1. 12 Sep, 2016 1 commit
    • Hans de Goede's avatar
      iio: accel: mxc6255: Fix chip-id check · 1696566f
      Hans de Goede authored
      The initial commit adding support for the mxc6225 assumed the
      mxc6225 has a chip-id of 0xe5 based on testing on a single Allwinner
      A23 tablet with a mxc6225. Testing on a bunch of other Allwinner
      tablets have shown that the chip-id for the mxc6225 is not constant.
      A datasheet for the MXC6255 which I've found online says that bits
      7 and 6 of the chip-id register are undefined (for the mxc6255), testing
      on 5 different tablets with a mxc6225 has found the following ids:
      0x25, 0x45, 0x65, 0x85, 0xe5. So it seems that for the mxc6225 bits
      7, 6 and 5 of the chip-id register are undefined.
      This commit adjusts the chip-id check so that the mxc6255 driver
      properly recognizes the mxc6225 in all these tablets.
      Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
      Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
  2. 05 Sep, 2016 1 commit
  3. 25 Oct, 2015 1 commit