# Re: \[PATCH 02/14\] mfd: remove unused rdc321x southbridge support

- From: Linus Walleij \<linusw@kernel.org\>
- Date: 2026-09-16 16:49:54 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2026/09/17588240
- Thread: https://ratatoskr.run/linux-arm-kernel/2026/09/17538499/t.md

```text
On Wed, Sep 9, 2026 at 3:22 PM Arnd Bergmann [ref] wrote:

> From: Arnd Bergmann <arnd@arndb.de>
>
> The rdc321x was a 486-class SoC developed by RDC. While RDC's later
> products closely resemble the DM&P Vortex86 product line and are still
> sold under both names, I checked the datasheets for those and found that
> the GPIO and WDT blocks on them are incompatible with the rtc321x.
>
> Remove this driver, as there is no way to run Linux any more on the
> older chips after i486 support has been removed.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Reviewed-by: Linus Walleij <linusw@kernel.org>

Yours,
Linus Walleij

```