285bc90d5b
Add WDAT handling for sbsa-gwdt on arm/virt machine. WDAT mode is enabled by 'wdat' option: ex: "-device sbsa-gwdt,wdat=on" When WDAT is enabled: - Build the WDAT ACPI table instead of the GTDT watchdog entry, since they are mutually exclusive due to different timer resolution (WDAT uses 1 kHz vs GTDT's system counter frequency). - Skip FDT watchdog node creation, as the DT-based Linux driver would use the system counter frequency which doesn't match the WDAT-mode 1 kHz clock. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Reviewed-by: Eric Auger <eric.auger@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Message-ID: <20260702145856.1539572-8-imammedo@redhat.com>