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Qualcomm MSM8916 TLMM block
This binding describes the Top Level Mode Multiplexer block found in the
MSM8916 platform.
- compatible:
Usage: required
Value type: <string>
Definition: must be "qcom,msm8916-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-gpio121,
sdc1_clk,
sdc1_cmd,
sdc1_data
sdc2_clk,
sdc2_cmd,
sdc2_data,
qdsd_cmd,
qdsd_data0,
qdsd_data1,
qdsd_data2,
qdsd_data3
- 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:
adsp_ext, alsp_int, atest_bbrx0, atest_bbrx1, atest_char, atest_char0,
atest_char1, atest_char2, atest_char3, atest_combodac, atest_gpsadc0,
atest_gpsadc1, atest_tsens, atest_wlan0, atest_wlan1, backlight_en,
bimc_dte0,bimc_dte1, blsp_i2c1, blsp_i2c2, blsp_i2c3, blsp_i2c4,
blsp_i2c5, blsp_i2c6, blsp_spi1, blsp_spi1_cs1, blsp_spi1_cs2,
blsp_spi1_cs3, blsp_spi2, blsp_spi2_cs1, blsp_spi2_cs2, blsp_spi2_cs3,
blsp_spi3, blsp_spi3_cs1, blsp_spi3_cs2, blsp_spi3_cs3, blsp_spi4,
blsp_spi5, blsp_spi6, blsp_uart1, blsp_uart2, blsp_uim1, blsp_uim2,
cam1_rst, cam1_standby, cam_mclk0, cam_mclk1, cci_async, cci_i2c,
cci_timer0, cci_timer1, cci_timer2, cdc_pdm0, codec_mad, dbg_out,
display_5v, dmic0_clk, dmic0_data, dsi_rst, ebi0_wrcdc, euro_us,
ext_lpass, flash_strobe, gcc_gp1_clk_a, gcc_gp1_clk_b, gcc_gp2_clk_a,
gcc_gp2_clk_b, gcc_gp3_clk_a, gcc_gp3_clk_b, gpio, gsm0_tx0, gsm0_tx1,
gsm1_tx0, gsm1_tx1, gyro_accl, kpsns0, kpsns1, kpsns2, ldo_en,
ldo_update, mag_int, mdp_vsync, modem_tsync, m_voc, nav_pps, nav_tsync,
pa_indicator, pbs0, pbs1, pbs2, pri_mi2s, pri_mi2s_ws, prng_rosc,
pwr_crypto_enabled_a, pwr_crypto_enabled_b, pwr_modem_enabled_a,
pwr_modem_enabled_b, pwr_nav_enabled_a, pwr_nav_enabled_b,
qdss_ctitrig_in_a0, qdss_ctitrig_in_a1, qdss_ctitrig_in_b0,
qdss_ctitrig_in_b1, qdss_ctitrig_out_a0, qdss_ctitrig_out_a1,
qdss_ctitrig_out_b0, qdss_ctitrig_out_b1, qdss_traceclk_a,
qdss_traceclk_b, qdss_tracectl_a, qdss_tracectl_b, qdss_tracedata_a,
qdss_tracedata_b, reset_n, sd_card, sd_write, sec_mi2s, smb_int,
ssbi_wtr0, ssbi_wtr1, uim1, uim2, uim3, uim_batt, wcss_bt, wcss_fm,
wcss_wlan, webcam1_rst
- 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@1000000 {
compatible = "qcom,msm8916-pinctrl";
reg = <0x1000000 0x300000>;
interrupts = <0 208 0>;
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
uart2: uart2-default {
mux {
pins = "gpio4", "gpio5";
function = "blsp_uart2";
};
tx {
pins = "gpio4";
drive-strength = <4>;
bias-disable;
};
rx {
pins = "gpio5";
drive-strength = <2>;
bias-pull-up;
};
};
};
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