Hi Andy, Am Freitag, 11. August 2017, 11:46:51 CEST schrieb Andy Yan: > Add saradc device tree node for rv1108 soc > > Signed-off-by: Andy Yan <andy.yan@xxxxxxxxxxxxxx> > > + adc: adc@1038c000 { > + compatible = "rockchip,rv1108-saradc", "rockchip,rk3399-saradc"; > + reg = <0x1038c000 0x100>; > + interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>; > + #io-channel-cells = <1>; > + io-channel-ranges; What do you need the io-channel-ranges for? I.e. according to the documenation it is meant for when the adc is also a "bus node" and has children that should inherit channels from it. In all saradc uses so far we only have separate nodes referencing the adc controller (like adc-keys etc), so this does not look like it is needed? Heiko -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html