1Qualcomm APQ8084 TLMM block
2
3This binding describes the Top Level Mode Multiplexer block found in the
4MSM8960 platform.
5
6- compatible:
7	Usage: required
8	Value type: <string>
9	Definition: must be "qcom,apq8084-pinctrl"
10
11- reg:
12	Usage: required
13	Value type: <prop-encoded-array>
14	Definition: the base address and size of the TLMM register space.
15
16- interrupts:
17	Usage: required
18	Value type: <prop-encoded-array>
19	Definition: should specify the TLMM summary IRQ.
20
21- interrupt-controller:
22	Usage: required
23	Value type: <none>
24	Definition: identifies this node as an interrupt controller
25
26- #interrupt-cells:
27	Usage: required
28	Value type: <u32>
29	Definition: must be 2. Specifying the pin number and flags, as defined
30		    in <dt-bindings/interrupt-controller/irq.h>
31
32- gpio-controller:
33	Usage: required
34	Value type: <none>
35	Definition: identifies this node as a gpio controller
36
37- #gpio-cells:
38	Usage: required
39	Value type: <u32>
40	Definition: must be 2. Specifying the pin number and flags, as defined
41		    in <dt-bindings/gpio/gpio.h>
42
43- gpio-ranges:
44	Usage: required
45	Definition:  see ../gpio/gpio.txt
46
47- gpio-reserved-ranges:
48	Usage: optional
49	Definition: see ../gpio/gpio.txt
50
51Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
52a general description of GPIO and interrupt bindings.
53
54Please refer to pinctrl-bindings.txt in this directory for details of the
55common pinctrl bindings used by client devices, including the meaning of the
56phrase "pin configuration node".
57
58The pin configuration nodes act as a container for an arbitrary number of
59subnodes. Each of these subnodes represents some desired configuration for a
60pin, a group, or a list of pins or groups. This configuration can include the
61mux function to select on those pin(s)/group(s), and various pin configuration
62parameters, such as pull-up, drive strength, etc.
63
64
65PIN CONFIGURATION NODES:
66
67The name of each subnode is not important; all subnodes should be enumerated
68and processed purely based on their content.
69
70Each subnode only affects those parameters that are explicitly listed. In
71other words, a subnode that lists a mux function but no pin configuration
72parameters implies no information about any pin configuration parameters.
73Similarly, a pin subnode that describes a pullup parameter implies no
74information about e.g. the mux function.
75
76
77The following generic properties as defined in pinctrl-bindings.txt are valid
78to specify in a pin configuration subnode:
79
80- pins:
81	Usage: required
82	Value type: <string-array>
83	Definition: List of gpio pins affected by the properties specified in
84		    this subnode.  Valid pins are:
85		    gpio0-gpio146,
86		    sdc1_clk,
87		    sdc1_cmd,
88		    sdc1_data
89		    sdc2_clk,
90		    sdc2_cmd,
91		    sdc2_data
92
93- function:
94	Usage: required
95	Value type: <string>
96	Definition: Specify the alternative function to be configured for the
97		    specified pins. Functions are only valid for gpio pins.
98		    Valid values are:
99		    adsp_ext, audio_ref, blsp_i2c1, blsp_i2c2, blsp_i2c3,
100		    blsp_i2c4, blsp_i2c5, blsp_i2c6, blsp_i2c7, blsp_i2c8,
101		    blsp_i2c9, blsp_i2c10, blsp_i2c11, blsp_i2c12,
102		    blsp_spi1, blsp_spi2, blsp_spi3, blsp_spi4, blsp_spi5,
103		    blsp_spi6, blsp_spi7, blsp_spi8, blsp_spi9, blsp_spi10,
104		    blsp_spi11, blsp_spi12, blsp_uart1, blsp_uart2, blsp_uart3,
105		    blsp_uart4, blsp_uart5, blsp_uart6, blsp_uart7, blsp_uart8,
106		    blsp_uart9, blsp_uart10, blsp_uart11, blsp_uart12,
107		    blsp_uim1, blsp_uim2, blsp_uim3, blsp_uim4, blsp_uim5,
108		    blsp_uim6, blsp_uim7, blsp_uim8, blsp_uim9, blsp_uim10,
109		    blsp_uim11, blsp_uim12, cam_mclk0, cam_mclk1, cam_mclk2,
110		    cam_mclk3, cci_async, cci_async_in0, cci_i2c0, cci_i2c1,
111		    cci_timer0, cci_timer1, cci_timer2, cci_timer3, cci_timer4,
112		    edp_hpd, gcc_gp1, gcc_gp2, gcc_gp3, gcc_obt, gcc_vtt,i
113		    gp_mn, gp_pdm0, gp_pdm1, gp_pdm2, gp0_clk, gp1_clk, gpio,
114		    hdmi_cec, hdmi_ddc, hdmi_dtest, hdmi_hpd, hdmi_rcv, hsic,
115		    ldo_en, ldo_update, mdp_vsync, pci_e0, pci_e0_n, pci_e0_rst,
116		    pci_e1, pci_e1_rst, pci_e1_rst_n, pci_e1_clkreq_n, pri_mi2s,
117		    qua_mi2s, sata_act, sata_devsleep, sata_devsleep_n,
118		    sd_write, sdc_emmc_mode, sdc3, sdc4, sec_mi2s, slimbus,
119		    spdif_tx, spkr_i2s, spkr_i2s_ws, spss_geni, ter_mi2s, tsif1,
120		    tsif2, uim, uim_batt_alarm
121
122- bias-disable:
123	Usage: optional
124	Value type: <none>
125	Definition: The specified pins should be configued as no pull.
126
127- bias-pull-down:
128	Usage: optional
129	Value type: <none>
130	Definition: The specified pins should be configued as pull down.
131
132- bias-pull-up:
133	Usage: optional
134	Value type: <none>
135	Definition: The specified pins should be configued as pull up.
136
137- output-high:
138	Usage: optional
139	Value type: <none>
140	Definition: The specified pins are configured in output mode, driven
141		    high.
142		    Not valid for sdc pins.
143
144- output-low:
145	Usage: optional
146	Value type: <none>
147	Definition: The specified pins are configured in output mode, driven
148		    low.
149		    Not valid for sdc pins.
150
151- drive-strength:
152	Usage: optional
153	Value type: <u32>
154	Definition: Selects the drive strength for the specified pins, in mA.
155		    Valid values are: 2, 4, 6, 8, 10, 12, 14 and 16
156
157Example:
158
159	tlmm: pinctrl@fd510000 {
160		compatible = "qcom,apq8084-pinctrl";
161		reg = <0xfd510000 0x4000>;
162
163		gpio-controller;
164		#gpio-cells = <2>;
165		gpio-ranges = <&tlmm 0 0 147>;
166		interrupt-controller;
167		#interrupt-cells = <2>;
168		interrupts = <0 208 0>;
169
170		uart2: uart2-default {
171			mux {
172				pins = "gpio4", "gpio5";
173				function = "blsp_uart2";
174			};
175
176			tx {
177				pins = "gpio4";
178				drive-strength = <4>;
179				bias-disable;
180			};
181
182			rx {
183				pins = "gpio5";
184				drive-strength = <2>;
185				bias-pull-up;
186			};
187		};
188	};
189