On 02/14/2020 13:24, Jonathan Cameron wrote: > So ideally we'd get someone at Freescale to confirm there is a hardware > rather than a documentation issue (i.e. maybe we need some other magic). NXP says there's a documentation issue. CTRL_REG6 can only be written when the device is in standby, similar to the other CTRL_REG* registers. So I'll need to use mma8452_change_config to set this register. I will try this out and send a patch. One other detail - the temperature cannot be buffered by the hwfifo. If I add hwfifo support, I think the right thing to do would be to disable hwfifo implicitly if the temperature channel is enabled and fall back to one interrupt per sample. -- Dylan
