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:
22 Value type: <prop-encoded-array>
23 Definition: Register base of the GPIO block and length.
27 Value type: <prop-encoded-array>
28 Definition: Must contain an array of encoded interrupt specifiers for
34 Definition: Mark the device node as a GPIO controller
39 Definition: Must be 2;
40 the first cell will be used to define gpio number and the
41 second denotes the flags for this gpio
43 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
44 a general description of GPIO and interrupt bindings.
46 Please refer to pinctrl-bindings.txt in this directory for details of the
47 common pinctrl bindings used by client devices, including the meaning of the
48 phrase "pin configuration node".
50 The pin configuration nodes act as a container for an arbitrary number of
51 subnodes. Each of these subnodes represents some desired configuration for a
52 pin or a list of pins. This configuration can include the
53 mux function to select on those pin(s), and various pin configuration
54 parameters, as listed below.
59 The name of each subnode is not important; all subnodes should be enumerated
60 and processed purely based on their content.
62 Each subnode only affects those parameters that are explicitly listed. In
63 other words, a subnode that lists a mux function but no pin configuration
64 parameters implies no information about any pin configuration parameters.
65 Similarly, a pin subnode that describes a pullup parameter implies no
66 information about e.g. the mux function.
68 The following generic properties as defined in pinctrl-bindings.txt are valid
69 to specify in a pin configuration subnode:
73 Value type: <string-array>
74 Definition: List of gpio pins affected by the properties specified in
75 this subnode. Valid pins are:
76 gpio1-gpio6 for pm8018
77 gpio1-gpio12 for pm8038
78 gpio1-gpio40 for pm8058
79 gpio1-gpio4 for pm8916
80 gpio1-gpio38 for pm8917
81 gpio1-gpio44 for pm8921
82 gpio1-gpio36 for pm8941
83 gpio1-gpio22 for pm8994
84 gpio1-gpio22 for pma8084
89 Definition: Specify the alternative function to be configured for the
90 specified pins. Valid values are:
103 Definition: The specified pins should be configured as no pull.
108 Definition: The specified pins should be configured as pull down.
113 Definition: The specified pins should be configured as pull up.
115 - qcom,pull-up-strength:
118 Definition: Specifies the strength to use for pull up, if selected.
119 Valid values are; as defined in
120 <dt-bindings/pinctrl/qcom,pmic-gpio.h>:
121 1: 30uA (PMIC_GPIO_PULL_UP_30)
122 2: 1.5uA (PMIC_GPIO_PULL_UP_1P5)
123 3: 31.5uA (PMIC_GPIO_PULL_UP_31P5)
124 4: 1.5uA + 30uA boost (PMIC_GPIO_PULL_UP_1P5_30)
125 If this property is ommited 30uA strength will be used if
128 - bias-high-impedance:
131 Definition: The specified pins will put in high-Z mode and disabled.
136 Definition: The specified pins are put in input mode.
141 Definition: The specified pins are configured in output mode, driven
147 Definition: The specified pins are configured in output mode, driven
153 Definition: Selects the power source for the specified pins. Valid
154 power sources are defined per chip in
155 <dt-bindings/pinctrl/qcom,pmic-gpio.h>
157 - qcom,drive-strength:
160 Definition: Selects the drive strength for the specified pins. Value
162 0: no (PMIC_GPIO_STRENGTH_NO)
163 1: high (PMIC_GPIO_STRENGTH_HIGH) 0.9mA @ 1.8V - 1.9mA @ 2.6V
164 2: medium (PMIC_GPIO_STRENGTH_MED) 0.6mA @ 1.8V - 1.25mA @ 2.6V
165 3: low (PMIC_GPIO_STRENGTH_LOW) 0.15mA @ 1.8V - 0.3mA @ 2.6V
166 as defined in <dt-bindings/pinctrl/qcom,pmic-gpio.h>
171 Definition: The specified pins are configured in push-pull mode.
176 Definition: The specified pins are configured in open-drain mode.
181 Definition: The specified pins are configured in open-source mode.
185 pm8921_gpio: gpio@150 {
186 compatible = "qcom,pm8921-gpio";
188 interrupts = <192 1>, <193 1>, <194 1>,
189 <195 1>, <196 1>, <197 1>,
190 <198 1>, <199 1>, <200 1>,
191 <201 1>, <202 1>, <203 1>,
192 <204 1>, <205 1>, <206 1>,
193 <207 1>, <208 1>, <209 1>,
194 <210 1>, <211 1>, <212 1>,
195 <213 1>, <214 1>, <215 1>,
196 <216 1>, <217 1>, <218 1>,
197 <219 1>, <220 1>, <221 1>,
198 <222 1>, <223 1>, <224 1>,
199 <225 1>, <226 1>, <227 1>,
200 <228 1>, <229 1>, <230 1>,
201 <231 1>, <232 1>, <233 1>,
207 pm8921_gpio_keys: gpio-keys {
209 pins = "gpio20", "gpio21";
215 qcom,drive-strength = <PMIC_GPIO_STRENGTH_NO>;
216 power-source = <PM8921_GPIO_S4>;