Messages in this thread |  | | Date | Thu, 30 Apr 2026 11:45:42 +0530 | | From | Pavan Kondeti <> | | Subject | Re: [PATCH RESEND v8 2/2] watchdog: Add driver for Gunyah Watchdog |
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On Mon, Mar 30, 2026 at 09:11:48AM -0500, Bjorn Andersson wrote: > On Wed, Mar 11, 2026 at 11:16:31AM +0530, Pavankumar Kondeti wrote: > > From: Hrishabh Rajput <hrishabh.rajput@oss.qualcomm.com> > > > > On Qualcomm SoCs running under the Gunyah hypervisor, access to watchdog > > through MMIO is not available on all platforms. Depending on the > > hypervisor configuration, the watchdog is either fully emulated or > > exposed via ARM's SMC Calling Conventions (SMCCC) through the Vendor > > Specific Hypervisor Service Calls space. > > > > Add driver to support the SMC-based watchdog provided by the Gunyah > > Hypervisor. Device registration is done in the QCOM SCM driver after > > checks to restrict the watchdog initialization to Qualcomm devices > > running under Gunyah. > > > > Gunyah watchdog is not a hardware but an SMC-based vendor-specific > > hypervisor interface provided by the Gunyah hypervisor. The design > > involving QCOM SCM driver for registering the platform device has been > > devised to avoid adding non-hardware nodes to devicetree. > > > > Tested-by: Shivendra Pratap <shivendra.pratap@oss.qualcomm.com> > > Tested-by: Neil Armstrong <neil.armstrong@linaro.org> > > Tested-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com> > > Reviewed-by: Guenter Roeck <linux@roeck-us.net> > > Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> > > Signed-off-by: Hrishabh Rajput <hrishabh.rajput@oss.qualcomm.com> > > Signed-off-by: Pavankumar Kondeti <pavan.kondeti@oss.qualcomm.com> > > Guenter, there's no build-time dependency between the two patches. I'm > applying patch 1 through the qcom tree, please apply this patch through > the watchdog tree. > Thanks Bjorn. I noticed that 1/2 is available in v7.1-rc1 , however 2/2 is missing. Guenter, can you please pick it up for next release?
Thanks, Pavan
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