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Qualcomm APQ8084 TLMM block
This binding describes the Top Level Mode Multiplexer block found in the
MSM8960 platform.
- compatible:
Usage: required
Value type: <string>
Definition: must be "qcom,apq8084-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 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.
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-gpio146,
sdc1_clk,
sdc1_cmd,
sdc1_data
sdc2_clk,
sdc2_cmd,
sdc2_data
- 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, audio_ref, blsp_i2c1, blsp_i2c2, blsp_i2c3,
blsp_i2c4, blsp_i2c5, blsp_i2c6, blsp_i2c7, blsp_i2c8,
blsp_i2c9, blsp_i2c10, blsp_i2c11, blsp_i2c12,
blsp_spi1, blsp_spi2, blsp_spi3, blsp_spi4, blsp_spi5,
blsp_spi6, blsp_spi7, blsp_spi8, blsp_spi9, blsp_spi10,
blsp_spi11, blsp_spi12, blsp_uart1, blsp_uart2, blsp_uart3,
blsp_uart4, blsp_uart5, blsp_uart6, blsp_uart7, blsp_uart8,
blsp_uart9, blsp_uart10, blsp_uart11, blsp_uart12,
blsp_uim1, blsp_uim2, blsp_uim3, blsp_uim4, blsp_uim5,
blsp_uim6, blsp_uim7, blsp_uim8, blsp_uim9, blsp_uim10,
blsp_uim11, blsp_uim12, cam_mclk0, cam_mclk1, cam_mclk2,
cam_mclk3, cci_async, cci_async_in0, cci_i2c0, cci_i2c1,
cci_timer0, cci_timer1, cci_timer2, cci_timer3, cci_timer4,
edp_hpd, gcc_gp1, gcc_gp2, gcc_gp3, gcc_obt, gcc_vtt,i
gp_mn, gp_pdm0, gp_pdm1, gp_pdm2, gp0_clk, gp1_clk, gpio,
hdmi_cec, hdmi_ddc, hdmi_dtest, hdmi_hpd, hdmi_rcv, hsic,
ldo_en, ldo_update, mdp_vsync, pci_e0, pci_e0_n, pci_e0_rst,
pci_e1, pci_e1_rst, pci_e1_rst_n, pci_e1_clkreq_n, pri_mi2s,
qua_mi2s, sata_act, sata_devsleep, sata_devsleep_n,
sd_write, sdc_emmc_mode, sdc3, sdc4, sec_mi2s, slimbus,
spdif_tx, spkr_i2s, spkr_i2s_ws, spss_geni, ter_mi2s, tsif1,
tsif2, uim, uim_batt_alarm
- 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@fd510000 {
compatible = "qcom,apq8084-pinctrl";
reg = <0xfd510000 0x4000>;
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <0 208 0>;
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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