Copy more DT folks and lists, as I want to make sure everyone agrees on
how the fixed regulators should organized in the device tree sources,
before I apply the patch.
On Sun, Jan 26, 2014 at 01:39:31PM +0800, Fugang Duan wrote:
> vf610 has two ADC controllers, and vf610-twr board ADC0_SE5 pin connect
> to sliding rheostat for ADC test, other ADC pins connect to connectors for
> future use.
>
> Add support for ADC0_SE5.
>
> CC: Shawn Guo <shawn.guo@xxxxxxxxxx>
> CC: Jonathan Cameron <jic23@xxxxxxxxxx>
> CC: Mark Rutland <mark.rutland@xxxxxxx>
> CC: Otavio Salvador <otavio@xxxxxxxxxxxxxxxx>
> CC: Peter Meerwald <pmeerw@xxxxxxxxxx>
> CC: Lars-Peter Clausen <lars@xxxxxxxxxx>
> Signed-off-by: Fugang Duan <B38611@xxxxxxxxxxxxx>
> ---
> arch/arm/boot/dts/vf610-twr.dts | 21 +++++++++++++++++++++
> arch/arm/boot/dts/vf610.dtsi | 26 ++++++++++++++++++++++++++
> 2 files changed, 47 insertions(+), 0 deletions(-)
>
> diff --git a/arch/arm/boot/dts/vf610-twr.dts b/arch/arm/boot/dts/vf610-twr.dts
> index c8047ca..d867be3 100644
> --- a/arch/arm/boot/dts/vf610-twr.dts
> +++ b/arch/arm/boot/dts/vf610-twr.dts
> @@ -34,6 +34,27 @@
> };
> };
>
> + regulators {
> + compatible = "simple-bus";
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + reg_vcc_3v3_mcu: regulator@0 {
> + compatible = "regulator-fixed";
> + reg = <0>;
> + regulator-name = "vcc_3v3_mcu";
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> + };
> + };
Per discussion [1], Mark Rutland suggests that instead of organizing
the fixed regulator nodes in a simple-bus container, it should be put
under root node directly like below.
/ {
reg_vcc_3v3_mcu: regulator_0 {
compatible = "regulator-fixed";
regulator-name = "vcc_3v3_mcu";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
};
};
Is this what all DT folks agree on? At least the node name should be
'regulator-0' since it's more idiomatic to use '-' than '_' in node
name?
Shawn
[1] http://thread.gmane.org/gmane.linux.drivers.devicetree/61467/focus=300895
> +
> +};
> +
> +&adc0 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_adc0_ad5>;
> + vref-supply = <®_vcc_3v3_mcu>;
> + status = "okay";
> };
>
> &dspi0 {
> diff --git a/arch/arm/boot/dts/vf610.dtsi b/arch/arm/boot/dts/vf610.dtsi
> index d31ce1b..b5b21ea 100644
> --- a/arch/arm/boot/dts/vf610.dtsi
> +++ b/arch/arm/boot/dts/vf610.dtsi
> @@ -152,6 +152,15 @@
> clock-names = "pit";
> };
>
> + adc0: adc@4003b000 {
> + compatible = "fsl,vf610-adc";
> + reg = <0x4003b000 0x1000>;
> + interrupts = <0 53 0x04>;
> + clocks = <&clks VF610_CLK_ADC0>;
> + clock-names = "adc";
> + status = "disabled";
> + };
> +
> wdog@4003e000 {
> compatible = "fsl,vf610-wdt", "fsl,imx21-wdt";
> reg = <0x4003e000 0x1000>;
> @@ -178,6 +187,14 @@
>
> /* functions and groups pins */
>
> + adc0 {
> + pinctrl_adc0_ad5: adc0_ad5 {
> + fsl,pins = <
> + VF610_PAD_PTC30__ADC0_SE5 0xa1
> + >;
> + };
> + };
> +
> dcu0 {
> pinctrl_dcu0_1: dcu0grp_1 {
> fsl,pins = <
> @@ -450,6 +467,15 @@
> status = "disabled";
> };
>
> + adc1: adc@400bb000 {
> + compatible = "fsl,vf610-adc";
> + reg = <0x400bb000 0x1000>;
> + interrupts = <0 54 0x04>;
> + clocks = <&clks VF610_CLK_ADC1>;
> + clock-names = "adc";
> + status = "disabled";
> + };
> +
> fec0: ethernet@400d0000 {
> compatible = "fsl,mvf600-fec";
> reg = <0x400d0000 0x1000>;
> --
> 1.7.2.rc3
>
>
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