dt-bindings: pinctrl: Add Qualcomm SDM845 TLMM binding

Qualcomm SDM845 TLMM block

This binding describes the Top Level Mode Multiplexer block found in the

SDM845 platform.

- compatible:

	Usage: required

	Value type: <string>

	Definition: must be "qcom,sdm845-pinctrl"

- reg:

	Usage: required

	Value type: <prop-encoded-array>

	Definition: the base address and size of the TLMM register space.

- interrupts:

	Usage: required

	Value type: <prop-encoded-array>

	Definition: should specify the TLMM summary IRQ.

- interrupt-controller:

	Usage: required

	Value type: <none>

	Definition: identifies this node as an interrupt controller

- #interrupt-cells:

	Usage: required

	Value type: <u32>

	Definition: must be 2. Specifying the pin number and flags, as defined

		    in <dt-bindings/interrupt-controller/irq.h>

- gpio-controller:

	Usage: required

	Value type: <none>

	Definition: identifies this node as a gpio controller

- #gpio-cells:

	Usage: required

	Value type: <u32>

	Definition: must be 2. Specifying the pin number and flags, as defined

		    in <dt-bindings/gpio/gpio.h>

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 arbitrary 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.

PIN CONFIGURATION NODES:

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:

	Usage: required

	Value type: <string-array>

	Definition: List of gpio pins affected by the properties specified in

		    this subnode.

		    Valid pins are:

		      gpio0-gpio149

		        Supports mux, bias and drive-strength

		      sdc2_clk, sdc2_cmd, sdc2_data

		        Supports bias and drive-strength

- function:

	Usage: required

	Value type: <string>

	Definition: Specify the alternative function to be configured for the

		    specified pins. Functions are only valid for gpio pins.

		    Valid values are:

		    gpio, adsp_ext, agera_pll, atest_char, atest_tsens,

		    atest_tsens2, atest_usb1, atest_usb10, atest_usb11,

		    atest_usb12, atest_usb13, atest_usb2, atest_usb20,

		    atest_usb21, atest_usb22, atest_usb23, audio_ref,

		    btfm_slimbus, cam_mclk, cci_async, cci_i2c, cci_timer0,

		    cci_timer1, cci_timer2, cci_timer3, cci_timer4, cri_trng,

		    cri_trng0, cri_trng1, dbg_out, ddr_bist, ddr_pxi0,

		    ddr_pxi1, ddr_pxi2, ddr_pxi3, edp_hot, edp_lcd, gcc_gp1,

		    gcc_gp2, gcc_gp3, jitter_bist, ldo_en, ldo_update,

		    lpass_slimbus, m_voc, mdp_vsync, mdp_vsync0, mdp_vsync1,

		    mdp_vsync2, mdp_vsync3, mss_lte, nav_pps, pa_indicator,

		    pci_e0, pci_e1, phase_flag, pll_bist, pll_bypassnl,

		    pll_reset, pri_mi2s, pri_mi2s_ws, prng_rosc, qdss_cti,

		    qdss, qlink_enable, qlink_request, qua_mi2s, qup0, qup1,

		    qup10, qup11, qup12, qup13, qup14, qup15, qup2, qup3, qup4,

		    qup5, qup6, qup7, qup8, qup9, qup_l4, qup_l5, qup_l6,

		    qspi_clk, qspi_cs, qspi_data, sd_write, sdc4_clk, sdc4_cmd,

		    sdc4_data, sec_mi2s, sp_cmu, spkr_i2s, ter_mi2s, tgu_ch0,

		    tgu_ch1, tgu_ch2, tgu_ch3, tsense_pwm1, tsense_pwm2,

		    tsif1_clk, tsif1_data, tsif1_en, tsif1_error, tsif1_sync,

		    tsif2_clk, tsif2_data, tsif2_en, tsif2_error, tsif2_sync,

		    uim1_clk, uim1_data, uim1_present, uim1_reset, uim2_clk,

		    uim2_data, uim2_present, uim2_reset, uim_batt, usb_phy,

		    vfr_1, vsense_trigger, wlan1_adc0, wlan1_adc1, wlan2_adc0,

		    wlan2_adc1,

- bias-disable:

	Usage: optional

	Value type: <none>

	Definition: The specified pins should be configued as no pull.

- bias-pull-down:

	Usage: optional

	Value type: <none>

	Definition: The specified pins should be configued as pull down.

- bias-pull-up:

	Usage: optional

	Value type: <none>

	Definition: The specified pins should be configued as pull up.

- output-high:

	Usage: optional

	Value type: <none>

	Definition: The specified pins are configured in output mode, driven

		    high.

		    Not valid for sdc pins.

- output-low:

	Usage: optional

	Value type: <none>

	Definition: The specified pins are configured in output mode, driven

		    low.

		    Not valid for sdc pins.

- drive-strength:

	Usage: optional

	Value type: <u32>

	Definition: Selects the drive strength for the specified pins, in mA.

		    Valid values are: 2, 4, 6, 8, 10, 12, 14 and 16

Example:

	tlmm: pinctrl@3400000 {

		compatible = "qcom,sdm845-pinctrl";

		reg = <0x03400000 0xc00000>;

		interrupts = <GIC_SPI 208 0>;

		gpio-controller;

		#gpio-cells = <2>;

		interrupt-controller;

		#interrupt-cells = <2>;

		qup9_active: qup9-active {

			mux {

				pins = "gpio4", "gpio5";

				function = "qup9";

			};

			config {

				pins = "gpio4", "gpio5";

				drive-strength = <2>;

				bias-disable;

			};

		};

	};