On Mon, 22 Nov 2021 10:11:32 +0100 Maxime Ripard <maxime@xxxxxxxxxx> wrote: > On Fri, Nov 19, 2021 at 10:14:54PM +0300, Evgeny Boger wrote: > > R40 SoC has touchscreen controller also serving as general-purpose ADC. > > The hardware is very similar to A31, except that R40 has separate > > calibrated thermal sensor IP (handled by sun8i_thermal). > > > > Despite the temperature sensor in the RTP is never mentioned in > > the R40 family user manuals, it appears to be working. However, > > it's not very useful as it lacks calibration data and there is another > > fully functioning temperature sensor anyway. > > > > This patch disables the temperature sensor in RTP/GPADC IP on R40. > > > > The reason for disabling the temperature sensor is that the IP > > needs to be switched back and forth between RTP and GPADC modes for > > temperature measurements. Not only this introduces delays, but it also > > disturbs external circuitry by injecting current into ADC inputs. > > > > Signed-off-by: Evgeny Boger <boger@xxxxxxxxxxxxxx> > > Acked-by: Maxime Ripard <maxime@xxxxxxxxxx> +Cc linux-iio@xxxxxxxxxxxxxxx I'm fine with this and assuming Lee is happy to pick it up + send me an immutable branch in case anything crosses with it this cycle.. Acked-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> Thanks, Jonathan > > Maxime >
