Qualcomm MSM8960 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,msm8960-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-gpio151,
sdc1_clk,
sdc1_cmd,
sdc1_data
sdc3_clk,
sdc3_cmd,
sdc3_data
- function:
Usage: optional
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:
audio_pcm, bt, cam_mclk0, cam_mclk1, cam_mclk2,
codec_mic_i2s, codec_spkr_i2s, ext_gps, fm, gps_blanking,
gps_pps_in, gps_pps_out, gp_clk_0a, gp_clk_0b, gp_clk_1a,
gp_clk_1b, gp_clk_2a, gp_clk_2b, gp_mn, gp_pdm_0a,
gp_pdm_0b, gp_pdm_1a, gp_pdm_1b, gp_pdm_2a, gp_pdm_2b,
gsbi1, gsbi1_spi_cs1_n, gsbi1_spi_cs2a_n, gsbi1_spi_cs2b_n,
gsbi1_spi_cs3_n, gsbi2, gsbi2_spi_cs1_n, gsbi2_spi_cs2_n,
gsbi2_spi_cs3_n, gsbi3, gsbi4, gsbi4_3d_cam_i2c_l,
gsbi4_3d_cam_i2c_r, gsbi5, gsbi5_3d_cam_i2c_l,
gsbi5_3d_cam_i2c_r, gsbi6, gsbi7, gsbi8, gsbi9, gsbi10,
gsbi11, gsbi11_spi_cs1a_n, gsbi11_spi_cs1b_n,
gsbi11_spi_cs2a_n, gsbi11_spi_cs2b_n, gsbi11_spi_cs3_n,
gsbi12, hdmi_cec, hdmi_ddc_clock, hdmi_ddc_data,
hdmi_hot_plug_detect, hsic, mdp_vsync, mi2s, mic_i2s,
pmb_clk, pmb_ext_ctrl, ps_hold, rpm_wdog, sdc2, sdc4, sdc5,
slimbus1, slimbus2, spkr_i2s, ssbi1, ssbi2, ssbi_ext_gps,
ssbi_pmic2, ssbi_qpa1, ssbi_ts, tsif1, tsif2, ts_eoc,
usb_fs1, usb_fs1_oe, usb_fs1_oe_n, usb_fs2, usb_fs2_oe,
usb_fs2_oe_n, vfe_camif_timer1_a, vfe_camif_timer1_b,
vfe_camif_timer2, vfe_camif_timer3_a, vfe_camif_timer3_b,
vfe_camif_timer4_a, vfe_camif_timer4_b, vfe_camif_timer4_c,
vfe_camif_timer5_a, vfe_camif_timer5_b, vfe_camif_timer6_a,
vfe_camif_timer6_b, vfe_camif_timer6_c, vfe_camif_timer7_a,
vfe_camif_timer7_b, vfe_camif_timer7_c, wlan
- 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:
msmgpio: pinctrl@800000 {
compatible = "qcom,msm8960-pinctrl";
reg = <0x800000 0x4000>;
gpio-controller;
#gpio-cells = <2>;
interrupt-controller;
#interrupt-cells = <2>;
interrupts = <0 16 0x4>;
gsbi8_uart: gsbi8-uart {
mux {
pins = "gpio34", "gpio35";
function = "gsbi8";
};
tx {
pins = "gpio34";
drive-strength = <4>;
bias-disable;
};
rx {
pins = "gpio35";
drive-strength = <2>;
bias-pull-up;
};
};
};
