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authorAndrew Jeffery <andrew@aj.id.au>2016-08-30 10:54:24 +0300
committerLinus Walleij <linus.walleij@linaro.org>2016-09-07 17:48:22 +0300
commit4d3d0e4272d8d660f5f14f5abcf96fb4df1aa94b (patch)
treea4722451117ba7c65f2c766c67c7998faac0fdac /drivers/pinctrl/Makefile
parent5f714700b1892f8d67495567f16c63ad7b20d6b3 (diff)
downloadlinux-4d3d0e4272d8d660f5f14f5abcf96fb4df1aa94b.tar.xz
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/Makefile')
-rw-r--r--drivers/pinctrl/Makefile1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
index 8ebd7b8e1621..11bad373dfe0 100644
--- a/drivers/pinctrl/Makefile
+++ b/drivers/pinctrl/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_PINCTRL_TB10X) += pinctrl-tb10x.o
obj-$(CONFIG_PINCTRL_ST) += pinctrl-st.o
obj-$(CONFIG_PINCTRL_ZYNQ) += pinctrl-zynq.o
+obj-$(CONFIG_ARCH_ASPEED) += aspeed/
obj-y += bcm/
obj-$(CONFIG_PINCTRL_BERLIN) += berlin/
obj-y += freescale/