| Palmas Pincontrol bindings |
| |
| The pins of Palmas device can be set on different option and provides |
| the configuration for Pull UP/DOWN, open drain etc. |
| |
| Required properties: |
| - compatible: It must be one of following: |
| - "ti,palmas-pinctrl" for Palma series of the pincontrol. |
| - "ti,tps65913-pinctrl" for Palma series device TPS65913. |
| - "ti,tps80036-pinctrl" for Palma series device TPS80036. |
| |
| 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". |
| |
| Palmas's pin configuration nodes act as a container for an arbitrary number of |
| subnodes. Each of these subnodes represents some desired configuration for a |
| list of pins. This configuration can include the mux function to select on |
| those pin(s), and various pin configuration parameters, such as pull-up, |
| open drain. |
| |
| 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. |
| |
| Optional properties: |
| - ti,palmas-enable-dvfs1: Enable DVFS1. Configure pins for DVFS1 mode. |
| Selection primary or secondary function associated to I2C2_SCL_SCE, |
| I2C2_SDA_SDO pin/pad for DVFS1 interface |
| - ti,palmas-enable-dvfs2: Enable DVFS2. Configure pins for DVFS2 mode. |
| Selection primary or secondary function associated to GPADC_START |
| and SYSEN2 pin/pad for DVFS2 interface |
| |
| This binding uses the following generic properties as defined in |
| pinctrl-bindings.txt: |
| |
| Required: pins |
| Options: function, bias-disable, bias-pull-up, bias-pull-down, |
| bias-pin-default, drive-open-drain. |
| |
| Note that many of these properties are only valid for certain specific pins. |
| See the Palmas device datasheet for complete details regarding which pins |
| support which functionality. |
| |
| Valid values for pin names are: |
| gpio0, gpio1, gpio2, gpio3, gpio4, gpio5, gpio6, gpio7, gpio8, gpio9, |
| gpio10, gpio11, gpio12, gpio13, gpio14, gpio15, vac, powergood, |
| nreswarm, pwrdown, gpadc_start, reset_in, nsleep, enable1, enable2, |
| int. |
| |
| Valid value of function names are: |
| gpio, led, pwm, regen, sysen, clk32kgaudio, id, vbus_det, chrg_det, |
| vac, vacok, powergood, usb_psel, msecure, pwrhold, int, nreswarm, |
| simrsto, simrsti, low_vbat, wireless_chrg1, rcm, pwrdown, gpadc_start, |
| reset_in, nsleep, enable. |
| |
| There are 4 special functions: opt0, opt1, opt2 and opt3. If any of these |
| functions is selected then directly pins register will be written with 0, 1, 2 |
| or 3 respectively if it is valid for that pins or list of pins. |
| |
| Example: |
| palmas: tps65913 { |
| .... |
| pinctrl { |
| compatible = "ti,tps65913-pinctrl"; |
| ti,palmas-enable-dvfs1; |
| pinctrl-names = "default"; |
| pinctrl-0 = <&palmas_pins_state>; |
| |
| palmas_pins_state: pinmux { |
| gpio0 { |
| pins = "gpio0"; |
| function = "id"; |
| bias-pull-up; |
| }; |
| |
| vac { |
| pins = "vac"; |
| function = "vacok"; |
| bias-pull-down; |
| }; |
| |
| gpio5 { |
| pins = "gpio5"; |
| function = "opt0"; |
| drive-open-drain = <1>; |
| }; |
| }; |
| }; |
| .... |
| }; |