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Qualcomm IPQ8064 TLMM block
Required properties:
- compatible: "qcom,ipq8064-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".
Qualcomm's 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,
output-low, output-high.
Non-empty subnodes must specify the 'pins' property.
Valid values for qcom,pins are:
gpio0-gpio68
Supports mux, bias, and drive-strength
sdc3_clk, sdc3_cmd, sdc3_data
Supports bias and drive-strength
Valid values for function are:
mdio, mi2s, pdm, ssbi, spmi, audio_pcm, gpio, gsbi1, gsbi2, gsbi4, gsbi5,
gsbi5_spi_cs1, gsbi5_spi_cs2, gsbi5_spi_cs3, gsbi6, gsbi7, nss_spi, sdc1,
spdif, nand, tsif1, tsif2, usb_fs_n, usb_fs, usb2_hsic, rgmii2, sata,
pcie1_rst, pcie1_prsnt, pcie1_pwren_n, pcie1_pwren, pcie1_pwrflt,
pcie1_clk_req, pcie2_rst, pcie2_prsnt, pcie2_pwren_n, pcie2_pwren,
pcie2_pwrflt, pcie2_clk_req, pcie3_rst, pcie3_prsnt, pcie3_pwren_n,
pcie3_pwren, pcie3_pwrflt, pcie3_clk_req, ps_hold
Example:
pinmux: pinctrl@800000 {
compatible = "qcom,ipq8064-pinctrl";
reg = <0x800000 0x4000>;
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <0 32 0x4>;
pinctrl-names = "default";
pinctrl-0 = <&gsbi5_uart_default>;
gsbi5_uart_default: gsbi5_uart_default {
mux {
pins = "gpio18", "gpio19";
function = "gsbi5";
};
tx {
pins = "gpio18";
drive-strength = <4>;
bias-disable;
};
rx {
pins = "gpio19";
drive-strength = <2>;
bias-pull-up;
};
};
};
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