linux-kernel - [PATCH v13 0/5] Add RSCI driver for Renesas RZ/T2H SoC

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Message-ID: <20250628115715.102338-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Sat, 28 Jun 2025 12:57:10 +0100
From: Prabhakar <prabhakar.csengg@...il.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>,
	Wolfram Sang <wsa+renesas@...g-engineering.com>,
	linux-serial@...r.kernel.org,
	devicetree@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	Prabhakar <prabhakar.csengg@...il.com>,
	Biju Das <biju.das.jz@...renesas.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH v13 0/5] Add RSCI driver for Renesas RZ/T2H SoC

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

Hi all,

This patch series adds support for the Renesas RSCI (Renesas Serial
Communication Interface) driver for the RZ/T2H SoC. The RSCI is a serial
communication interface that provides UART functionality and is used in
various Renesas SoCs.

The series includes the following changes:
1. Device Tree Bindings
2. RSCI Driver Implementation
3. SH-SCI Driver Modifications
4. Maintainer Updates

v12->v13:
- Rebased on latest linux-next.
- Updated commit message for patch 1/5 to clarify the ABI change.
- Used `R9A09G077_CLK_PCLKM` macro for core clock.
- Dropped the defconfig patch as it is already in the queue.
- Added reviewed-by and acked-by tags to relevant patches.

v11->v12:
- Rebased on latest linux-next.
- Added defconfig patch to enable RSCI driver.
- Added RZ/N2H support to the dt-bindings
- Used port ops callbacks in sci_shutdown() to allow RSCI driver
  to reuse the core shutdown logic.
- Added reviewed-by tags.

v10->v11:
- Rebased on latest linux-next.
- Added a new patch to update the dt-bindings maintainer entry.
- Added a new patch to use port ops callbacks.
- Implemented shutdown_complete callback
- Added reviewed-by tags

Cheers,
Prabhakar

Lad Prabhakar (2):
  dt-bindings: serial: rsci: Update maintainer entry
  serial: sh-sci: Replace direct stop_rx/stop_tx calls with port ops in
    sci_shutdown()

Thierry Bultel (3):
  dt-bindings: serial: renesas,rsci: Add optional secondary clock input
  serial: sh-sci: Use private port ID
  serial: sh-sci: Add support for RZ/T2H SCI

 .../bindings/serial/renesas,rsci.yaml         |  21 +-
 drivers/tty/serial/Kconfig                    |   7 +
 drivers/tty/serial/Makefile                   |   1 +
 drivers/tty/serial/rsci.c                     | 477 ++++++++++++++++++
 drivers/tty/serial/rsci.h                     |  10 +
 drivers/tty/serial/sh-sci-common.h            |   8 +
 drivers/tty/serial/sh-sci.c                   | 212 +++++---
 7 files changed, 646 insertions(+), 90 deletions(-)
 create mode 100644 drivers/tty/serial/rsci.c
 create mode 100644 drivers/tty/serial/rsci.h

-- 
2.49.0