Hi Heiko:


On 2017年08月13日 20:13, Heiko Stuebner wrote:

Hi Andy,

Am Freitag, 11. August 2017, 11:46:51 CEST schrieb Andy Yan:

quoted

Add saradc device tree node for rv1108 soc

Signed-off-by: Andy Yan <redacted>

+	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?

     Sorry, I just copied it from the downstream dts. After checked with 
David, he suggested that we could remove it.

Heiko

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