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pinctrl: Add Intel Thunder Bay pinctrl driver

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About Intel Thunder Bay:
-----------------------
Intel Thunder Bay is a computer vision AI accelerator SoC based on ARM CPU.

Pinctrl IP:
----------
The SoC has a customised pinmux controller IP which controls pin
multiplexing and configuration.

Thunder Bay pinctrl IP is not based on and have nothing in common with the
existing pinctrl drivers. The registers used are incompatible with the
existing drivers, so it requires a new driver.

Add pinctrl driver to enable pin control support in the Intel Thunder Bay
SoC.

Co-developed-by: Kiran Kumar S <kiran.kumar1.s@intel.com>
Signed-off-by: Kiran Kumar S <kiran.kumar1.s@intel.com>
Signed-off-by: Lakshmi Sowjanya D <lakshmi.sowjanya.d@intel.com>
Link: https://lore.kernel.org/r/20211201072626.19599-3-lakshmi.sowjanya.d@intel.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Lakshmi Sowjanya D 2021-12-01 12:56:26 +05:30 committed by Linus Walleij
parent bd92baaa26
commit 12422af819
3 changed files with 1342 additions and 0 deletions
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19
drivers/pinctrl/Kconfig
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@ -499,4 +499,23 @@ config PINCTRL_EQUILIBRIUM
pin functions, configure GPIO attributes for LGM SoC pins. Pinmux and
pinconf settings are retrieved from device tree.
config PINCTRL_THUNDERBAY
tristate "Generic pinctrl and GPIO driver for Intel Thunder Bay SoC"
depends on ARCH_THUNDERBAY || (ARM64 && COMPILE_TEST)
depends on HAS_IOMEM
select PINMUX
select PINCONF
select GENERIC_PINCONF
select GENERIC_PINCTRL_GROUPS
select GENERIC_PINMUX_FUNCTIONS
select GPIOLIB
select GPIOLIB_IRQCHIP
select GPIO_GENERIC
help
This selects pin control driver for the Intel Thunder Bay SoC.
It provides pin config functions such as pullup, pulldown,
interrupt, drive strength, sec lock, schmitt trigger, slew
rate control and direction control. This module will be
called as pinctrl-thunderbay.
endif

1
drivers/pinctrl/Makefile
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@ -49,6 +49,7 @@ obj-$(CONFIG_PINCTRL_MICROCHIP_SGPIO) += pinctrl-microchip-sgpio.o
obj-$(CONFIG_PINCTRL_EQUILIBRIUM) += pinctrl-equilibrium.o
obj-$(CONFIG_PINCTRL_K210) += pinctrl-k210.o
obj-$(CONFIG_PINCTRL_KEEMBAY) += pinctrl-keembay.o
obj-$(CONFIG_PINCTRL_THUNDERBAY) += pinctrl-thunderbay.o
obj-y += actions/
obj-$(CONFIG_ARCH_ASPEED) += aspeed/

1322
drivers/pinctrl/pinctrl-thunderbay.c Normal file
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