[PATCH 1/1] ARM: EXYNOS: Update CONFIG_ARCH_NR_GPIO for Exynos

[kgene@kernel.org (Kukjin Kim)]

Sachin Kamat wrote:
> 
> On 22 July 2013 07:18, Kukjin Kim <kgene.kim@samsung.com> wrote:
> > Sachin Kamat wrote:
> >>
> >> With the recent cleanup in Exynos platform code notably commits
> >> 17859bec ("ARM: EXYNOS: Do not select legacy Kconfig symbols any
> >> more") and b9222210 ("ARM: EXYNOS: Remove mach/gpio.h"), the definition
> >> of ARCH_NR_GPIOS got removed. This started causing problems on SoCs
> like
> >> Exynos4412 which have more (285) than the default number of GPIOs
(255).
> >> Thus define this number in Kconfig file. Without this patch we get the
> >> following errors during boot:
> >>
> >> gpiochip_add: gpios 251..258 (gpv0) failed to register
> >> samsung-pinctrl 106e0000.pinctrl: failed to register gpio_chip gpv0,
> >> error code: -22
> >> samsung-pinctrl: probe of 106e0000.pinctrl failed with error -22
> >>
> >> Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
> >> Cc: Tomasz Figa <t.figa@samsung.com>
> >> ---
> >> Based on Kukjin's for-next tree.
> >> ---
> >>  arch/arm/Kconfig |    1 +
> >>  1 file changed, 1 insertion(+)
> >>
> >> diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
> >> index ddf2667..380a53b 100644
> >> --- a/arch/arm/Kconfig
> >> +++ b/arch/arm/Kconfig
> >> @@ -1578,6 +1578,7 @@ config ARCH_NR_GPIO
> >>       default 512 if SOC_OMAP5
> >>       default 392 if ARCH_U8500
> >>       default 352 if ARCH_VT8500
> >> +     default 288 if ARCH_EXYNOS
> >>       default 288 if ARCH_SUNXI
> >>       default 264 if MACH_H4700
> >>       default 0
> >> --
> >> 1.7.9.5
> >
> > Hmm, BTW, I'm wondering why it is 288 not 285 or other specific
number...
> 
> I wasn't really sure if we can have any number there. I chose the
> closest one (288) which was already used by other platform.
> If there is no problem to use 285 itself then I can resend with that
> number. Please let me know.
> 
If there is no reason, please don't use bigger value than necessary one.

Thanks,
Kukjin