Thanks Michal,
I will test proposed solution and will post the results.
But in general I prefer to get full USB OTG functionality.
For the moment:
root@egpr:~# cat /boot/config-4.5.2-sunxi | grep CONFIG_USB_MUSB_HOST
# CONFIG_USB_MUSB_HOST is not set
and:
usb@01c13000 {
compatible = "allwinner,sun4i-a10-musb";
reg = <0x1c13000 0x400>;
clocks = <0x3 0x0>;
interrupts = <0x0 0x26 0x4>;
interrupt-names = "mc";
phys = <0x23 0x0>;
phy-names = "usb";
extcon = <0x23 0x0>;
allwinner,sram = <0x24 0x1>;
status = "okay";
dr_mode = "host";
};
phy@01c13400 {
#phy-cells = <0x1>;
compatible = "allwinner,sun7i-a20-usb-phy";
reg = <0x1c13400 0x10 0x1c14800 0x4 0x1c1c800 0x4>;
reg-names = "phy_ctrl", "pmu1", "pmu2";
clocks = <0x25 0x8>;
clock-names = "usb_phy";
resets = <0x25 0x0 0x25 0x1 0x25 0x2>;
reset-names = "usb0_reset", "usb1_reset",
"usb2_reset";
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <0x26 0x27>;
usb0_id_det-gpio = <0x1e 0x7 0x4 0x0>;
usb0_vbus_det-gpio = <0x1e 0x7 0x5 0x0>;
usb0_vbus-supply = <0x28>;
usb1_vbus-supply = <0x29>;
usb2_vbus-supply = <0x2a>;
linux,phandle = <0x23>;
phandle = <0x23>;
};
pinctrl@01c20800 {
...
usb0_id_detect_pin@0 {
allwinner,pins = "PH4";
allwinner,function = "gpio_in";
allwinner,drive = <0x0>;
allwinner,pull = <0x1>;
linux,phandle = <0x26>;
phandle = <0x26>;
};
usb0_vbus_detect_pin@0 {
allwinner,pins = "PH5";
allwinner,function = "gpio_in";
allwinner,drive = <0x0>;
allwinner,pull = <0x2>;
linux,phandle = <0x27>;
phandle = <0x27>;
};
};
...
usb0-vbus {
compatible = "regulator-fixed";
pinctrl-names = "default";
pinctrl-0 = <0x3d>;
regulator-name = "usb0-vbus";
regulator-min-microvolt = <0x4c4b40>;
regulator-max-microvolt = <0x4c4b40>;
enable-active-high;
gpio = <0x1e 0x2 0x11 0x0>;
status = "okay";
linux,phandle = <0x28>;
phandle = <0x28>;
};
sorry for the above code but I have used re-compiled dtb file for testing
purposes.
Best regards
Chris
On Wednesday, May 4, 2016 at 1:26:14 PM UTC+3, Michal Suchanek wrote:
>
> On 14 September 2015 at 22:25, Maxime Ripard
> <maxime...@free-electrons.com <javascript:>> wrote:
> > On Thu, Sep 10, 2015 at 08:38:38PM +0200, Hans de Goede wrote:
> >> Hi,
> >>
> >> On 10-09-15 20:30, Maxime Ripard wrote:
> >> >On Thu, Sep 10, 2015 at 08:23:23PM +0200, Hans de Goede wrote:
> >> >>Hi,
> >> >>
> >> >>On 04-09-15 08:43, Olliver Schinagl wrote:
> >> >>>Hey Hans,
> >> >>>
> >> >>>On 07-08-15 10:45, Olliver Schinagl wrote:
> >> >>>><snip>
> >> >>>>>If you change the dr_mode to host then you _must_ also remove any
> id_det and vbus_det
> >> >>>>>gpio settings from the usb_phy node in the dts, as the sun4i phy
> code detects
> >> >>>>>host vs otg mode by checking for the presence of these.
> >> >>>>Yes, this fixes it and makes it work. Thanks.
> >> >>>>
> >> >>>I've been going back to this and am wondering if this is something I
> can look into to fix properly? E.g. if the dts sets dr_mode = host, can we
> simply ignore the pins and treat them as unset?
> >> >>
> >> >>AFAIK you cannot unset something in dts. The only solution I
> >> >>can comeup with is to add a dr_mode argument to the phy like
> >> >>we already have for the otg controller itself.
> >> >>
> >> >>This is something which we likely need to do anyways to add
> >> >>support for peripheral only mode, which we seem to need for
> >> >>some "hdmi sticks".
> >> >
> >> >I haven't really followed the rest of the discussion, so sorry if you
> >> >already talked about that, but why can't you just set the dr_mode to
> >> >peripheral in such a case?
> >>
> >> This is about the usbphy code not the musb-controller code, which are
> >> 2 different dts nodes, atm only the musb-controller node has a
> >> dr_mode property, and the phy code decides between host-only
> >> and otg mode based on whether an id pin is assigned or not.
> >>
> >> My proposal is to get rid of the id-pin hack to determine the mode
> >> and add a dr_mode property to the usbphy dts node.
> >
> > I agree that we should get rid of that hack, especially since a lack
> > of an ID pin might also be used on a peripheral-only device.
> >
> > However, we already have that information in the musb node, and
> > duplicating the info seems error prone. We already have a custom
> > function, maybe that's a case for another one, and that would allow to
> > handle "hard" cases more easily (like CONFIG_USB_MUSB_HOST selected,
> > with the otg node set to otg).
> >
>
> Hello,
>
> was this solved somehow?
>
> What problem is there with referencing the phy node?
>
> Just like pinmux setting nodes and whatnot it can be named and
> referenced by name.
>
> Thanks
>
> Michal
>
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