linux-kernel - [PATCH RFC 0/2] Introduce PRU UART driver

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Message-ID: <20250501003113.1609342-1-jm@ti.com>
Date: Wed, 30 Apr 2025 19:31:11 -0500
From: Judith Mendez <jm@...com>
To: Judith Mendez <jm@...com>,
        Greg Kroah-Hartman
	<gregkh@...uxfoundation.org>,
        Kevin Hilman <khilman@...libre.com>
CC: Jiri Slaby <jirislaby@...nel.org>,
        Andy Shevchenko
	<andriy.shevchenko@...ux.intel.com>,
        <linux-kernel@...r.kernel.org>, <linux-serial@...r.kernel.org>,
        Hari Nagalla <hnagalla@...com>
Subject: [PATCH RFC 0/2] Introduce PRU UART driver

This patch series is sent as an RFC to get some initial comments
on the PRU UART driver.

The ICSSM modules on am64x SoC and the PRUSS module on am62 SoC or am335x
SoCs have a UART sub-module. This patch series introduces the driver and the
corresponding binding documentation for this sub-module.

The DTS patches for adding PRU nodes and enabling PRU UART will be added
in a later v1 version of the series if accepted.

This driver has been previously tested on the following boards:
am64x SK, am62x SK, and am335x SK boards.

Bin Liu (2):
  dt-bindings: serial: add binding documentation for TI PRUSS UART
  serial: 8250: Add PRUSS UART driver

 .../bindings/serial/ti,pruss-uart.yaml        |  54 +++++
 drivers/tty/serial/8250/8250_pruss.c          | 213 ++++++++++++++++++
 drivers/tty/serial/8250/Kconfig               |  10 +
 drivers/tty/serial/8250/Makefile              |   1 +
 4 files changed, 278 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/serial/ti,pruss-uart.yaml
 create mode 100644 drivers/tty/serial/8250/8250_pruss.c

-- 
2.49.0