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:
20 Value type: <prop-encoded-array>
21 Definition: Register base of the GPIO block and length.
25 Value type: <prop-encoded-array>
26 Definition: Must contain an array of encoded interrupt specifiers for
32 Definition: Mark the device node as a GPIO controller
37 Definition: Must be 2;
38 the first cell will be used to define gpio number and the
39 second denotes the flags for this gpio
41 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
42 a general description of GPIO and interrupt bindings.
44 Please refer to pinctrl-bindings.txt in this directory for details of the
45 common pinctrl bindings used by client devices, including the meaning of the
46 phrase "pin configuration node".
48 The pin configuration nodes act as a container for an arbitrary number of
49 subnodes. Each of these subnodes represents some desired configuration for a
50 pin or a list of pins. This configuration can include the
51 mux function to select on those pin(s), and various pin configuration
52 parameters, as listed below.
57 The name of each subnode is not important; all subnodes should be enumerated
58 and processed purely based on their content.
60 Each subnode only affects those parameters that are explicitly listed. In
61 other words, a subnode that lists a mux function but no pin configuration
62 parameters implies no information about any pin configuration parameters.
63 Similarly, a pin subnode that describes a pullup parameter implies no
64 information about e.g. the mux function.
66 The following generic properties as defined in pinctrl-bindings.txt are valid
67 to specify in a pin configuration subnode:
71 Value type: <string-array>
72 Definition: List of gpio pins affected by the properties specified in
73 this subnode. Valid pins are:
74 gpio1-gpio6 for pm8018
75 gpio1-gpio12 for pm8038
76 gpio1-gpio40 for pm8058
77 gpio1-gpio38 for pm8917
78 gpio1-gpio44 for pm8921
79 gpio1-gpio36 for pm8941
80 gpio1-gpio22 for pma8084
85 Definition: Specify the alternative function to be configured for the
86 specified pins. Valid values are:
99 Definition: The specified pins should be configured as no pull.
104 Definition: The specified pins should be configured as pull down.
109 Definition: The specified pins should be configured as pull up.
111 - qcom,pull-up-strength:
114 Definition: Specifies the strength to use for pull up, if selected.
115 Valid values are; as defined in
116 <dt-bindings/pinctrl/qcom,pmic-gpio.h>:
117 1: 30uA (PMIC_GPIO_PULL_UP_30)
118 2: 1.5uA (PMIC_GPIO_PULL_UP_1P5)
119 3: 31.5uA (PMIC_GPIO_PULL_UP_31P5)
120 4: 1.5uA + 30uA boost (PMIC_GPIO_PULL_UP_1P5_30)
121 If this property is ommited 30uA strength will be used if
124 - bias-high-impedance:
127 Definition: The specified pins will put in high-Z mode and disabled.
132 Definition: The specified pins are put in input mode.
137 Definition: The specified pins are configured in output mode, driven
143 Definition: The specified pins are configured in output mode, driven
149 Definition: Selects the power source for the specified pins. Valid
150 power sources are defined per chip in
151 <dt-bindings/pinctrl/qcom,pmic-gpio.h>
153 - qcom,drive-strength:
156 Definition: Selects the drive strength for the specified pins. Value
158 0: no (PMIC_GPIO_STRENGTH_NO)
159 1: high (PMIC_GPIO_STRENGTH_HIGH) 0.9mA @ 1.8V - 1.9mA @ 2.6V
160 2: medium (PMIC_GPIO_STRENGTH_MED) 0.6mA @ 1.8V - 1.25mA @ 2.6V
161 3: low (PMIC_GPIO_STRENGTH_LOW) 0.15mA @ 1.8V - 0.3mA @ 2.6V
162 as defined in <dt-bindings/pinctrl/qcom,pmic-gpio.h>
167 Definition: The specified pins are configured in push-pull mode.
172 Definition: The specified pins are configured in open-drain mode.
177 Definition: The specified pins are configured in open-source mode.
181 pm8921_gpio: gpio@150 {
182 compatible = "qcom,pm8921-gpio";
184 interrupts = <192 1>, <193 1>, <194 1>,
185 <195 1>, <196 1>, <197 1>,
186 <198 1>, <199 1>, <200 1>,
187 <201 1>, <202 1>, <203 1>,
188 <204 1>, <205 1>, <206 1>,
189 <207 1>, <208 1>, <209 1>,
190 <210 1>, <211 1>, <212 1>,
191 <213 1>, <214 1>, <215 1>,
192 <216 1>, <217 1>, <218 1>,
193 <219 1>, <220 1>, <221 1>,
194 <222 1>, <223 1>, <224 1>,
195 <225 1>, <226 1>, <227 1>,
196 <228 1>, <229 1>, <230 1>,
197 <231 1>, <232 1>, <233 1>,
203 pm8921_gpio_keys: gpio-keys {
205 pins = "gpio20", "gpio21";
211 qcom,drive-strength = <PMIC_GPIO_STRENGTH_NO>;
212 power-source = <PM8921_GPIO_S4>;