linux/drivers/pinctrl/aspeed/Kconfig

config PINCTRL_ASPEED
	bool
	depends on (ARCH_ASPEED || COMPILE_TEST) && OF
	depends on MFD_SYSCON
	select PINMUX
	select PINCONF
	select GENERIC_PINCONF
	select REGMAP_MMIO
pinctrl: Add core support for Aspeed SoCs The Aspeed SoCs typically provide more than 200 pins for GPIO and other functions. The signal enabled on a pin is determined on a priority basis, where a given pin can provide a number of different signal types. In addition to the priority levels, the Aspeed pin controllers describe the signal active on a pin by compound logical expressions involving multiple operators, registers and bits. Some difficulty arises as a pin's function bit masks for each priority level are frequently not the same (i.e. we cannot just flip a bit to change from a high to low priority signal), or even in the same register(s). Some configuration bits affect multiple pins, while in other cases the signals for a bus must each be enabled individually. Together, these features give rise to some complexity in the implementation. A more complete description of the complexities is provided in the associated header file. The patch doesn't implement pinctrl/pinmux/pinconf for any particular Aspeed SoC, rather it adds the framework for defining pinmux configurations. Signed-off-by: Andrew Jeffery <andrew@aj.id.au> Reviewed-by: Joel Stanley <joel@jms.id.au> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> 2016-08-30 15:54:24 +08:00			`config PINCTRL_ASPEED`
			`bool`
			`depends on (ARCH_ASPEED \|\| COMPILE_TEST) && OF`
			`depends on MFD_SYSCON`
			`select PINMUX`
			`select PINCONF`
			`select GENERIC_PINCONF`
			`select REGMAP_MMIO`