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 And must contain either "qcom,spmi-gpio" or "qcom,ssbi-gpio"
21 if the device is on an spmi bus or an ssbi bus respectively
25 Value type: <prop-encoded-array>
26 Definition: Register base of the GPIO block and length.
30 Value type: <prop-encoded-array>
31 Definition: Must contain an array of encoded interrupt specifiers for
37 Definition: Mark the device node as a GPIO controller
42 Definition: Must be 2;
43 the first cell will be used to define gpio number and the
44 second denotes the flags for this gpio
46 Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
47 a general description of GPIO and interrupt bindings.
49 Please refer to pinctrl-bindings.txt in this directory for details of the
50 common pinctrl bindings used by client devices, including the meaning of the
51 phrase "pin configuration node".
53 The pin configuration nodes act as a container for an arbitrary number of
54 subnodes. Each of these subnodes represents some desired configuration for a
55 pin or a list of pins. This configuration can include the
56 mux function to select on those pin(s), and various pin configuration
57 parameters, as listed below.
62 The name of each subnode is not important; all subnodes should be enumerated
63 and processed purely based on their content.
65 Each subnode only affects those parameters that are explicitly listed. In
66 other words, a subnode that lists a mux function but no pin configuration
67 parameters implies no information about any pin configuration parameters.
68 Similarly, a pin subnode that describes a pullup parameter implies no
69 information about e.g. the mux function.
71 The following generic properties as defined in pinctrl-bindings.txt are valid
72 to specify in a pin configuration subnode:
76 Value type: <string-array>
77 Definition: List of gpio pins affected by the properties specified in
78 this subnode. Valid pins are:
79 gpio1-gpio6 for pm8018
80 gpio1-gpio12 for pm8038
81 gpio1-gpio40 for pm8058
82 gpio1-gpio4 for pm8916
83 gpio1-gpio38 for pm8917
84 gpio1-gpio44 for pm8921
85 gpio1-gpio36 for pm8941
86 gpio1-gpio22 for pm8994
87 gpio1-gpio22 for pma8084
92 Definition: Specify the alternative function to be configured for the
93 specified pins. Valid values are:
106 Definition: The specified pins should be configured as no pull.
111 Definition: The specified pins should be configured as pull down.
116 Definition: The specified pins should be configured as pull up.
118 - qcom,pull-up-strength:
121 Definition: Specifies the strength to use for pull up, if selected.
122 Valid values are; as defined in
123 <dt-bindings/pinctrl/qcom,pmic-gpio.h>:
124 1: 30uA (PMIC_GPIO_PULL_UP_30)
125 2: 1.5uA (PMIC_GPIO_PULL_UP_1P5)
126 3: 31.5uA (PMIC_GPIO_PULL_UP_31P5)
127 4: 1.5uA + 30uA boost (PMIC_GPIO_PULL_UP_1P5_30)
128 If this property is omitted 30uA strength will be used if
131 - bias-high-impedance:
134 Definition: The specified pins will put in high-Z mode and disabled.
139 Definition: The specified pins are put in input mode.
144 Definition: The specified pins are configured in output mode, driven
150 Definition: The specified pins are configured in output mode, driven
156 Definition: Selects the power source for the specified pins. Valid
157 power sources are defined per chip in
158 <dt-bindings/pinctrl/qcom,pmic-gpio.h>
160 - qcom,drive-strength:
163 Definition: Selects the drive strength for the specified pins. Value
165 0: no (PMIC_GPIO_STRENGTH_NO)
166 1: high (PMIC_GPIO_STRENGTH_HIGH) 0.9mA @ 1.8V - 1.9mA @ 2.6V
167 2: medium (PMIC_GPIO_STRENGTH_MED) 0.6mA @ 1.8V - 1.25mA @ 2.6V
168 3: low (PMIC_GPIO_STRENGTH_LOW) 0.15mA @ 1.8V - 0.3mA @ 2.6V
169 as defined in <dt-bindings/pinctrl/qcom,pmic-gpio.h>
174 Definition: The specified pins are configured in push-pull mode.
179 Definition: The specified pins are configured in open-drain mode.
184 Definition: The specified pins are configured in open-source mode.
188 pm8921_gpio: gpio@150 {
189 compatible = "qcom,pm8921-gpio", "qcom,ssbi-gpio";
191 interrupts = <192 1>, <193 1>, <194 1>,
192 <195 1>, <196 1>, <197 1>,
193 <198 1>, <199 1>, <200 1>,
194 <201 1>, <202 1>, <203 1>,
195 <204 1>, <205 1>, <206 1>,
196 <207 1>, <208 1>, <209 1>,
197 <210 1>, <211 1>, <212 1>,
198 <213 1>, <214 1>, <215 1>,
199 <216 1>, <217 1>, <218 1>,
200 <219 1>, <220 1>, <221 1>,
201 <222 1>, <223 1>, <224 1>,
202 <225 1>, <226 1>, <227 1>,
203 <228 1>, <229 1>, <230 1>,
204 <231 1>, <232 1>, <233 1>,
210 pm8921_gpio_keys: gpio-keys {
212 pins = "gpio20", "gpio21";
218 qcom,drive-strength = <PMIC_GPIO_STRENGTH_NO>;
219 power-source = <PM8921_GPIO_S4>;