1 NVIDIA Tegra194 pinmux controller
4 - compatible: "nvidia,tegra194-pinmux"
5 - reg: Should contain a list of base address and size pairs for:
6 - first entry: The APB_MISC_GP_*_PADCTRL registers (pad control)
7 - second entry: The PINMUX_AUX_* registers (pinmux)
9 Please refer to pinctrl-bindings.txt in this directory for details of the
10 common pinctrl bindings used by client devices, including the meaning of the
11 phrase "pin configuration node".
13 Tegra's pin configuration nodes act as a container for an arbitrary number of
14 subnodes. Each of these subnodes represents some desired configuration for a
15 pin, a group, or a list of pins or groups. This configuration can include the
16 mux function to select on those pin(s)/group(s), and various pin configuration
17 parameters, such as pull-up, tristate, drive strength, etc.
19 See the TRM to determine which properties and values apply to each pin/group.
20 Macro values for property values are defined in
21 include/dt-binding/pinctrl/pinctrl-tegra.h.
23 Required subnode-properties:
24 - nvidia,pins : An array of strings. Each string contains the name of a pin or
25 group. Valid values for these names are listed below.
27 Optional subnode-properties:
28 - nvidia,function: A string containing the name of the function to mux to the
30 - nvidia,pull: Integer, representing the pull-down/up to apply to the pin.
31 0: none, 1: down, 2: up.
32 - nvidia,tristate: Integer.
33 0: drive, 1: tristate.
34 - nvidia,enable-input: Integer. Enable the pin's input path.
35 enable :TEGRA_PIN_ENABLE and
36 disable or output only: TEGRA_PIN_DISABLE.
37 - nvidia,open-drain: Integer.
38 enable: TEGRA_PIN_ENABLE.
39 disable: TEGRA_PIN_DISABLE.
40 - nvidia,lock: Integer. Lock the pin configuration against further changes
42 enable: TEGRA_PIN_ENABLE.
43 disable: TEGRA_PIN_DISABLE.
44 - nvidia,io-hv: Integer. Select high-voltage receivers.
45 normal: TEGRA_PIN_DISABLE
46 high: TEGRA_PIN_ENABLE
47 - nvidia,schmitt: Integer. Enables Schmitt Trigger on the input.
48 normal: TEGRA_PIN_DISABLE
49 high: TEGRA_PIN_ENABLE
50 - nvidia,drive-type: Integer. Valid range 0...3.
51 - nvidia,pull-down-strength: Integer. Controls drive strength. 0 is weakest.
52 The range of valid values depends on the pingroup. See "CAL_DRVDN" in the
54 - nvidia,pull-up-strength: Integer. Controls drive strength. 0 is weakest.
55 The range of valid values depends on the pingroup. See "CAL_DRVUP" in the
58 Valid values for pin and group names (nvidia,pin) are:
60 These correspond to Tegra PADCTL_* (pinmux) registers.
64 These correspond to Tegra PADCTL_* (pinmux) registers. Any property
65 that exists in those registers may be set for the following pin names.
67 pex_l5_clkreq_n_pgg0, pex_l5_rst_n_pgg1
71 These registers controls a single pin for which a mux group exists.
72 See the list above for the pin name to use when configuring the pinmux.
74 pex_l5_clkreq_n_pgg0, pex_l5_rst_n_pgg1
76 Valid values for nvidia,functions are:
81 pex_l5_clkreq_n_pgg0 and pex_l5_rst_n_pgg1 are part of PCIE C5 power
82 partition. Client devices must enable this partition before accessing
88 tegra_pinctrl: pinmux: pinmux@2430000 {
89 compatible = "nvidia,tegra194-pinmux";
90 reg = <0x2430000 0x17000
93 pinctrl-names = "pex_rst";
94 pinctrl-0 = <&pex_rst_c5_out_state>;
96 pex_rst_c5_out_state: pex_rst_c5_out {
98 nvidia,pins = "pex_l5_rst_n_pgg1";
99 nvidia,schmitt = <TEGRA_PIN_DISABLE>;
100 nvidia,lpdr = <TEGRA_PIN_ENABLE>;
101 nvidia,enable-input = <TEGRA_PIN_DISABLE>;
102 nvidia,io-hv = <TEGRA_PIN_ENABLE>;
103 nvidia,tristate = <TEGRA_PIN_DISABLE>;
104 nvidia,pull = <TEGRA_PIN_PULL_NONE>;