[PATCH v4 0/6] serial: mvebu-uart: Support for higher baudrates

[Pali Rohár]

This patch series add support for baudrates higher than 230400 on
Marvell Armada 37xx boards.

Please review these patches as they touch both Device Tree bindings and
mvebu-uart.c driver.

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
  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
  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

 .../bindings/clock/armada3700-uart-clock.yaml |  49 ++
 .../devicetree/bindings/serial/mvebu-uart.txt |   9 +-
 .../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  |  15 +-
 drivers/tty/serial/Kconfig                    |   1 +
 drivers/tty/serial/mvebu-uart.c               | 592 +++++++++++++++++-
 include/linux/math64.h                        |  13 +
 10 files changed, 674 insertions(+), 21 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/armada3700-uart-clock.yaml

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2.20.1