Messages in this thread | | | Date | Tue, 02 Jul 2013 16:06:19 +0200 | From | Alexandre Belloni <> | Subject | Re: [PATCHv3 2/3] ARM: mxs: cfa10049: Switch bus i2c1 to bitbanging |
| |
On 02/07/2013 13:50, Alexandre Belloni wrote: > On 02/07/2013 13:45, Fabio Estevam wrote: > >> Shouldn't this be >> >> i2c@1 { >> reg = <1>; ? >> > > No, we have 4 devices on that mux and 2 pins to select the muxing. >
OK, got it working.
So, the results:
bitbanging:
# time cat /sys/bus/iio/devices/iio\:device1/in_voltage0_raw 2637 real 0m 0.09s user 0m 0.01s sys 0m 0.01s
i2c-mxs PIO mode:
# time cat /sys/bus/iio/devices/iio\:device1/in_voltage0_raw [ 35.007650] [sched_delayed] sched: RT throttling activated 2627 real 0m 7.14s user 0m 0.02s sys 0m 0.01s
i2c-mxs PIO mode without LRADC:
# time cat /sys/bus/iio/devices/iio\:device1/in_voltage0_raw [ 18.007432] [sched_delayed] sched: RT throttling activated 2629 real 0m 7.09s user 0m 0.00s sys 0m 0.03s
i2c-mxs DMA mode:
# time cat /sys/bus/iio/devices/iio\:device1/in_voltage0_raw 2631 real 0m 0.12s user 0m 0.01s sys 0m 0.01s
It seems fine for me.
-- Alexandre Belloni, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com
| |