From: Fabio Estevam <festevam@xxxxxxxxx> Sent: Wednesday, November 04, 2015 12:01 AM
> To: Duan Fugang-B38611
> Cc: Jonathan Cameron; linux-iio@xxxxxxxxxxxxxxx
> Subject: Re: vf610_adc: Division by zero
>
> On Tue, Nov 3, 2015 at 1:26 PM, Fabio Estevam <festevam@xxxxxxxxx> wrote:
> > Hi Andy,
> >
> > Enabling vf610-adc in a imx6sx dts file causes the following error:
>
> Ok, passing fsl,adck-max-frequency in the dtsi avoids the issue:
>
> --- a/arch/arm/boot/dts/imx6sx.dtsi
> +++ b/arch/arm/boot/dts/imx6sx.dtsi
> @@ -1152,6 +1152,8 @@
> interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>;
> clocks = <&clks IMX6SX_CLK_IPG>;
> clock-names = "adc";
> + fsl,adck-max-frequency = <30000000>, <40000000>,
> + <20000000>;
> status = "disabled";
> };
>
> @@ -1161,6 +1163,8 @@
> interrupts = <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
> clocks = <&clks IMX6SX_CLK_IPG>;
> clock-names = "adc";
> + fsl,adck-max-frequency = <30000000>, <40000000>,
> + <20000000>;
> status = "disabled";
> };
>
> ,but we still should better add some default frequencies in case 'adck-
> max-frequency' property is absent.
You are right, I will submit one patch for this.
Regrads.
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