[PATCH V3] tty: serial: bcm63xx: use more precise Kconfig symbol

[Geert Uytterhoeven]

Hi Rafał,

On Fri, Mar 11, 2022 at 10:32 AM Rafał Miłecki <zajec5 at gmail.com> wrote:
> From: Rafał Miłecki <rafal at milecki.pl>
>
> Patches lowering SERIAL_BCM63XX dependencies led to a discussion and
> documentation change regarding "depends" usage. Adjust Kconfig entry to
> match current guidelines. Make this symbol available for relevant
> architectures only.
>
> Cc: Geert Uytterhoeven <geert at linux-m68k.org>
> Ref: f35a07f92616 ("tty: serial: bcm63xx: lower driver dependencies")
> Ref: 18084e435ff6 ("Documentation/kbuild: Document platform dependency practises")
> Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
> ---
> V2: Use precise "depends" (exact platforms)
> V3: Don't default y for COMPILE_TEST

Thanks for the update!

> --- a/drivers/tty/serial/Kconfig
> +++ b/drivers/tty/serial/Kconfig
> @@ -1100,7 +1100,8 @@ config SERIAL_TIMBERDALE
>  config SERIAL_BCM63XX
>         tristate "Broadcom BCM63xx/BCM33xx UART support"
>         select SERIAL_CORE
> -       depends on COMMON_CLK
> +       depends on ARCH_BCM4908 || ARCH_BCM_63XX || BCM63XX || BMIPS_GENERIC || COMPILE_TEST
> +       default ARCH_BCM4908 || ARCH_BCM_63XX || BCM63XX || BMIPS_GENERIC

I'm still not convinced about the default, as it wasn't there before,
hence all existing config files must already have it.
But if the BCM people think it's good to have, I'll shut up ;-)

Reviewed-by: Geert Uytterhoeven <geert+renesas at glider.be>

>         help
>           This enables the driver for the onchip UART core found on
>           the following chipsets:

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds