1# 2# PINCTRL infrastructure and drivers 3# 4 5menu "Pin controllers" 6 7config PINCTRL 8 bool "Support pin controllers" 9 depends on DM 10 help 11 This enables the basic support for pinctrl framework. You may want 12 to enable some more options depending on what you want to do. 13 14config PINCTRL_FULL 15 bool "Support full pin controllers" 16 depends on PINCTRL && OF_CONTROL 17 default y 18 help 19 This provides Linux-compatible device tree interface for the pinctrl 20 subsystem. This feature depends on device tree configuration because 21 it parses a device tree to look for the pinctrl device which the 22 peripheral device is associated with. 23 24 If this option is disabled (it is the only possible choice for non-DT 25 boards), the pinctrl core provides no systematic mechanism for 26 identifying peripheral devices, applying needed pinctrl settings. 27 It is totally up to the implementation of each low-level driver. 28 You can save memory footprint in return for some limitations. 29 30config PINCTRL_GENERIC 31 bool "Support generic pin controllers" 32 depends on PINCTRL_FULL 33 default y 34 help 35 Say Y here if you want to use the pinctrl subsystem through the 36 generic DT interface. If enabled, some functions become available 37 to parse common properties such as "pins", "groups", "functions" and 38 some pin configuration parameters. It would be easier if you only 39 need the generic DT interface for pin muxing and pin configuration. 40 If you need to handle vendor-specific DT properties, you can disable 41 this option and implement your own set_state callback in the pinctrl 42 operations. 43 44config PINMUX 45 bool "Support pin multiplexing controllers" 46 depends on PINCTRL_GENERIC 47 default y 48 help 49 This option enables pin multiplexing through the generic pinctrl 50 framework. Most SoCs have their own own multiplexing arrangement 51 where a single pin can be used for several functions. An SoC pinctrl 52 driver allows the required function to be selected for each pin. 53 The driver is typically controlled by the device tree. 54 55config PINCONF 56 bool "Support pin configuration controllers" 57 depends on PINCTRL_GENERIC 58 help 59 This option enables pin configuration through the generic pinctrl 60 framework. 61 62config SPL_PINCTRL 63 bool "Support pin controlloers in SPL" 64 depends on SPL && SPL_DM 65 help 66 This option is an SPL-variant of the PINCTRL option. 67 See the help of PINCTRL for details. 68 69config SPL_PINCTRL_FULL 70 bool "Support full pin controllers in SPL" 71 depends on SPL_PINCTRL && SPL_OF_CONTROL 72 default y 73 help 74 This option is an SPL-variant of the PINCTRL_FULL option. 75 See the help of PINCTRL_FULL for details. 76 77config SPL_PINCTRL_GENERIC 78 bool "Support generic pin controllers in SPL" 79 depends on SPL_PINCTRL_FULL 80 default y 81 help 82 This option is an SPL-variant of the PINCTRL_GENERIC option. 83 See the help of PINCTRL_GENERIC for details. 84 85config SPL_PINMUX 86 bool "Support pin multiplexing controllers in SPL" 87 depends on SPL_PINCTRL_GENERIC 88 default y 89 help 90 This option is an SPL-variant of the PINMUX option. 91 See the help of PINMUX for details. 92 The pinctrl subsystem can add a substantial overhead to the SPL 93 image since it typically requires quite a few tables either in the 94 driver or in the device tree. If this is acceptable and you need 95 to adjust pin multiplexing in SPL in order to boot into U-Boot, 96 enable this option. You will need to enable device tree in SPL 97 for this to work. 98 99config SPL_PINCONF 100 bool "Support pin configuration controllers in SPL" 101 depends on SPL_PINCTRL_GENERIC 102 help 103 This option is an SPL-variant of the PINCONF option. 104 See the help of PINCONF for details. 105 106if PINCTRL || SPL_PINCTRL 107 108config ROCKCHIP_PINCTRL 109 bool "Rockchip pin control driver" 110 depends on DM 111 help 112 Support pin multiplexing control on Rockchip SoCs. The driver is 113 controlled by a device tree node which contains both the GPIO 114 definitions and pin control functions for each available multiplex 115 function. 116 117config ROCKCHIP_3036_PINCTRL 118 bool "Rockchip rk3036 pin control driver" 119 depends on DM 120 help 121 Support pin multiplexing control on Rockchip rk3036 SoCs. The driver is 122 controlled by a device tree node which contains both the GPIO 123 definitions and pin control functions for each available multiplex 124 function. 125 126config PINCTRL_SANDBOX 127 bool "Sandbox pinctrl driver" 128 depends on SANDBOX 129 help 130 This enables pinctrl driver for sandbox. Currently, this driver 131 actually does nothing but print debug messages when pinctrl 132 operations are invoked. 133 134config PIC32_PINCTRL 135 bool "Microchip PIC32 pin-control and pin-mux driver" 136 depends on DM && MACH_PIC32 137 default y 138 help 139 Supports individual pin selection and configuration for each remappable 140 peripheral available on Microchip PIC32 SoCs. This driver is controlled 141 by a device tree node which contains both GPIO defintion and pin control 142 functions. 143 144endif 145 146source "drivers/pinctrl/uniphier/Kconfig" 147 148endmenu 149