Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.kernel > #1280792

RE: [PATCH v2 2/2] i2c: mediatek: fix i2c multi transfer issue in high speed mode

From Liguo Zhang (张立国) <Liguo.Zhang@mediatek.com>
Newsgroups linux.kernel
Subject RE: [PATCH v2 2/2] i2c: mediatek: fix i2c multi transfer issue in high speed mode
Date 2015-12-01 12:30 +0100
Message-ID <qARia-ww-3@gated-at.bofh.it> (permalink)
References <qsNv4-2fT-17@gated-at.bofh.it> <qsNv4-2fT-15@gated-at.bofh.it> <quK9H-5bz-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

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--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next | Find similar | Unroll thread


Thread

RE: [PATCH v2 2/2] i2c: mediatek: fix i2c multi transfer issue in  high speed mode Liguo Zhang (张立国)   <Liguo.Zhang@mediatek.com> - 2015-12-01 12:30 +0100

csiph-web