[PATCH v3 0/2] arm64: dts: qcom: Add HP OmniBook X 16-cp1

[Jeff Roach]

This adds a device tree for the HP OmniBook X 16-cp1 (board 8F46), a 16"
laptop with the 12-core Snapdragon X2 Elite (Mahua).

Tested with Ubuntu's 7.3-based linux-qcom-x1e kernel. Everything listed
in patch 2 works there, including suspend (s2idle).

Notes:
- DisplayPort at HBR2 needs "phy: qualcomm: qmp-combo: update DP PHY PLL
  programming on Glymur" v6 [1] (tested with v5). Without it the stream
  runs at half rate and the monitor shows no picture. With it, about 1 in
  4 plug-ins still gives no picture; replugging fixes it.
- The GPU is disabled. It works with "drm/msm: Mahua GPU support" [2]
  applied; I'll send a follow-up to enable it once that lands.
- Audio needs a topology and UCM config for the "HP-OmniBook-X16" model,
  which are not upstream yet. The headphone jack (SDCA) is not described.
- I hit one hard lockup while plugging USB-C devices during testing and
  could not reproduce it in later plug/unplug cycles.

This series was written with the help of an AI coding assistant
(Claude): the device tree started from glymur-hp-elitebook-x-g2q.dts and
the laptop's ACPI tables. I went through the regulators against the
ACPI power votes for v3. I reviewed it and tested it on the laptop.

Earlier bring-up report: [3]

Changes in v3:
- Set vreg_l1f_e1 to 904 mV (was 880 mV, copied from the EliteBook) to
  match the ACPI power votes on this laptop, rename it to
  vreg_l1f_e1_0p9 (Konrad)
- Add Acked-by to patch 1 (Krzysztof)
- Link to v2: https://lore.kernel.org/r/20261026154001.9323-1-jeff.roach0@xxxxxxxxx

Changes in v2:
- Add static data-lanes to usb_2_qmpphy so the PHY uses USB3-only mode
  (reported by Sashiko)
- Drop the Assisted-by tag, describe the tool use in the changelog
  instead (Krzysztof)
- Link to v1: https://lore.kernel.org/r/20261024044650.9936-1-jeff.roach0@xxxxxxxxx

[1] https://lore.kernel.org/all/20261028-glymur-phy-v3-v6-0-1f1d2e565a66@xxxxxxxxxxxxxxxx/
[2] https://lore.kernel.org/all/20260925-mahua-gpu-v1-0-0fa0bfd8d315@xxxxxxxxxxxxxxxx/
[3] https://lore.kernel.org/all/CAAnD8Rb4ZZrHFWMJayabioB_8bOHh1mqZ5LCXZz0jTNGMA7UZQ@xxxxxxxxxxxxxx/

Jeff Roach (2):
  dt-bindings: arm: qcom: Add HP OmniBook X 16-cp1
  arm64: dts: qcom: Add HP OmniBook X 16-cp1

 .../devicetree/bindings/arm/qcom.yaml         |   1 +
 arch/arm64/boot/dts/qcom/Makefile             |   1 +
 .../boot/dts/qcom/mahua-hp-omnibook-x16.dts   | 855 ++++++++++++++++++
 3 files changed, 857 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/mahua-hp-omnibook-x16.dts


base-commit: f5672a3dff0291d6a45eb0c258b9d2baeb4dc577
-- 
2.55.0