The touchscreen module on Glymur/Mahua CRDs is a ft3d81 chip which, while
hardware-compatible with the ft8112 (same I2C-HID protocol, same
power-on/reset sequencing), requires the reset-gpios line to be
explicitly wired up in the DT. Without it the reset line remains
permanently asserted after a suspend/resume cycle and all subsequent
I2C transactions fail with -ENXIO.

V2 incorrectly used the generic hid-over-i2c binding. V3
takes a cleaner approach: extend the chip-specific focaltech,ft8112
binding to cover the ft3d81 (they share the same driver) and switch
the glymur-crd node to that binding. This removes the dependency on
the hid-over-i2c properties (hid-descr-addr) and aligns the supply
property names (vcc33-supply / vccio-supply) with the binding schema.

V3 was not picked up; instead V1 was accidentally merged by the maintainer.
V4 corrects this by superseding the partial V1 fix, and moves the DT change
from glymur-crd.dts to glymur-crd.dtsi where the shared board nodes belong.

v1: https://lore.kernel.org/linux-arm-msm/20260522-arm64-dts-glymur-crd-add-reset-gpio-to-touchscreen-v1-1-c7653924acdc@oss.qualcomm.com/ (local)
Changes in v1:
  - Initial submission: add reset-gpios to touchscreen node in glymur-crd.dtsi

v2: https://lore.kernel.org/linux-arm-msm/20260523-arm64-dts-glymur-crd-add-reset-gpio-to-touchscreen-v2-0-5c333051e5bb@oss.qualcomm.com/ (local)
Changes in v2:
  - Add dt-bindings patch to document reset-gpios in hid-over-i2c schema
    (flagged by dtbs_check on v1)
  - No change to the DTS patch itself

v3: https://lore.kernel.org/linux-arm-msm/20260603-arm64-dts-glymur-crd-add-reset-gpio-to-v3-0-3453ef577bcf@oss.qualcomm.com/ (local)
Changes in v3:
  - Drop prerequisite-message-id; series is now self-contained
  - Patch 1 (new): add focaltech,ft3d81 to the focaltech,ft8112
    binding compatible enum
  - Patch 2: Added focaltech,ft3d81 DT support which is hardware-compatible with the ft8112

Changes in v4:
  - v1 was accidentally merged by the maintainer instead of v3; raising
    v4 to correct this
  - Move DT change from glymur-crd.dts to glymur-crd.dtsi as the
    touchscreen node belongs to the shared board DTSI

---
Pradyot Kumar Nayak (2):
      dt-bindings: input: focaltech,ft8112: Add focaltech,ft3d81 compatible
      arm64: dts: qcom: glymur-crd: Add FocalTech ft3d81 touchscreen support

 Documentation/devicetree/bindings/input/focaltech,ft8112.yaml | 9 +++++++--
 arch/arm64/boot/dts/qcom/glymur-crd.dtsi                      | 7 +++----
 2 files changed, 10 insertions(+), 6 deletions(-)
---
base-commit: 1a1757b76427f6201bfe0bf1bea9f7574f332a93
change-id: 20260717-add_focaltech_ft3d81_touchscreen_support-263409a84b78

Best regards,
-- 
Pradyot Kumar Nayak [off-list ref]