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1* Freescale MXS LRADC device driver2 3Required properties:4- compatible: Should be "fsl,imx23-lradc" for i.MX23 SoC and "fsl,imx28-lradc"5 for i.MX28 SoC6- reg: Address and length of the register set for the device7- interrupts: Should contain the LRADC interrupts8 9Optional properties:10- fsl,lradc-touchscreen-wires: Number of wires used to connect the touchscreen11 to LRADC. Valid value is either 4 or 5. If this12 property is not present, then the touchscreen is13 disabled. 5 wires is valid for i.MX28 SoC only.14- fsl,ave-ctrl: number of samples per direction to calculate an average value.15 Allowed value is 1 ... 32, default is 416- fsl,ave-delay: delay between consecutive samples. Allowed value is17 2 ... 2048. It is used if 'fsl,ave-ctrl' > 1, counts at18 2 kHz and its default is 2 (= 1 ms)19- fsl,settling: delay between plate switch to next sample. Allowed value is20 1 ... 2047. It counts at 2 kHz and its default is21 10 (= 5 ms)22 23Example for i.MX23 SoC:24 25 lradc@80050000 {26 compatible = "fsl,imx23-lradc";27 reg = <0x80050000 0x2000>;28 interrupts = <36 37 38 39 40 41 42 43 44>;29 fsl,lradc-touchscreen-wires = <4>;30 fsl,ave-ctrl = <4>;31 fsl,ave-delay = <2>;32 fsl,settling = <10>;33 };34 35Example for i.MX28 SoC:36 37 lradc@80050000 {38 compatible = "fsl,imx28-lradc";39 reg = <0x80050000 0x2000>;40 interrupts = <10 14 15 16 17 18 19 20 21 22 23 24 25>;41 fsl,lradc-touchscreen-wires = <5>;42 fsl,ave-ctrl = <4>;43 fsl,ave-delay = <2>;44 fsl,settling = <10>;45 };46