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SubjectRe: [PATCH RESEND v8 2/2] watchdog: Add driver for Gunyah Watchdog
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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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