[PATCH v4 0/5] dt-bindings: usb: atmel: convert Atmel USB controller bindings to YAML

Charan Pedumuru
2026-03-27T16:47:53Z

This patch series converts the legacy text-based Device Tree bindings for
Atmel/Microchip USB controllers to DT schema (YAML) format.

Note:
The patch "dt-bindings: usb: atmel,at91sam9rl-udc: convert to DT schema"
depends on the patch "arm: dts: at91: remove unused #address-cells/#size-cells
from sam9x60 UDC node". If the DT schema patch is applied before the DTS
cleanup patch, `dtbs_check` will fail due to the presence of the removed
properties in the existing DTS.

Signed-off-by: Charan Pedumuru <charan.pedumuru@gmail.com>
---
Changes in v4:
- generic-ohci: Modify the commit message and modify description for the
properties "atmel,vbus-gpio" and "atmel,oc-gpio".
- atmel,at91rm9200-udc: Remove minItems for clocks and rename
unevaluatedProperties to additionalProperties.
- atmel,at91sam9rl-udc: Remove minItems for clocks and modify commit
message.
- all: Remove the corresponding text binding node for each patch from
the text binding file.
- Link to v3: https://lore.kernel.org/r/20260307-atmel-usb-v3-0-3dc48fe772be@gmail.com

Changes in v3:
- sam9x60: Add a new patch removing the unnecessary #address-cells and
#size-cells properties from the sam9x60 UDC node.
- atmel,at91sam9rl-udc: Remove #address-cells and #size-cells from the
atmel,at91sam9rl-udc binding properties.
- generic-ohci: Add an else condition to the generic-ohci schema properties
for improved validation precision.
- Link to v2: https://lore.kernel.org/r/20260224-atmel-usb-v2-0-6d6a615c9c47@gmail.com

Changes in v2:
- Drop the separate YAML patches for OHCI and EHCI.
- Add the compatibles "atmel,at91rm9200-ohci" and "atmel,at91sam9g45-ehci"
to the existing generic OHCI and EHCI binding files.
- Link to v1: https://lore.kernel.org/r/20260201-atmel-usb-v1-0-d1a3e93003f1@gmail.com

---
Charan Pedumuru (5):
arm: dts: at91: remove unused #address-cells/#size-cells from sam9x60 udc node
dt-bindings: usb: generic-ohci: add AT91RM9200 OHCI binding support
dt-bindings: usb: generic-ehci: fix schema structure and add at91sam9g45 constraints
dt-bindings: usb: atmel,at91rm9200-udc: convert to DT schema
dt-bindings: usb: atmel,at91sam9rl-udc: convert to DT schema

.../bindings/usb/atmel,at91rm9200-udc.yaml | 76 +++++++++++++
.../bindings/usb/atmel,at91sam9rl-udc.yaml | 74 ++++++++++++
.../devicetree/bindings/usb/atmel-usb.txt | 125 ---------------------
.../devicetree/bindings/usb/generic-ehci.yaml | 46 +++++---
.../devicetree/bindings/usb/generic-ohci.yaml | 41 +++++++
arch/arm/boot/dts/microchip/sam9x60.dtsi | 2 -
6 files changed, 224 insertions(+), 140 deletions(-)
---
base-commit: 3f24e4edcd1b8981c6b448ea2680726dedd87279
change-id: 20260129-atmel-usb-37f89a141e48

Best regards,
--
Charan Pedumuru <charan.pedumuru@gmail.com>