If CONFIG_OF_CONTROL is enabled, lib/fdtdec.c is compiled. It includes <asm/gpio.h> and then <asm/gpio.h> includes <asm/arch/gpio.h>. Consequently, all the SoCs that enable CONFIG_OF_CONTROL must have <asm/arch/gpio.h> even if they do not support GPIO.
In the first place, GPIO has nothing to do with OF_CONTROL. It is wrong that lib/fdtdec.c includes GPIO functions; it should be split into two files, FDT-common things and GPIO things. It is, however, a pretty big work to fix that correctly.
This is a compromised commit to add a dummy <asm/arch/gpio.h> to support OF_CONTROL for UniPhier platform. This dummy header will be removed after FDT-GPIO stuff is fixed correctly.
Signed-off-by: Masahiro Yamada yamada.m@jp.panasonic.com ---
I am working on the task to split lib/fdtdec.c and move GPIO functions to drivers/gpio/.
arch/arm/include/asm/arch-uniphier/gpio.h | 6 ++++++ 1 file changed, 6 insertions(+) create mode 100644 arch/arm/include/asm/arch-uniphier/gpio.h
diff --git a/arch/arm/include/asm/arch-uniphier/gpio.h b/arch/arm/include/asm/arch-uniphier/gpio.h new file mode 100644 index 0000000..1fc4e19 --- /dev/null +++ b/arch/arm/include/asm/arch-uniphier/gpio.h @@ -0,0 +1,6 @@ +/* + * Dummy header file to enable CONFIG_OF_CONTROL. + * If CONFIG_OF_CONTROL is enabled, lib/fdtdec.c is compiled. + * It includes <asm/arch/gpio.h> via <asm/gpio.h>, so those SoCs that enable + * OF_CONTROL must have arch/gpio.h even if GPIO is not supported. + */