Re: [resend, PATCH v2 1/1] x86/platform: Increase maximum GPIO number for X86_64

[Rafael J. Wysocki]

On Thu, Aug 26, 2021 at 5:03 PM Andy Shevchenko
<andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
>
> By default the 512 GPIOs is the 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>
> Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>

Reviewed-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>

> ---
> v2 resend: actually added Rafael and linux-acpi@ to Cc list
> v2: dropped confusing comment and help, simplified defaults (Rafael)
>     added Rb tag (Linus)
>  arch/x86/Kconfig | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 858ce2736bd6..25960fe242bd 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -338,6 +338,11 @@ config NEED_PER_CPU_PAGE_FIRST_CHUNK
>  config ARCH_HIBERNATION_POSSIBLE
>         def_bool y
>
> +config ARCH_NR_GPIO
> +       int
> +       default 1024 if X86_64
> +       default 512
> +
>  config ARCH_SUSPEND_POSSIBLE
>         def_bool y
>
> --
> 2.32.0
>