On Wed, May 11, 2016 at 06:11:36PM +0530, Sanchayan Maity wrote:
> Use USBC_DET feature of standard Colibri SODIMM pin 137 for USB
> device/host switching using the generic extcon USB gpio implementation.
>
> Signed-off-by: Sanchayan Maity <[email protected]>
> ---
> arch/arm/boot/dts/vf-colibri-eval-v3.dtsi | 12 ++++++++++++
> arch/arm/boot/dts/vf-colibri.dtsi | 7 +++++++
> 2 files changed, 19 insertions(+)
>
> diff --git a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
> b/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
> index a8a8e43..a012f80 100644
> --- a/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
> +++ b/arch/arm/boot/dts/vf-colibri-eval-v3.dtsi
> @@ -50,6 +50,14 @@
> clock-frequency = <16000000>;
> };
>
> + extcon_usbc_det: usbc_det {
> + compatible = "linux,extcon-usb-gpio";
> + debounce = <25>;
> + id-gpio = <&gpio3 6 GPIO_ACTIVE_HIGH>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_usbc_det>;
> + };
> +
> panel: panel {
> compatible = "edt,et057090dhu";
> backlight = <&bl>;
> @@ -162,6 +170,10 @@
> status = "okay";
> };
>
> +&usbdev0 {
> + extcon = <&extcon_usbc_det>, <&extcon_usbc_det>;
> +};
> +
I still not understand why vbus needs id-extcon too? Per my understand,
this pin will not be changed between connects to pc and disconnects to
pc.
> &usbh1 {
> vbus-supply = <®_usbh_vbus>;
> };
> diff --git a/arch/arm/boot/dts/vf-colibri.dtsi
> b/arch/arm/boot/dts/vf-colibri.dtsi
> index b741709..a7a3e88 100644
> --- a/arch/arm/boot/dts/vf-colibri.dtsi
> +++ b/arch/arm/boot/dts/vf-colibri.dtsi
> @@ -174,6 +174,7 @@
>
> &usbdev0 {
> disable-over-current;
> + dr_mode = "otg";
> status = "okay";
> };
>
> @@ -362,6 +363,12 @@
> >;
> };
>
> + pinctrl_usbc_det: gpio_usbc_det {
> + fsl,pins = <
> + VF610_PAD_PTC29__GPIO_102 0x22ed
> + >;
> + };
> +
> pinctrl_usbh1_reg: gpio_usb_vbus {
> fsl,pins = <
> VF610_PAD_PTD4__GPIO_83 0x22ed
> --
> 2.8.2
>
> --
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--
Best Regards,
Peter Chen
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