Hi Martin, On Mon, 4 Feb 2019 at 19:21, Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> wrote: > > Hi Anand, > > On Wed, Jan 23, 2019 at 4:12 PM Anand Moon <linux.amoon@xxxxxxxxx> wrote: > > > > This is follow up on my previous patches. > > > > [0] https://lore.kernel.org/patchwork/patch/1031616/ > > [1] https://lore.kernel.org/patchwork/patch/1031617/ > > > > As per Martin's suggestion and input I have tried to fix below issue. > > > > Fixed the phy power issue on the usb port. > > # cat /sys/kernel/debug/regulator/regulator_summary > > USB_VBUS 4 2 0 unknown 5000mV 0mA 5000mV 5000mV > > phy-c1108820.phy.1 2 0mA 0mV 0mV > > phy-c1108800.phy.0 2 0mA 0mV 0mV > > > > Fixed the OTG phy warning and initilizaion of usb0_phy > > # lsusb -t > > /: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=dwc2/1p, 480M > > |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M > > |__ Port 1: Dev 5, If 0, Class=Mass Storage, Driver=usb-storage, 480M > > |__ Port 2: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 480M > > |__ Port 3: Dev 4, If 1, Class=Video, Driver=uvcvideo, 480M > > |__ Port 3: Dev 4, If 2, Class=Audio, Driver=snd-usb-audio, 480M > > |__ Port 3: Dev 4, If 0, Class=Video, Driver=uvcvideo, 480M > > |__ Port 3: Dev 4, If 3, Class=Audio, Driver=snd-usb-audio, 480M > > /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=dwc2/1p, 480M > > > > Now hotpluing of usb device is working on odroid c1+ boards. > unfortunately it's still not working for me :( > > all following descriptions are seen when looking at the PCB with the > 40-pin connector on the bottom, USB ports on the left, micro USB > connector on the top right. > > my test-case is: > - power-cycle the board > - enter u-boot command prompt > - gset GPIOAO_5 out high (or replace high with low) > - measure > > I checked the voltage at RT9715EGB (U19) with a volt meter: > GPIOAO_5 HIGH: > - EN pin (bottom, left): 3.3V > - VOUT pin (top right): 5V > GPIOAO_5 LOW: > - EN pin (bottom, left). 0V > - VOUT pin (top right): 5V (not sure why...) > > I also checked the voltage at Q5 2N7002W with a volt meter: > - gate (bottom, right): 0V > - source (top, right): 3.3V > - drain (left): 0V > this is always the same, regardless of whether GPIOAO_5 is HIGH or LOW. > however, with Armbian booted (which uses some Amlogic 3.10 kernel > where USB works) I get: > - gate (bottom, right): 0V > - source (top, right): 0V > - drain (left): 3.3V > > what do you get on your board? > I dont have multi-meter to check this out on old and new kernel. As per my observation Amlogic 3.10 (32 bit) and 3.14 (64 bit) both use some state machine the tune the usb port. It's not clear that this will work with upstream kernel. I just checked with board booted with usb device connected we are observing the bus and is getting power up and hot plugging of usb device is working fine. $ lsusb -v|egrep "^Bus|MaxPower" Couldn't open device, some information will be missing Bus 002 Device 003: ID 1b71:0056 Fushicai MaxPower 500mA Couldn't open device, some information will be missing Bus 002 Device 004: ID 152d:0578 JMicron Technology Corp. / JMicron USA Technology Corp. JMS567 SATA 6Gb/s bridge MaxPower 30mA Couldn't open device, some information will be missing Couldn't open device, some information will be missing Bus 002 Device 002: ID 05e3:0610 Genesys Logic, Inc. 4-port hub MaxPower 100mA Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Couldn't open device, some information will be missing MaxPower 0mA Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MaxPower 0mA > > Regards > Martin Best Regards -Anand
