Hi, On 30/08/2021 21:37, Martin Blumenstingl wrote: > Hi Neil, > > On Mon, Aug 30, 2021 at 9:45 AM Neil Armstrong <narmstrong@xxxxxxxxxxxx> wrote: >> >> Hi, >> >> On 17/08/2021 06:15, Anand Moon wrote: >>> Add missing usb phy power node for usb node fix below warning. >>> P5V0 regulator supply input voltage range to USB host controller. >>> As described in the C1+ schematics, GPIO GPIOAO_5 is used to >>> enable input power to USB ports, set it to Active Low. >>> >>> [ 1.260772] dwc2 c90c0000.usb: Looking up vbus-supply from device tree >>> [ 1.260784] dwc2 c90c0000.usb: Looking up vbus-supply property in >>> mode /soc/usb@c90c0000 failed >> >> First of all, DT is not here to fix boot message. > Anand mentioned elsewhere that this is a debug/info message > >> Finally, I looked at the Odroid-C1 schematics and the GPIOAO.BIT5 is an input >> to the S805, and the PWREN signal is controlled by the USB Hub so this regulator >> should not be added at all. > I think there's a misunderstanding because there's two PWREN signals > with different meanings. > The PWREN signal for the USB host ports is hard-wired and not > connected to the SoC at all. > The PWREN signal for the Micro-USB port (which Anand is adding here) > is controlled by GPIOAO_5. odroid-c1+_rev0.4_20150615.pdf [0] shows it > as an input to "USB_OTG" on page 1. "USB_OTG" consists of a power > switch and the connector itself as shown on page 28. > > Personally I think that the change from Anand itself is good. > If you feel otherwise then please speak up. Ok thanks for the clarification, then the change is ok, but not the commit message. >> Add missing usb phy power node for usb node fix below warning. is not a good reason for a DT change. A proper reason should be added. And the commit message doesn't specify the change is for the Micro-USB port, this should be clarified. Neil > As I pointed out three smaller changes I am hoping that Anand will > re-send the updated patch anyways. At that point he can also add the > changes from your feedback. > > > Best regards, > Martin > > > [0] https://dn.odroid.com/S805/Schematics/odroid-c1+_rev0.4_20150615.pdf >
