Hi Doug,
Am Mittwoch, 30. Juli 2014, 08:13:52 schrieb Doug Anderson:
> On Wed, Jul 30, 2014 at 4:24 AM, Heiko Stübner <heiko@xxxxxxxxx> wrote:
> > 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 <dianders@xxxxxxxxxxxx>
> >> ---
> >>
> >> 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 It seems I have a slightly outdated schematics pdf for the evb ...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.
>
> I have schematics that claim to be from January 25, 2014 and claim to
> be rev 1.0. On my schematics:
>
> * GPIO0_B4 (12) = OTG_VBUS_DRV = pin 233 of the mainboard connector
> * GPIO0_B6 (14) = HOST_VBUS_DRV = pin 239 of the mainboard connector
>
> On the mainboard schematics I have the OTG signal (233) doesn't
> actually go to the OTG port. It goes to a debug header and nowhere
> else. The HOST VBUS controls VBUS on both of the two "host" ports.
>
> > 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.
>
> I did! ;) ...but I matched my schematics, not yours. Can you
> provide the date / version number from your schematics and we can see
> which is newer? Just for reference I was emailed schematics last week
> but that doesn't necessarily guarantee that they're the newest ones.
the schematics I have is "RK3288_BETA", REV 0.2, created in 2014/02/12, last
changed on 2014/03/04.
At least in my schematics on page 16 of 44, the OTG_VBUS_DRV pin leads to a
switch, that gets supplied by VCC50_BOOST and emits the VCC50_USB .
So, a later phy node should in the otg case probably have a
whatever-supply = <&vcc50_usb>;
and not
whatever-supply = <&usb_otg_vbus_regulator>
And there I'd guess the host supply will probably be structured similarly -
even if I can't see it right now :-) .
> Given the above, I'm not planning to spin this patch unless you
> confirm you want me to. Thanks! :)
I'd like the regulator handle to be named after the supply name, not after the
pin-name :-) .
Heiko
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