linux-kernel - [PATCH v3 0/2] i2c: designware: Add support for a bus clock

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Date:   Wed, 20 Feb 2019 13:25:46 +0000
From:   Gareth Williams <gareth.williams.jx@...esas.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Wolfram Sang <wsa@...-dreams.de>,
        Jarkko Nikula <jarkko.nikula@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>
Cc:     Gareth Williams <gareth.williams.jx@...esas.com>,
        devicetree@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 0/2] i2c: designware: Add support for a bus clock

The Synopsys I2C Controller has a bus clock that some SoCs require to access
the registers. This series also details the new clock property in the bindings
documentation.

v3:
 - busclk renamed to pclk.
 - Added comment with dw_i2c_dev struct definition describing pclk.
 - Added enable rollback of first clock if second fails to enable.
 - Changed clocks and clock-names sections to use term "peripheral clock"
   (pclk) instead of "bus clock" (busclk) in dt-bindings documentation.
v2:
 - Use new devm_clk_get_optional() function as it simplifies handling when
   the optional clock is not present.

Phil Edworthy (2):
  dt: snps,designware-i2c: Add clock bindings documentation
  i2c: designware: Add support for a bus clock

 .../devicetree/bindings/i2c/i2c-designware.txt         |  9 +++++++++
 drivers/i2c/busses/i2c-designware-common.c             | 18 ++++++++++++++++--
 drivers/i2c/busses/i2c-designware-core.h               |  2 ++
 drivers/i2c/busses/i2c-designware-platdrv.c            |  5 +++++
 4 files changed, 32 insertions(+), 2 deletions(-)

-- 
2.7.4