linux-kernel - [PATCH v2 00/11] serial: mvebu-uart: Fixes and new support for higher baudrates

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Message-Id: <20210625143617.12826-1-pali@kernel.org>
Date:   Fri, 25 Jun 2021 16:36:06 +0200
From:   Pali Rohár <pali@...nel.org>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Andrew Lunn <andrew@...n.ch>,
        Gregory Clement <gregory.clement@...tlin.com>,
        Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
        Vladimir Vid <vladimir.vid@...tura.hr>,
        Marek Behún <kabel@...nel.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-clk@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v2 00/11] serial: mvebu-uart: Fixes and new support for higher baudrates

This patch series fixes mvebu-uart driver used on Marvell Armada 37xx
boards and add support for baudrates higher than 230400.

In v2 was added patch with DIV_U64_ROUND_CLOSEST helper and changed
patch "implement UART clock driver for configuring UART base clock" to
fix compile errors on 32-bit archs, including usage of new math helper.

Pali Rohár (11):
  serial: mvebu-uart: fix calculation of clock divisor
  serial: mvebu-uart: do not allow changing baudrate when uartclk is not
    available
  serial: mvebu-uart: correctly calculate minimal possible baudrate
  dt-bindings: mvebu-uart: fix documentation
  arm64: dts: marvell: armada-37xx: Fix reg for standard variant of UART
  serial: mvebu-uart: remove unused member nb from struct mvebu_uart
  math64: New DIV_U64_ROUND_CLOSEST helper
  serial: mvebu-uart: implement UART clock driver for configuring UART
    base clock
  dt-bindings: mvebu-uart: document DT bindings for
    marvell,armada-3700-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

 .../bindings/clock/armada3700-uart-clock.txt  |  24 +
 .../devicetree/bindings/serial/mvebu-uart.txt |  15 +-
 .../arm64/boot/dts/marvell/armada-3720-db.dts |   4 +
 .../dts/marvell/armada-3720-espressobin.dtsi  |   4 +
 .../dts/marvell/armada-3720-turris-mox.dts    |   4 +
 .../boot/dts/marvell/armada-3720-uDPU.dts     |   4 +
 arch/arm64/boot/dts/marvell/armada-37xx.dtsi  |  17 +-
 drivers/tty/serial/Kconfig                    |   1 +
 drivers/tty/serial/mvebu-uart.c               | 605 +++++++++++++++++-
 include/linux/math64.h                        |  13 +
 10 files changed, 661 insertions(+), 30 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/armada3700-uart-clock.txt

-- 
2.20.1