From: Biju Das <biju.das@bp.renesas.com>
To: Rob Herring <robh+dt@kernel.org>, Mark Rutland <mark.rutland@arm.com>
Cc: Wolfram Sang <wsa@the-dreams.de>,
Simon Horman <horms@verge.net.au>,
Magnus Damm <magnus.damm@gmail.com>,
Chris Paterson <chris.paterson2@renesas.com>,
devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
linux-i2c@vger.kernel.org, Biju Das <biju.das@bp.renesas.com>
Subject: [PATCH 0/2] Use demuxer for i2c1 and i2c5
Date: Mon, 22 Jan 2018 11:29:21 +0000 [thread overview]
Message-ID: <1516620563-7965-1-git-send-email-biju.das@bp.renesas.com> (raw)
We have observed that on iWave RZ/G1E boards, randomly HDMI slave device
is holding data line after a soft reboot.
We applied demuxer patch for i2c1 and using an oscilloscope verified that
i2c recovery works on the failure condition.
This patch depends on the below patch set
https://patchwork.ozlabs.org/cover/857505/
it is tested against renesas-devel-20180122-v4.15-rc9
Biju Das (2):
ARM: dts: iwg22d-sodimm-dbhd-ca: use demuxer for I2C1
ARM: dts: iwg22d-sodimm: use demuxer for I2C5
.../arm/boot/dts/r8a7745-iwg22d-sodimm-dbhd-ca.dts | 96 +++++++++++++---------
arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts | 44 +++++++---
2 files changed, 92 insertions(+), 48 deletions(-)
--
2.7.4
next reply other threads:[~2018-01-22 11:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-22 11:29 Biju Das [this message]
2018-01-22 11:29 ` [PATCH vY 1/2] ARM: dts: iwg22d-sodimm-dbhd-ca: use demuxer for I2C1 Biju Das
2018-01-22 11:29 ` [PATCH vY 2/2] ARM: dts: iwg22d-sodimm: use demuxer for I2C5 Biju Das
2018-01-22 11:40 ` [PATCH 0/2] Use demuxer for i2c1 and i2c5 Wolfram Sang
2018-01-22 11:55 ` Biju Das
2018-01-22 12:22 ` Wolfram Sang
2018-01-22 14:03 ` Biju Das
2018-01-22 14:03 ` Biju Das
2018-01-22 14:08 ` Wolfram Sang
2018-01-23 13:39 ` Biju Das
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