1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374 |
- Qualcomm Atheros IPQ4019 TLMM block
- This is the Top Level Mode Multiplexor block found on the Qualcomm IPQ8019
- platform, it provides pinctrl, pinmux, pinconf, and gpiolib facilities.
- Required properties:
- - compatible: "qcom,ipq4019-pinctrl"
- - reg: Should be the base address and length of the TLMM block.
- - interrupts: Should be the parent IRQ of the TLMM block.
- - interrupt-controller: Marks the device node as an interrupt controller.
- - #interrupt-cells: Should be two.
- - gpio-controller: Marks the device node as a GPIO controller.
- - #gpio-cells : Should be two.
- The first cell is the gpio pin number and the
- second cell is used for optional parameters.
- Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
- a general description of GPIO and interrupt bindings.
- 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".
- The pin configuration nodes act as a container for an abitrary number of
- subnodes. Each of these subnodes represents some desired configuration for a
- pin, a group, or a list of pins or groups. This configuration can include the
- mux function to select on those pin(s)/group(s), and various pin configuration
- parameters, such as pull-up, drive strength, etc.
- 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.
- The following generic properties as defined in pinctrl-bindings.txt are valid
- to specify in a pin configuration subnode:
- pins, function, bias-disable, bias-pull-down, bias-pull,up, drive-strength.
- Non-empty subnodes must specify the 'pins' property.
- Note that not all properties are valid for all pins.
- Valid values for qcom,pins are:
- gpio0-gpio99
- Supports mux, bias and drive-strength
- Valid values for qcom,function are:
- gpio, blsp_uart1, blsp_i2c0, blsp_i2c1, blsp_uart0, blsp_spi1, blsp_spi0
- Example:
- tlmm: pinctrl@1000000 {
- compatible = "qcom,ipq4019-pinctrl";
- reg = <0x1000000 0x300000>;
- gpio-controller;
- #gpio-cells = <2>;
- interrupt-controller;
- #interrupt-cells = <2>;
- interrupts = <0 208 0>;
- serial_pins: serial_pinmux {
- mux {
- pins = "gpio60", "gpio61";
- function = "blsp_uart0";
- bias-disable;
- };
- };
- };
|