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u-boot/drivers/pinctrl/Kconfig
Heiko Schocher 5990b05951 powerpc, qe: add DTS support for parallel I/O ports 
add DM support for parallel I/O ports on QUICC Engine Block

Signed-off-by: Heiko Schocher <hs@denx.de>
Patch-cc: Mario Six <mario.six@gdsys.cc>
Patch-cc: Qiang Zhao <qiang.zhao@nxp.com>
Patch-cc: Holger Brunck <holger.brunck@hitachi-powergrids.com>

Series-changes: 2
- remove RFC
- fixed Codingstyle errors, therefore new patch
  powerpc, mpc83xx: fix codingstyle issues for qe_io.c
- moved DM part to drivers/pinctrl

Commit-notes:
Open questions / discussion:

- I let the old none DM based implementation in code
  so boards should work with old implementation.

  This should be removed if all boards are converted to
  DM/DTS.

- Unfortunately linux DTS does not use "pinctrl-"
  properties, instead "pio-handle" properties.

  Even worser old U-Boot code initializes all pins
  defined in "const qe_iop_conf_t qe_iop_conf_tab[]"
  table in board code. As linux does the same I decided
  to also scan through all subnodes containing "pio-map"
  property and initialize them too.

  The proper solution would be to check for "pio-handle"
  when a device is probed.

END
2020-09-17 06:09:53 +02:00

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#
# PINCTRL infrastructure and drivers
#
menu "Pin controllers"
config PINCTRL
bool "Support pin controllers"
depends on DM
help
This enables the basic support for pinctrl framework. You may want
to enable some more options depending on what you want to do.
config PINCTRL_FULL
bool "Support full pin controllers"
depends on PINCTRL && OF_CONTROL
default y
help
This provides Linux-compatible device tree interface for the pinctrl
subsystem. This feature depends on device tree configuration because
it parses a device tree to look for the pinctrl device which the
peripheral device is associated with.
If this option is disabled (it is the only possible choice for non-DT
boards), the pinctrl core provides no systematic mechanism for
identifying peripheral devices, applying needed pinctrl settings.
It is totally up to the implementation of each low-level driver.
You can save memory footprint in return for some limitations.
config PINCTRL_GENERIC
bool "Support generic pin controllers"
depends on PINCTRL_FULL
default y
help
Say Y here if you want to use the pinctrl subsystem through the
generic DT interface. If enabled, some functions become available
to parse common properties such as "pins", "groups", "functions" and
some pin configuration parameters. It would be easier if you only
need the generic DT interface for pin muxing and pin configuration.
If you need to handle vendor-specific DT properties, you can disable
this option and implement your own set_state callback in the pinctrl
operations.
config PINMUX
bool "Support pin multiplexing controllers"
depends on PINCTRL_GENERIC
default y
help
This option enables pin multiplexing through the generic pinctrl
framework. Most SoCs have their own multiplexing arrangement where
a single pin can be used for several functions. An SoC pinctrl driver
allows the required function to be selected for each pin.
The driver is typically controlled by the device tree.
config PINCONF
bool "Support pin configuration controllers"
depends on PINCTRL_GENERIC
help
This option enables pin configuration through the generic pinctrl
framework.
config PINCONF_RECURSIVE
bool "Support recursive binding for pin configuration nodes"
depends on PINCTRL_FULL
default n if ARCH_STM32MP
default y
help
In the Linux pinctrl binding, the pin configuration nodes need not be
direct children of the pin controller device (may be grandchildren for
example). It is define is each individual pin controller device.
Say Y here if you want to keep this behavior with the pinconfig
u-class: all sub are recursivelly bounded.
If the option is disabled, this behavior is deactivated and only
the direct children of pin controller will be assumed as pin
configuration; you can save memory footprint when this feature is
no needed.
config SPL_PINCTRL
bool "Support pin controllers in SPL"
depends on SPL && SPL_DM
help
This option is an SPL-variant of the PINCTRL option.
See the help of PINCTRL for details.
config TPL_PINCTRL
bool "Support pin controllers in TPL"
depends on TPL && TPL_DM
help
This option is an TPL variant of the PINCTRL option.
See the help of PINCTRL for details.
config SPL_PINCTRL_FULL
bool "Support full pin controllers in SPL"
depends on SPL_PINCTRL && SPL_OF_CONTROL
default n if TARGET_STM32F746_DISCO
default y
help
This option is an SPL-variant of the PINCTRL_FULL option.
See the help of PINCTRL_FULL for details.
config TPL_PINCTRL_FULL
bool "Support full pin controllers in TPL"
depends on TPL_PINCTRL && TPL_OF_CONTROL
help
This option is an TPL-variant of the PINCTRL_FULL option.
See the help of PINCTRL_FULL for details.
config SPL_PINCTRL_GENERIC
bool "Support generic pin controllers in SPL"
depends on SPL_PINCTRL_FULL
default y
help
This option is an SPL-variant of the PINCTRL_GENERIC option.
See the help of PINCTRL_GENERIC for details.
config SPL_PINMUX
bool "Support pin multiplexing controllers in SPL"
depends on SPL_PINCTRL_GENERIC
default y
help
This option is an SPL-variant of the PINMUX option.
See the help of PINMUX for details.
The pinctrl subsystem can add a substantial overhead to the SPL
image since it typically requires quite a few tables either in the
driver or in the device tree. If this is acceptable and you need
to adjust pin multiplexing in SPL in order to boot into U-Boot,
enable this option. You will need to enable device tree in SPL
for this to work.
config SPL_PINCONF
bool "Support pin configuration controllers in SPL"
depends on SPL_PINCTRL_GENERIC
help
This option is an SPL-variant of the PINCONF option.
See the help of PINCONF for details.
config SPL_PINCONF_RECURSIVE
bool "Support recursive binding for pin configuration nodes in SPL"
depends on SPL_PINCTRL_FULL
default n if ARCH_STM32MP
default y
help
This option is an SPL-variant of the PINCONF_RECURSIVE option.
See the help of PINCONF_RECURSIVE for details.
if PINCTRL || SPL_PINCTRL
config PINCTRL_AR933X
bool "QCA/Athores ar933x pin control driver"
depends on DM && SOC_AR933X
help
Support pin multiplexing control on QCA/Athores ar933x SoCs.
The driver is controlled by a device tree node which contains
both the GPIO definitions and pin control functions for each
available multiplex function.
config PINCTRL_AT91
bool "AT91 pinctrl driver"
depends on DM
help
This option is to enable the AT91 pinctrl driver for AT91 PIO
controller.
AT91 PIO controller is a combined gpio-controller, pin-mux and
pin-config module. Each I/O pin may be dedicated as a general-purpose
I/O or be assigned to a function of an embedded peripheral. Each I/O
pin has a glitch filter providing rejection of glitches lower than
one-half of peripheral clock cycle and a debouncing filter providing
rejection of unwanted pulses from key or push button operations. You
can also control the multi-driver capability, pull-up and pull-down
feature on each I/O pin.
config PINCTRL_AT91PIO4
bool "AT91 PIO4 pinctrl driver"
depends on DM
help
This option is to enable the AT91 pinctrl driver for AT91 PIO4
controller which is available on SAMA5D2 SoC.
config PINCTRL_INTEL
bool "Standard Intel pin-control and pin-mux driver"
help
Recent Intel chips such as Apollo Lake (APL) use a common pin control
and GPIO scheme. The settings for this come from an SoC-specific
driver which must be separately enabled. The driver supports setting
pins on start-up and changing the GPIO attributes.
config PINCTRL_PIC32
bool "Microchip PIC32 pin-control and pin-mux driver"
depends on DM && MACH_PIC32
default y
help
Supports individual pin selection and configuration for each
remappable peripheral available on Microchip PIC32
SoCs. This driver is controlled by a device tree node which
contains both GPIO definition and pin control functions.
config PINCTRL_QCA953X
bool "QCA/Athores qca953x pin control driver"
depends on DM && SOC_QCA953X
help
Support pin multiplexing control on QCA/Athores qca953x SoCs.
The driver is controlled by a device tree node which contains both
the GPIO definitions and pin control functions for each available
multiplex function.
config PINCTRL_QE
bool "QE based pinctrl driver, like on mpc83xx"
depends on DM
help
This option is to enable the QE pinctrl driver for QE based io
controller.
config PINCTRL_ROCKCHIP_RV1108
bool "Rockchip rv1108 pin control driver"
depends on DM
help
Support pin multiplexing control on Rockchip rv1108 SoC.
The driver is controlled by a device tree node which contains
both the GPIO definitions and pin control functions for each
available multiplex function.
config PINCTRL_SANDBOX
bool "Sandbox pinctrl driver"
depends on SANDBOX
help
This enables pinctrl driver for sandbox.
Currently, this driver actually does nothing but print debug
messages when pinctrl operations are invoked.
config PINCTRL_SINGLE
bool "Single register pin-control and pin-multiplex driver"
depends on DM
help
This enables pinctrl driver for systems using a single register for
pin configuration and multiplexing. TI's AM335X SoCs are examples of
such systems.
Depending on the platform make sure to also enable OF_TRANSLATE and
eventually SPL_OF_TRANSLATE to get correct address translations.
config PINCTRL_STI
bool "STMicroelectronics STi pin-control and pin-mux driver"
depends on DM && ARCH_STI
default y
help
Support pin multiplexing control on STMicrolectronics STi SoCs.
The driver is controlled by a device tree node which contains both
the GPIO definitions and pin control functions for each available
multiplex function.
config PINCTRL_STM32
bool "ST STM32 pin control driver"
depends on DM
help
Supports pin multiplexing control on stm32 SoCs.
The driver is controlled by a device tree node which contains both
the GPIO definitions and pin control functions for each available
multiplex function.
config PINCTRL_STMFX
bool "STMicroelectronics STMFX I2C GPIO expander pinctrl driver"
depends on DM && PINCTRL_FULL
help
I2C driver for STMicroelectronics Multi-Function eXpander (STMFX)
GPIO expander.
Supports pin multiplexing control on stm32 SoCs.
The driver is controlled by a device tree node which contains both
the GPIO definitions and pin control functions for each available
multiplex function.
config SPL_PINCTRL_STMFX
bool "STMicroelectronics STMFX I2C GPIO expander pinctrl driver in SPL"
depends on SPL_PINCTRL_FULL
help
This option is an SPL-variant of the SPL_PINCTRL_STMFX option.
See the help of PINCTRL_STMFX for details.
config ASPEED_AST2500_PINCTRL
bool "Aspeed AST2500 pin control driver"
depends on DM && PINCTRL_GENERIC && ASPEED_AST2500
default y
help
Support pin multiplexing control on Aspeed ast2500 SoC. The driver
uses Generic Pinctrl framework and is compatible with the Linux
driver, i.e. it uses the same device tree configuration.
endif
source "drivers/pinctrl/broadcom/Kconfig"
source "drivers/pinctrl/exynos/Kconfig"
source "drivers/pinctrl/intel/Kconfig"
source "drivers/pinctrl/mediatek/Kconfig"
source "drivers/pinctrl/meson/Kconfig"
source "drivers/pinctrl/mscc/Kconfig"
source "drivers/pinctrl/mtmips/Kconfig"
source "drivers/pinctrl/mvebu/Kconfig"
source "drivers/pinctrl/nexell/Kconfig"
source "drivers/pinctrl/nxp/Kconfig"
source "drivers/pinctrl/renesas/Kconfig"
source "drivers/pinctrl/rockchip/Kconfig"
source "drivers/pinctrl/uniphier/Kconfig"
endmenu
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