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authorMichael Lee <igvtee@gmail.com>2016-01-07 21:50:24 +0800
committerJohn Crispin <john@phrozen.org>2016-06-13 22:51:42 +0200
commitd8202a84096831d4e6e2a522476bd6a0d46e6413 (patch)
tree5fdd246cb15134f4a4c8030d1bb3235d2cfbaa29 /target/linux/xburst
parentf36d624d88f962b12a7c819d456590d6b0a9ee24 (diff)
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ramips: update i2c drivers
* add rt_i2c structure to store driver data * rewrite read/write check function and add i2c error status check. so we don't need to wait until time out. * add 10 bits address support. according to the data sheet i think it is possible. but i haven't verify it. * the most important is start transfer only need once. otherwise it cause I2C_STARTERR status. * add set i2c clock speed register by dts options "clock-frequency". not just hard code it. * add mt7621 i2c driver. i just copy i2c-ralink.c and change register names. and the hardware don't support error status. so i remove it. but the logic is the same. Signed-off-by: Michael Lee <igvtee@gmail.com>
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