On 07/06/2017 10:57 AM, Dmitry Osipenko wrote:
On 06.07.2017 19:38, Stephen Warren wrote:
On 07/05/2017 11:19 AM, Dmitry Osipenko wrote:
Override the compatible string of the first USB controller to enable
device mode.
diff --git a/arch/arm/boot/dts/tegra20-paz00.dts
b/arch/arm/boot/dts/tegra20-paz00.dts
usb@c5000000 {
+ compatible = "nvidia,tegra20-udc";
status = "okay";
+ dr_mode = "otg";
};
This port is the only external USB port on the AC100.
Seems that's not true. http://elinux.org/Tegra/Boards/Toshiba_AC100 claims that
there are host and micro USB ports.
You're right; I was getting this board confused with the Springbank
variety of Seaboard, and when I looked at the mini USB port on the AC100
I thought it was something else.
Given the physical connector on this USB port on the AC100, it's
probably fine to convert it to device-mode only since I don't expect
anyone has a USB OTG cable that has a mini size connector on the host end.
It looks like this port is only enabled because the very first version
of tegra-paz00.dts didn't explicitly disable the port, and when
tegra20.dtsi was updated to disable all USB ports by default,
tegra-paz00.dtsi was updated to enable the port so that the DT change
didn't affect behaviour, which then left the port enabled explicitly
albeit without much reason.
So, once the dr_mode is fixed in this change, it's:
Acked-by: Stephen Warren <swarren@xxxxxxxxxx>
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
