xref: /freebsd/sys/contrib/device-tree/Bindings/pinctrl/qcom,ipq4019-pinctrl.txt (revision cfd6422a5217410fbd66f7a7a8a64d9d85e61229)
1Qualcomm Atheros IPQ4019 TLMM block
2
3This is the Top Level Mode Multiplexor block found on the Qualcomm IPQ8019
4platform, it provides pinctrl, pinmux, pinconf, and gpiolib facilities.
5
6Required properties:
7- compatible: "qcom,ipq4019-pinctrl"
8- reg: Should be the base address and length of the TLMM block.
9- interrupts: Should be the parent IRQ of the TLMM block.
10- interrupt-controller: Marks the device node as an interrupt controller.
11- #interrupt-cells: Should be two.
12- gpio-controller: Marks the device node as a GPIO controller.
13- #gpio-cells : Should be two.
14                The first cell is the gpio pin number and the
15                second cell is used for optional parameters.
16- gpio-ranges: see ../gpio/gpio.txt
17
18Optional properties:
19
20- gpio-reserved-ranges: see ../gpio/gpio.txt
21
22Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
23a general description of GPIO and interrupt bindings.
24
25Please refer to pinctrl-bindings.txt in this directory for details of the
26common pinctrl bindings used by client devices, including the meaning of the
27phrase "pin configuration node".
28
29The pin configuration nodes act as a container for an abitrary number of
30subnodes. Each of these subnodes represents some desired configuration for a
31pin, a group, or a list of pins or groups. This configuration can include the
32mux function to select on those pin(s)/group(s), and various pin configuration
33parameters, such as pull-up, drive strength, etc.
34
35The name of each subnode is not important; all subnodes should be enumerated
36and processed purely based on their content.
37
38Each subnode only affects those parameters that are explicitly listed. In
39other words, a subnode that lists a mux function but no pin configuration
40parameters implies no information about any pin configuration parameters.
41Similarly, a pin subnode that describes a pullup parameter implies no
42information about e.g. the mux function.
43
44
45The following generic properties as defined in pinctrl-bindings.txt are valid
46to specify in a pin configuration subnode:
47 pins, function, bias-disable, bias-pull-down, bias-pull-up, drive-open-drain,
48 drive-strength.
49
50Non-empty subnodes must specify the 'pins' property.
51Note that not all properties are valid for all pins.
52
53
54Valid values for qcom,pins are:
55  gpio0-gpio99
56    Supports mux, bias and drive-strength
57
58Valid values for qcom,function are:
59aud_pin, audio_pwm, blsp_i2c0, blsp_i2c1, blsp_spi0, blsp_spi1, blsp_uart0,
60blsp_uart1, chip_rst, gpio, i2s_rx, i2s_spdif_in, i2s_spdif_out, i2s_td, i2s_tx,
61jtag, led0, led1, led2, led3, led4, led5, led6, led7, led8, led9, led10, led11,
62mdc, mdio, pcie, pmu, prng_rosc, qpic, rgmii, rmii, sdio, smart0, smart1,
63smart2, smart3, tm, wifi0, wifi1
64
65Example:
66
67	tlmm: pinctrl@1000000 {
68		compatible = "qcom,ipq4019-pinctrl";
69		reg = <0x1000000 0x300000>;
70
71		gpio-controller;
72		#gpio-cells = <2>;
73		gpio-ranges = <&tlmm 0 0 100>;
74		interrupt-controller;
75		#interrupt-cells = <2>;
76		interrupts = <0 208 0>;
77
78		serial_pins: serial_pinmux {
79			mux {
80				pins = "gpio60", "gpio61";
81				function = "blsp_uart0";
82				bias-disable;
83			};
84		};
85	};
86