1 Qualcomm PMIC GPIO block
3 This binding describes the GPIO block(s) found in the 8xxx series of
9 Definition: must be one of:
21 Value type: <prop-encoded-array>
22 Definition: Register base of the GPIO block and length.
26 Value type: <prop-encoded-array>
27 Definition: Must contain an array of encoded interrupt specifiers for
33 Definition: Mark the device node as a GPIO controller
38 Definition: Must be 2;
39 the first cell will be used to define gpio number and the
40 second denotes the flags for this gpio
42 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
43 a general description of GPIO and interrupt bindings.
45 Please refer to pinctrl-bindings.txt in this directory for details of the
46 common pinctrl bindings used by client devices, including the meaning of the
47 phrase "pin configuration node".
49 The pin configuration nodes act as a container for an arbitrary number of
50 subnodes. Each of these subnodes represents some desired configuration for a
51 pin or a list of pins. This configuration can include the
52 mux function to select on those pin(s), and various pin configuration
53 parameters, as listed below.
58 The name of each subnode is not important; all subnodes should be enumerated
59 and processed purely based on their content.
61 Each subnode only affects those parameters that are explicitly listed. In
62 other words, a subnode that lists a mux function but no pin configuration
63 parameters implies no information about any pin configuration parameters.
64 Similarly, a pin subnode that describes a pullup parameter implies no
65 information about e.g. the mux function.
67 The following generic properties as defined in pinctrl-bindings.txt are valid
68 to specify in a pin configuration subnode:
72 Value type: <string-array>
73 Definition: List of gpio pins affected by the properties specified in
74 this subnode. Valid pins are:
75 gpio1-gpio6 for pm8018
76 gpio1-gpio12 for pm8038
77 gpio1-gpio40 for pm8058
78 gpio1-gpio4 for pm8916
79 gpio1-gpio38 for pm8917
80 gpio1-gpio44 for pm8921
81 gpio1-gpio36 for pm8941
82 gpio1-gpio22 for pma8084
87 Definition: Specify the alternative function to be configured for the
88 specified pins. Valid values are:
101 Definition: The specified pins should be configured as no pull.
106 Definition: The specified pins should be configured as pull down.
111 Definition: The specified pins should be configured as pull up.
113 - qcom,pull-up-strength:
116 Definition: Specifies the strength to use for pull up, if selected.
117 Valid values are; as defined in
118 <dt-bindings/pinctrl/qcom,pmic-gpio.h>:
119 1: 30uA (PMIC_GPIO_PULL_UP_30)
120 2: 1.5uA (PMIC_GPIO_PULL_UP_1P5)
121 3: 31.5uA (PMIC_GPIO_PULL_UP_31P5)
122 4: 1.5uA + 30uA boost (PMIC_GPIO_PULL_UP_1P5_30)
123 If this property is ommited 30uA strength will be used if
126 - bias-high-impedance:
129 Definition: The specified pins will put in high-Z mode and disabled.
134 Definition: The specified pins are put in input mode.
139 Definition: The specified pins are configured in output mode, driven
145 Definition: The specified pins are configured in output mode, driven
151 Definition: Selects the power source for the specified pins. Valid
152 power sources are defined per chip in
153 <dt-bindings/pinctrl/qcom,pmic-gpio.h>
155 - qcom,drive-strength:
158 Definition: Selects the drive strength for the specified pins. Value
160 0: no (PMIC_GPIO_STRENGTH_NO)
161 1: high (PMIC_GPIO_STRENGTH_HIGH) 0.9mA @ 1.8V - 1.9mA @ 2.6V
162 2: medium (PMIC_GPIO_STRENGTH_MED) 0.6mA @ 1.8V - 1.25mA @ 2.6V
163 3: low (PMIC_GPIO_STRENGTH_LOW) 0.15mA @ 1.8V - 0.3mA @ 2.6V
164 as defined in <dt-bindings/pinctrl/qcom,pmic-gpio.h>
169 Definition: The specified pins are configured in push-pull mode.
174 Definition: The specified pins are configured in open-drain mode.
179 Definition: The specified pins are configured in open-source mode.
183 pm8921_gpio: gpio@150 {
184 compatible = "qcom,pm8921-gpio";
186 interrupts = <192 1>, <193 1>, <194 1>,
187 <195 1>, <196 1>, <197 1>,
188 <198 1>, <199 1>, <200 1>,
189 <201 1>, <202 1>, <203 1>,
190 <204 1>, <205 1>, <206 1>,
191 <207 1>, <208 1>, <209 1>,
192 <210 1>, <211 1>, <212 1>,
193 <213 1>, <214 1>, <215 1>,
194 <216 1>, <217 1>, <218 1>,
195 <219 1>, <220 1>, <221 1>,
196 <222 1>, <223 1>, <224 1>,
197 <225 1>, <226 1>, <227 1>,
198 <228 1>, <229 1>, <230 1>,
199 <231 1>, <232 1>, <233 1>,
205 pm8921_gpio_keys: gpio-keys {
207 pins = "gpio20", "gpio21";
213 qcom,drive-strength = <PMIC_GPIO_STRENGTH_NO>;
214 power-source = <PM8921_GPIO_S4>;