Re: [PATCH v8 0/2] Add support for Gunyah Watchdog

[Pavan Kondeti <pavan.kondeti@oss.qualcomm.com>]

Hi Bjorn / Wim,

On Tue, Feb 24, 2026 at 02:58:05PM +0530, Pavan Kondeti wrote:
> Hi Bjorn / Wim,
> 
> On Tue, Nov 18, 2025 at 10:40:55AM +0000, Hrishabh Rajput via B4 Relay wrote:
> > Gunyah is a Type-I hypervisor which was introduced in the patch series
> > [1]. It is an open source hypervisor. The source repo is available at
> > [2].
> > 
> > The Gunyah Hypervisor doesn't allow its Virtual Machines to directly
> > access the MMIO watchdog. It either provides the fully emulated MMIO
> > based watchdog interface or the SMC-based watchdog interface depending
> > on the hypervisor configuration.
> > The SMC-based watchdog follows ARM's SMC Calling Convention (SMCCC)
> > version 1.1 and uses Vendor Specific Hypervisor Service Calls space.
> > 
> > This patch series adds support for the SMC-based watchdog interface
> > provided by the Gunyah Hypervisor.
> > 
> > This series is tested on SM8750 platform.
> > 
> > [1]
> > https://lore.kernel.org/all/20240222-gunyah-v17-0-1e9da6763d38@quicinc.com/
> > 
> > [2]
> > https://github.com/quic/gunyah-hypervisor
> > 
> > Signed-off-by: Hrishabh Rajput <hrishabh.rajput@oss.qualcomm.com>
> > ---
> > Changes in v8:
> > - Fix error handling in gunyah_wdt_probe() to fail silently with -ENODEV
> >   if WDT_STATUS call returns -EOPNOTSUPP, indicating support for Gunyah
> >   watchdog is not present. Fail with logs for other errors.
> > - Link to v7: https://lore.kernel.org/r/20251114-gunyah_watchdog-v7-0-f5c155b941d5@oss.qualcomm.com
> > 
> 
> The series applies cleanly on v7.0-rc1. I have tested the watchdog
> driver functionality and ramdumps collection on Kodiak RB3 Gen2
> platform. Can you please pick this series for v7.1?
> 
> As Hrishabh mentioned earlier, both patches don't have any compile time
> dependencies.
> 

Since Hrishabh has left Qualcomm, I am taking over the series. Hence
sending request emails to include this series for v7.0 . I did verify
this on v7.0-rc1 as mentioned above. Since the series applies cleanly, I
have not re-sent the series. However, if you prefer to resend it since a
new person taking over, I can re-send the series with my Signed-off-by.

Please let me know your preference.

Thanks,
Pavan