On X1E80100 platforms, in EL2, the APSS watchdog is accessible.
The APSS WDT HW is compatible with the one from SC8280XP, SM8250 and the
like. So describe it in the SoC dtsi, mark it as reserved and enable it
the EL2 overlay. Also document its compatible.

Signed-off-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
---
Changes in v3:
- Change the comment for the reserved status in the SoC dtsi node
  according to Konrad's suggestion.
- Picked up Rob's R-b tag and Guenter's A-b tag for the bindings patch
- Picked up Dmitry's R-b tag for the dtso patch
- Link to v2: https://patch.msgid.link/20251219-arm64-dts-qcom-x1e80100-el2-add-apss-wdt-v2-0-fdfc6ba663e6@oss.qualcomm.com

Changes in v2:
- Moved the node in the SoC dtsi and marked it as reserved.
  This allowed dropping the interrupt-parent property.
  As suggested by Stephan.
- Added separate patch to enable the node in EL2 overlay.
- Picked up Rob's R-b patch for bindings patch..
- Link to v1: https://patch.msgid.link/20251214-arm64-dts-qcom-x1e80100-el2-add-apss-wdt-v1-0-94ee80b8cbe7@oss.qualcomm.com

---
Abel Vesa (3):
      dt-bindings: watchdog: Document X1E80100 compatible
      arm64: dts: qcom: hamoa: Add the APSS watchdog
      arm64: dts: qcom: x1-el2: Enable the APSS watchdog

 Documentation/devicetree/bindings/watchdog/qcom-wdt.yaml | 1 +
 arch/arm64/boot/dts/qcom/hamoa.dtsi                      | 8 ++++++++
 arch/arm64/boot/dts/qcom/x1-el2.dtso                     | 4 ++++
 3 files changed, 13 insertions(+)
---
base-commit: cc3aa43b44bdb43dfbac0fcb51c56594a11338a8
change-id: 20251214-arm64-dts-qcom-x1e80100-el2-add-apss-wdt-e04ca6c99f0f

Best regards,
--  
Abel Vesa <abel.vesa@oss.qualcomm.com>

On Wed, 24 Dec 2025 12:45:19 +0200, Abel Vesa wrote:
> On X1E80100 platforms, in EL2, the APSS watchdog is accessible.
> The APSS WDT HW is compatible with the one from SC8280XP, SM8250 and the
> like. So describe it in the SoC dtsi, mark it as reserved and enable it
> the EL2 overlay. Also document its compatible.
> 
> 

Applied, thanks!

[1/3] dt-bindings: watchdog: Document X1E80100 compatible
      commit: 6609c1976e64b6ce31fc2de11136dd7703372f20
[2/3] arm64: dts: qcom: hamoa: Add the APSS watchdog
      commit: 4da4883613f62d4d60ada443d09ac36644f27d8a
[3/3] arm64: dts: qcom: x1-el2: Enable the APSS watchdog
      commit: f010e0b997035d82586e32e3427d88ef76edb3cb

Best regards,
-- 
Bjorn Andersson <andersson@kernel.org>