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From: Wolfram Sang <wsa@the-dreams.de>
To: linux-i2c@vger.kernel.org
Cc: linux-sh@vger.kernel.org, Magnus Damm <magnus.damm@gmail.com>,
	Simon Horman <horms@verge.net.au>,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	Wolfram Sang <wsa@the-dreams.de>,
	linux-pm@vger.kernel.org
Subject: [RFC 0/3] i2c: rcar: adapt PM usage to multi master case
Date: Wed, 16 Dec 2015 18:44:17 +0000	[thread overview]
Message-ID: <1450291460-10514-1-git-send-email-wsa@the-dreams.de> (raw)

If we are in a multi-master scenario, we need to block runtime PM so the
arbitration circuit stays awake.

So, we define a new binding and adapt the i2c-rcar driver to have an example
implementation.

This series is RFC because I want to do some more regression testing. The
actual functionality works fine here on my Lager board.

Wolfram Sang (3):
  i2c: document binding for multi-master case
  i2c: rcar: remove macros dealing with flags
  i2c: rcar: disable PM in multi-master mode

 Documentation/devicetree/bindings/i2c/i2c.txt |  5 ++++
 drivers/i2c/busses/i2c-rcar.c                 | 39 ++++++++++++++++-----------
 2 files changed, 28 insertions(+), 16 deletions(-)

-- 
2.1.4


             reply	other threads:[~2015-12-16 18:44 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-16 18:44 Wolfram Sang [this message]
2015-12-16 18:44 ` [RFC 1/3] i2c: document binding for multi-master case Wolfram Sang
2015-12-19  4:18   ` Rob Herring
2015-12-16 18:44 ` [RFC 2/3] i2c: rcar: remove macros dealing with flags Wolfram Sang
2015-12-16 18:44 ` [RFC 3/3] i2c: rcar: disable PM in multi-master mode Wolfram Sang
2015-12-16 18:48   ` Sergei Shtylyov
2015-12-16 21:26 ` [RFC 0/3] i2c: rcar: adapt PM usage to multi master case Geert Uytterhoeven

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