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

- From: Guenter Roeck \<linux@roeck-us.net\>
- Date: 2026-09-09 14:09:48 
- List: linux-fbdev
- Page: https://ratatoskr.run/linux-fbdev/2026/09/17539233
- Thread: https://ratatoskr.run/linux-arm-kernel/2026/09/17538499/t.md

```text
On 9/9/26 06:21, Arnd Bergmann 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>

Acked-by: Guenter Roeck <linux@roeck-us.net>

```