x86/cpu, x86/platform, watchdog: Remove CONFIG_X86_RDC321X support

This depends on M486 CPU support, which has been removed.

Note that we still keep the RDC321X MFD, watchdog and GPIO
drivers, because apparently there were 586/686 CPUs offered with the
RDC321X, according to Arnd Bergmann:

| "the [RDC321X] product line is still actively developed by RDC
|  and DM&P, and I suspect that some of the drivers are still used
|  on 586tsc-class (vortex86dx, vortex86mx) and 686-class
|  (vortex86dx3, vortex86ex) SoCs that do run modern kernels and
|  get updates."

For this reason, update the watchdog driver and offer it on
the broader 32-bit landscape, which has been COMPILE_TEST=y
build-tested previously already:

  -       depends on X86_RDC321X || COMPILE_TEST
  +       depends on X86_32 || COMPILE_TEST

The MFD and GPIO drivers were already independent of CONFIG_X86_RDC321X.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Wim Van Sebroeck <wim@linux-watchdog.org>
Cc: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20250425084216.3913608-6-mingo@kernel.org

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f3f7cb01d69d022538d283f6c7049ba8bd4c3792..68654712e9fc213ea5880377e1af408475c952e7 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -695,17 +695,6 @@ config X86_INTEL_QUARK
          Say Y here if you have a Quark based system such as the Arduino
          compatible Intel Galileo.
 
-config X86_RDC321X
-       bool "RDC R-321x SoC"
-       depends on X86_32
-       depends on X86_EXTENDED_PLATFORM
-       select M486
-       select X86_REBOOTFIXUPS
-       help
-         This option is needed for RDC R-321x system-on-chip, also known
-         as R-8610-(G).
-         If you don't have one of these chips, you should say N here.
-
 config X86_INTEL_LPSS
        bool "Intel Low Power Subsystem Support"
        depends on X86 && ACPI && PCI

diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index dc78729ba2a5d6e035ed3cbe5c2b631d11b76b20..6a9695a16d5e088dce9ae81ef1aeddbeeb5c3615 100644 (file)
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -1547,7 +1547,7 @@ config NV_TCO
 
 config RDC321X_WDT
        tristate "RDC R-321x SoC watchdog"
-       depends on X86_RDC321X || COMPILE_TEST
+       depends on X86_32 || COMPILE_TEST
        depends on PCI
        help
          This is the driver for the built in hardware watchdog