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authorAndrew Jeffery <andrew@aj.id.au>2016-08-30 17:24:24 +0930
committerLinus Walleij <linus.walleij@linaro.org>2016-09-07 16:48:22 +0200
commit4d3d0e4272d8d660f5f14f5abcf96fb4df1aa94b (patch)
treea4722451117ba7c65f2c766c67c7998faac0fdac /drivers/pinctrl/Kconfig
parent5f714700b1892f8d67495567f16c63ad7b20d6b3 (diff)
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>
Diffstat (limited to 'drivers/pinctrl/Kconfig')
-rw-r--r--drivers/pinctrl/Kconfig1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
index b3fe1d339632..0e75d94972ba 100644
--- a/drivers/pinctrl/Kconfig
+++ b/drivers/pinctrl/Kconfig
@@ -254,6 +254,7 @@ config PINCTRL_ZYNQ
help
This selects the pinctrl driver for Xilinx Zynq.
+source "drivers/pinctrl/aspeed/Kconfig"
source "drivers/pinctrl/bcm/Kconfig"
source "drivers/pinctrl/berlin/Kconfig"
source "drivers/pinctrl/freescale/Kconfig"