Commit Graph

4 Commits

Author SHA1 Message Date
Michael Lee
60ccfbbad0 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>
2016-06-20 11:45:44 +02:00
John Crispin
b180f24a3b Revert "ramips: update i2c drivers"
This reverts commit d8202a8409.

the commit broke I2C on various boards.

Signed-off-by: John Crispin <john@phrozen.org>
2016-06-17 04:13:07 +02:00
Michael Lee
d8202a8409 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>
2016-06-13 22:51:42 +02:00
Felix Fietkau
d041e8b44b ramips: add linux 4.4 support, update mt7621 subtarget to 4.4
Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 48951
2016-03-07 16:33:34 +00:00