Messages in this thread |  | | Date | Thu, 30 Apr 2026 07:37:12 -0700 | | Subject | Re: [PATCH RESEND v8 2/2] watchdog: Add driver for Gunyah Watchdog | | From | Guenter Roeck <> |
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On 4/29/26 23:15, Pavan Kondeti wrote: > 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? >
I don't send watchdog patches upstream; that has always been handled by Wim.
Guenter
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