[PATCH v2 0/2] serial: 8250_dw: Add support for UltraRISC DP1000 uart

[Jia Wang via B4 Relay]

This is version 2 of the patch series.  
Previous version was sent via local SMTP, some recipients received it.  
This series is now sent via official web endpoint.

This patch series adds support for the UltraRISC DP1000 UART controller.

The series includes two patches:
1. Update device tree bindings to document the DP1000 UART compatible string
   and required properties.
2. Add driver support in the 8250_dw driver by handling the DP1000-specific
   initialization and configuration.

The patches have been tested on Ultrarisc DP1000 development board with
Linux v7.0-rc2, verifying basic UART functionality and runtime suspend/resume.

Signed-off-by: Jia Wang <wangjia at ultrarisc.com>
---
Changes in v2:
- Rebased on Linux v7.0-rc4 (previously on v7.0-rc2).
- Reordered patch series: DT binding patch comes before driver changes.
- Updated commit message for DT binding patch.
- Link to v1: https://patch.msgid.link/20260316-ultrarisc-serial-v1-0-c464f3e933a5@ultrarisc.com

---
Jia Wang (1):
      dt-bindings: serial: update bindings of ultrarisc dp1000 uart

Zhang Xincheng (1):
      riscv: ultrarisc: 8250_dw: support DP1000 uart

 .../devicetree/bindings/serial/snps-dw-apb-uart.yaml         |  2 ++
 drivers/tty/serial/8250/8250_dw.c                            | 12 ++++++++++++
 2 files changed, 14 insertions(+)
---
base-commit: f338e77383789c0cae23ca3d48adcc5e9e137e3c
change-id: 20260309-ultrarisc-serial-64ff637edf26

Best regards,
--  
Jia Wang <wangjia at ultrarisc.com>