1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
|
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>
- gpio-ranges:
Usage: required
Definition: see ../gpio/gpio.txt
- gpio-reserved-ranges:
Usage: optional
Definition: see ../gpio/gpio.txt
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-gpio151,
sdc1_clk,
sdc1_cmd,
sdc1_data
sdc3_clk,
sdc3_cmd,
sdc3_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:
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, gpio,
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 configured as no pull.
- bias-pull-down:
Usage: optional
Value type: <none>
Definition: The specified pins should be configured as pull down.
- bias-pull-up:
Usage: optional
Value type: <none>
Definition: The specified pins should be configured 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>;
gpio-ranges = <&msmgpio 0 0 152>;
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;
};
};
};
|
