On Fri, Aug 6, 2021 at 4:44 PM Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> wrote: > > By default the 512 GPIOs is a maximum on any x86 platform. > With, for example, Intel Tiger Lake-H the SoC based controller > occupies up to 480 pins. This leaves only 32 available for > GPIO expanders or other drivers, like PMIC. Hence, bump the > maximum GPIO number to 1024 for X86_64 and leave 512 for X86_32. > > Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> > --- > arch/x86/Kconfig | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig > index 45962aaf2b2c..495ed6229b52 100644 > --- a/arch/x86/Kconfig > +++ b/arch/x86/Kconfig > @@ -340,6 +340,19 @@ config NEED_PER_CPU_PAGE_FIRST_CHUNK > config ARCH_HIBERNATION_POSSIBLE > def_bool y > > +# The GPIO number here must be sorted by descending number. In case of > +# a multiplatform kernel, we just want the highest value required by the > +# selected platforms. > +config ARCH_NR_GPIO > + int > + default 1024 if X86_64 > + default 512 if X86_32 > + default 0 Wouldn't default 1024 if X86_64 default 512 be sufficient? It's either X86_64 or X86_32 anyway AFAICS. > + help > + Maximum number of GPIOs in the system. > + > + If unsure, leave the default value. > + > config ARCH_SUSPEND_POSSIBLE > def_bool y > > --
