Am Dienstag, 29. Juli 2014, 16:24:31 schrieb Doug Anderson:
> There is no phy driver that works on the Rockchip board for either USB
> host port yet. For now just hardcode the vbus signal to be on all the
> time which makes both the dwc2 host and the EHCI port work.
>
> Signed-off-by: Doug Anderson <diand...@chromium.org>
> ---
> arch/arm/boot/dts/rk3288-evb.dtsi | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
>
> diff --git a/arch/arm/boot/dts/rk3288-evb.dtsi
> b/arch/arm/boot/dts/rk3288-evb.dtsi index 749e20d..efd625e 100644
> --- a/arch/arm/boot/dts/rk3288-evb.dtsi
> +++ b/arch/arm/boot/dts/rk3288-evb.dtsi
> @@ -35,6 +35,18 @@
> debounce-interval = <100>;
> };
> };
> +
> + /* This turns on vbus for both host0 (ehci) and host1 (dwc2) */
> + usb_host_vbus_regulator: usb-host-vbus-regulator {
> + compatible = "regulator-fixed";
> + enable-active-high;
> + gpio = <&gpio0 14 GPIO_ACTIVE_HIGH>;
> + pinctrl-names = "default";
> + pinctrl-0 = <&usb_host_vbus>;
> + regulator-name = "usb-host-vbus";
> + regulator-always-on;
> + regulator-boot-on;
> + };
> };
It seems I have a slightly outdated schematics pdf for the evb ... and only
see the OTG vbus pin, on <&gpio0 12>, but am missing the whole host vbus.
Could you think about finding another name for the handle? For example, in my
incomplete evb-schematics the supply coming from the otg regulator is called
vcc50_usb and there should be something similar for the host supply, so I'd
like something like
vcc50_usbhost: usb-host-vbus-regulator { /* or whatever it gets called
*/
...
};
simply to keep with the supply names defined in the schematics - makes reading
easier.
Heiko
>
> &i2c0 {
> @@ -71,4 +83,10 @@
> rockchip,pins = <0 5 RK_FUNC_GPIO &pcfg_pull_up>;
> };
> };
> +
> + usb-host {
> + usb_host_vbus: usb-host-vbus {
> + rockchip,pins = <0 14 RK_FUNC_GPIO &pcfg_pull_none>;
> + };
> + };
> };
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