2 * (C) Copyright 2010-2014
3 * NVIDIA Corporation <www.nvidia.com>
5 * SPDX-License-Identifier: GPL-2.0+
8 #ifndef _TEGRA_PINMUX_H_
9 #define _TEGRA_PINMUX_H_
11 #include <asm/arch/tegra.h>
13 /* The pullup/pulldown state of a pin group */
20 /* Defines whether a pin group is tristated or in normal operation */
23 PMUX_TRI_TRISTATE = 1,
26 #ifdef TEGRA_PMX_HAS_PIN_IO_BIT_ETC
34 PMUX_PIN_LOCK_DEFAULT = 0,
35 PMUX_PIN_LOCK_DISABLE,
40 PMUX_PIN_OD_DEFAULT = 0,
45 enum pmux_pin_ioreset {
46 PMUX_PIN_IO_RESET_DEFAULT = 0,
47 PMUX_PIN_IO_RESET_DISABLE,
48 PMUX_PIN_IO_RESET_ENABLE,
51 #ifdef TEGRA_PMX_HAS_RCV_SEL
52 enum pmux_pin_rcv_sel {
53 PMUX_PIN_RCV_SEL_DEFAULT = 0,
54 PMUX_PIN_RCV_SEL_NORMAL,
55 PMUX_PIN_RCV_SEL_HIGH,
57 #endif /* TEGRA_PMX_HAS_RCV_SEL */
58 #endif /* TEGRA_PMX_HAS_PIN_IO_BIT_ETC */
61 * This defines the configuration for a pin, including the function assigned,
62 * pull up/down settings and tristate settings. Having set up one of these
63 * you can call pinmux_config_pingroup() to configure a pin in one step. Also
64 * available is pinmux_config_table() to configure a list of pins.
66 struct pmux_pingrp_config {
67 u32 pingrp:16; /* pin group PMUX_PINGRP_... */
68 u32 func:8; /* function to assign PMUX_FUNC_... */
69 u32 pull:2; /* pull up/down/normal PMUX_PULL_...*/
70 u32 tristate:2; /* tristate or normal PMUX_TRI_... */
71 #ifdef TEGRA_PMX_HAS_PIN_IO_BIT_ETC
72 u32 io:2; /* input or output PMUX_PIN_... */
73 u32 lock:2; /* lock enable/disable PMUX_PIN... */
74 u32 od:2; /* open-drain or push-pull driver */
75 u32 ioreset:2; /* input/output reset PMUX_PIN... */
76 #ifdef TEGRA_PMX_HAS_RCV_SEL
77 u32 rcv_sel:2; /* select between High and Normal */
78 /* VIL/VIH receivers */
83 #if !defined(CONFIG_TEGRA20) && !defined(CONFIG_TEGRA30)
84 /* Set the pinmux CLAMP_INPUTS_WHEN_TRISTATED bit */
85 void pinmux_set_tristate_input_clamping(void);
88 /* Set the mux function for a pin group */
89 void pinmux_set_func(enum pmux_pingrp pin, enum pmux_func func);
91 /* Set the pull up/down feature for a pin group */
92 void pinmux_set_pullupdown(enum pmux_pingrp pin, enum pmux_pull pupd);
94 /* Set a pin group to tristate */
95 void pinmux_tristate_enable(enum pmux_pingrp pin);
97 /* Set a pin group to normal (non tristate) */
98 void pinmux_tristate_disable(enum pmux_pingrp pin);
100 #ifdef TEGRA_PMX_HAS_PIN_IO_BIT_ETC
101 /* Set a pin group as input or output */
102 void pinmux_set_io(enum pmux_pingrp pin, enum pmux_pin_io io);
106 * Configure a list of pin groups
108 * @param config List of config items
109 * @param len Number of config items in list
111 void pinmux_config_pingrp_table(const struct pmux_pingrp_config *config,
114 #ifdef TEGRA_PMX_HAS_DRVGRPS
116 #define PMUX_SLWF_MIN 0
117 #define PMUX_SLWF_MAX 3
118 #define PMUX_SLWF_NONE -1
120 #define PMUX_SLWR_MIN 0
121 #define PMUX_SLWR_MAX 3
122 #define PMUX_SLWR_NONE -1
124 #define PMUX_DRVUP_MIN 0
125 #define PMUX_DRVUP_MAX 127
126 #define PMUX_DRVUP_NONE -1
128 #define PMUX_DRVDN_MIN 0
129 #define PMUX_DRVDN_MAX 127
130 #define PMUX_DRVDN_NONE -1
132 /* Defines a pin group cfg's low-power mode select */
141 /* Defines whether a pin group cfg's schmidt is enabled or not */
143 PMUX_SCHMT_DISABLE = 0,
144 PMUX_SCHMT_ENABLE = 1,
145 PMUX_SCHMT_NONE = -1,
148 /* Defines whether a pin group cfg's high-speed mode is enabled or not */
150 PMUX_HSM_DISABLE = 0,
156 * This defines the configuration for a pin group's pad control config
158 struct pmux_drvgrp_config {
159 u32 drvgrp:16; /* pin group PMUX_DRVGRP_x */
160 u32 slwf:3; /* falling edge slew */
161 u32 slwr:3; /* rising edge slew */
162 u32 drvup:8; /* pull-up drive strength */
163 u32 drvdn:8; /* pull-down drive strength */
164 u32 lpmd:3; /* low-power mode selection */
165 u32 schmt:2; /* schmidt enable */
166 u32 hsm:2; /* high-speed mode enable */
170 * Set the GP pad configs
172 * @param config List of config items
173 * @param len Number of config items in list
175 void pinmux_config_drvgrp_table(const struct pmux_drvgrp_config *config,
178 #endif /* TEGRA_PMX_HAS_DRVGRPS */
180 struct pmux_pingrp_desc {
182 #if defined(CONFIG_TEGRA20)
185 #endif /* CONFIG_TEGRA20 */
188 extern const struct pmux_pingrp_desc *tegra_soc_pingroups;
190 #endif /* _TEGRA_PINMUX_H_ */