[PATCH v4 0/7] Tegra264 PWM support

Mikko Perttunen
2026-03-31T02:12:38Z

Hello,

this adds support for the PWM controller on Tegra264. The controller
is similar to previous generations, but the register fields are
widened, the depth is made configurable, and the enable bit moves
to a different spot.

This series adds only basic support with fixed depth -- configurable
depth will come later.

Patch 1 adds device tree bindings for Tegra264 PWM (compatible
string).

Patches 2 to 6 contain the PWM driver changes.

Patch 7 adds device tree nodes for the PWM controllers on Tegra264.

Thanks,
Mikko

---
Changes in v4:
- Use ULONG_MAX rather than S64_MAX to avoid overflow on 32-bit platforms
- Link to v3: https://lore.kernel.org/r/20260330-t264-pwm-v3-0-5714427d5976@nvidia.com

Changes in v3:
- Fixed device tree binding patch.
- Picked up trailers.
- Link to v2: https://lore.kernel.org/r/20260325-t264-pwm-v2-0-998d885984b3@nvidia.com

Changes in v2:
- Added device tree binding and Tegra264 device tree patches by Thierry.
- Link to v1: https://lore.kernel.org/r/20260323-t264-pwm-v1-0-4c4ff743050f@nvidia.com

---
Mikko Perttunen (4):
pwm: tegra: Modify read/write accessors for multi-register channel
pwm: tegra: Parametrize enable register offset
pwm: tegra: Parametrize duty and scale field widths
pwm: tegra: Add support for Tegra264

Thierry Reding (2):
dt-bindings: pwm: Document Tegra264 controller
arm64: tegra: Add PWM controllers on Tegra264

Yi-Wei Wang (1):
pwm: tegra: Avoid hard-coded max clock frequency

.../bindings/pwm/nvidia,tegra20-pwm.yaml | 1 +
arch/arm64/boot/dts/nvidia/tegra264.dtsi | 72 +++++++++++
drivers/pwm/pwm-tegra.c | 141 ++++++++++++++-------
3 files changed, 171 insertions(+), 43 deletions(-)
---
base-commit: 11439c4635edd669ae435eec308f4ab8a0804808
change-id: 20260303-t264-pwm-57e10d039df1