The SSE-300 SLOWCLK Secure Watchdog Timer is only defined at address
0x5802e000 in the secure region.
Page 45 of the SSE-300 TRM specifies that "the watchdog is Secure
access only".

SSE-300 TRM: https://support.arm.com/documentation/101773/latest/

Fixes: 8901bb414a24 ("hw/arm/armsse: Add SSE-300 support")
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Simon Xu <simonxhy0404@gmail.com>
---
 hw/arm/armsse.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/arm/armsse.c b/hw/arm/armsse.c
index ddb210c895..e99b491bd9 100644
--- a/hw/arm/armsse.c
+++ b/hw/arm/armsse.c
@@ -409,7 +409,7 @@ static const ARMSSEDeviceInfo sse300_devices[] = {
         .name = "s32kwatchdog",
         .type = TYPE_CMSDK_APB_WATCHDOG,
         .index = 0,
-        .addr = 0x4802e000,
+        .addr = 0x5802e000,
         .ppc = NO_PPC,
         .irq = NMI_0,
         .slowclk = true,
-- 
2.53.0

On Wed, 5 Aug 2026 at 20:12, Simon Xu <simonxhy0404@gmail.com> wrote:
>
> The SSE-300 SLOWCLK Secure Watchdog Timer is only defined at address
> 0x5802e000 in the secure region.
> Page 45 of the SSE-300 TRM specifies that "the watchdog is Secure
> access only".
>
> SSE-300 TRM: https://support.arm.com/documentation/101773/latest/
>
> Fixes: 8901bb414a24 ("hw/arm/armsse: Add SSE-300 support")
> Suggested-by: Peter Maydell <peter.maydell@linaro.org>
> Signed-off-by: Simon Xu <simonxhy0404@gmail.com>
> ---
>  hw/arm/armsse.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

thanks
-- PMM