linux-kernel - [PATCH v8 0/6] serial: mvebu-uart: Support for higher baudrates

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Date:   Fri, 11 Feb 2022 20:12:32 +0100
From:   Marek Behún <kabel@...nel.org>
To:     Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Gregory Clement <gregory.clement@...tlin.com>
Cc:     Pali Rohár <pali@...nel.org>,
        linux-clk@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Marek Behún <kabel@...nel.org>
Subject: [PATCH v8 0/6] serial: mvebu-uart: Support for higher baudrates

Hello Greg, Stephen, Gregory,

at Pali's request I have reviewed, updated and tested his series adding
support for higher baudrates on Marvell Armada A37xx boards.

I have updated commit messages, some comments and indentation at some
places. As per Stephen Boyd's request, commit message of patch 3 now
contains more information about why we need to have UART
clock-controller binding defined in such a way (due to backwards
compatibility).

Marek

Changes in v7:
* fixed lint errors in yaml binding file
* added Reviewed-by tags
* changed commit messages and comments a little
* fixed indentation at some places
* swapped patch 2 and 3 (dt-binding defining new binding should go
  before the driver adding usage of that new binding)

Changes in v6:
* fixed yaml binding file and dts files

Changes in v5:
* fixed yaml binding file

Changes in v4:
* converted armada3700-uart-clock documentation to YAML
* split documentation changes into two commits:
  - first which adds clock documentation
  - second which updates UART documentation

Changes in v3:
v3 is rebased on top of Linus master branch and all already applied patches
were dropped. There are no changes in patches itself since v2.

Pali Rohár (6):
  math64: New DIV_U64_ROUND_CLOSEST helper
  dt-bindings: mvebu-uart: document DT bindings for
    marvell,armada-3700-uart-clock
  serial: mvebu-uart: implement UART clock driver for configuring UART
    base clock
  dt-bindings: mvebu-uart: update information about UART clock
  arm64: dts: marvell: armada-37xx: add device node for UART clock and
    use it
  serial: mvebu-uart: implement support for baudrates higher than 230400
    Bd

 .../clock/marvell,armada-3700-uart-clock.yaml |  59 ++
 .../devicetree/bindings/serial/mvebu-uart.txt |   9 +-
 arch/arm64/boot/dts/marvell/armada-37xx.dtsi  |  14 +-
 drivers/tty/serial/Kconfig                    |   1 +
 drivers/tty/serial/mvebu-uart.c               | 596 +++++++++++++++++-
 include/linux/math64.h                        |  13 +
 6 files changed, 671 insertions(+), 21 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/marvell,armada-3700-uart-clock.yaml

-- 
2.34.1