[PATCH 0/3] arm64: dts: ti: k3-am62: Support Main UART wakeup

[Kendall Willis]

On 9/4/25 16:28, Kendall Willis wrote:
> This series adds wakeup support for the Main UART in the device tree of
> the TI AM62 family of devices. It defines the specific pins and pinctrl
> states needed to wakeup the system from the Main UART via I/O
> daisy-chaining. The wakeup-source property is configured to describe the
> low power modes the system can wakeup from using the Main UART.
> 
> Dependencies
> ------------
> This series is dependent on the following series [1] to be merged into
> the kernel. The series adds the system idle states that are available on
> the SoCs. The system idle states are used when configuring the
> wakeup-source property.
> 
> This series is also dependent on the following patch [2] to be merged
> into the kernel. The patch integrates the PIN_WKUP_EN macro which
> enables the WKUP_EN bit.

Series also depends on this series [1] for DT bindings of pinctrl.

[1] https://lore.kernel.org/all/20250904212455.3729029-1-k-willis@ti.com/

> 
> Implementation
> --------------
> This series is intended to be implemented along with the following
> series:
> 
> 1. "pmdomain: ti_sci: Handle wakeup constraint if device has pinctrl
>     wakeup state": Patch which skips setting constraints for wakeup sources
>     that use pinctrl state 'wakeup'.
> 
> 2. "serial: 8250: omap: Add wakeup support": Implements
>     wakeup from the UARTs for TI K3 SoCs
> 
> 3. "arm64: dts: ti: k3-am62: Support Main UART wakeup": (this series)
>     implements the functionality to wakeup the system from the Main UART
> 
> Testing
> -------
> Tested on a SK-AM62B-P1 board with all series and dependencies
> implemented. Suspend/resume verified with the Main UART wakeup source
> by entering a keypress on the console.
> 
> [1] https://lore.kernel.org/linux-arm-kernel/20250812-topic-am62-dt-partialio-v6-15-v2-2-25352364a0ac@baylibre.com/
> [2] https://lore.kernel.org/all/20250904112538.529857-4-a-kaur@ti.com/
> 
> Kendall Willis (3):
>    arm64: dts: ti: k3-am62x-sk-common: Enable Main UART wakeup
>    arm64: dts: ti: k3-am62a7-sk: Enable Main UART wakeup
>    arm64: dts: ti: k3-am62p5-sk: Enable Main UART wakeup
> 
>   arch/arm64/boot/dts/ti/k3-am62a7-sk.dts       | 24 +++++++++++++++----
>   arch/arm64/boot/dts/ti/k3-am62p5-sk.dts       | 24 +++++++++++++++----
>   .../arm64/boot/dts/ti/k3-am62x-sk-common.dtsi | 24 +++++++++++++++----
>   3 files changed, 60 insertions(+), 12 deletions(-)
> 
> 
> base-commit: 4ac65880ebca1b68495bd8704263b26c050ac010