias-disable:
- Usage: optional
- Value type: <none>
- Definition: The specified pins should be configured as no pull.
-
-- bias-pull-down:
- Usage: optional
- Value type: <none>
- Definition: The specified pins should be configured as pull down.
-
-- bias-pull-up:
- Usage: optional
- Value type: <empty>
- Definition: The specified pins should be configured as pull up.
-
-- qcom,pull-up-strength:
- Usage: optional
- Value type: <u32>
- Definition: Specifies the strength to use for pull up, if selected.
- Valid values are; as defined in
- <dt-bindings/pinctrl/qcom,pmic-gpio.h>:
- 1: 30uA (PMIC_GPIO_PULL_UP_30)
- 2: 1.5uA (PMIC_GPIO_PULL_UP_1P5)
- 3: 31.5uA (PMIC_GPIO_PULL_UP_31P5)
- 4: 1.5uA + 30uA boost (PMIC_GPIO_PULL_UP_1P5_30)
- If this property is omitted 30uA strength will be used if
- pull up is selected
-
-- 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 defined per chip in
- <dt-bindings/pinctrl/qcom,pmic-gpio.h>
-
-- qcom,drive-strength:
- Usage: optional
- Value type: <u32>
- Definition: Selects the drive strength for the specified pins. Value
- drive strengths are:
- 0: no (PMIC_GPIO_STRENGTH_NO)
- 1: high (PMIC_GPIO_STRENGTH_HIGH) 0.9mA @ 1.8V - 1.9mA @ 2.6V
- 2: medium (PMIC_GPIO_STRENGTH_MED) 0.6mA @ 1.8V - 1.25mA @ 2.6V
- 3: low (PMIC_GPIO_STRENGTH_LOW) 0.15mA @ 1.8V - 0.3mA @ 2.6V
- as defined in <dt-bindings/pinctrl/qcom,pmic-gpio.h>
-
-- 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.
-
-- drive-open-source:
- Usage: optional
- Value type: <none>
- Definition: The specified pins are configured in open-source mode.
-
-- qcom,analog-pass:
- Usage: optional
- Value type: <none>
- Definition: The specified pins are configured in analog-pass-through mode.
-
-- qcom,atest:
- Usage: optional
- Value type: <u32>
- Definition: Selects ATEST rail to route to GPIO when it's configured
- in analog-pass-through mode.
- Valid values are 1-4 corresponding to ATEST1 to ATEST4.
-
-- qcom,dtest-buffer:
- Usage: optional
- Value type: <u32>
- Definition: Selects DTEST rail to route to GPIO when it's configured
- as digital input.
- Valid values are 1-4 corresponding to DTEST1 to DTEST4.
-
-Example:
-
- pm8921_gpio: gpio@150 {
- compatible = "qcom,pm8921-gpio", "qcom,ssbi-gpio";
- reg = <0x150 0x160>;
- 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;
- qcom,drive-strength = <PMIC_GPIO_STRENGTH_NO>;
- power-source = <PM8921_GPIO_S4>;
- };
- };
- };
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-29 12:03:44 +0300