Hi Martin, On Tue, 5 Feb 2019 at 02:08, Martin Blumenstingl <martin.blumenstingl@xxxxxxxxxxxxxx> wrote: > > Hi Anand, > > On Mon, Feb 4, 2019 at 9:04 PM Anand Moon <linux.amoon@xxxxxxxxx> wrote: > [...] > > 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. > do you have a filename / line number in Amlogic's kernel regarding > this state machine and / or tuning logic? > > > 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 > for me it stops at the Genesys Logic, Inc. 4-port hub (I see the root > hub, the 4-port hub and then nothing more) using the mainline kernel > (with or without your patches) > > I'm not sure what to do with this information though. > currently we have no reliable way to tell if GPIOAO_5 is only for the > OTG port (usb0) or also for the host-only port (usb1). > In order to enable usb debug verbose output we need to compile the kernel with following option. CONFIG_DYNAMIC_DEBUG=y CONFIG_USB_DWC2_DEBUG=y CONFIG_USB_DWC2_VERBOSE=y to get more in sight into usb initialization and low level hand shake. ----------------------------- [ 1.796436] dwc2 c90c0000.usb: mapped PA c90c0000 to VA (ptrval) [ 1.796481] dwc2 c90c0000.usb: c90c0000.usb supply vusb_d not found, using dummy regulator [ 1.799183] dwc2 c90c0000.usb: Linked as a consumer to regulator.0 [ 1.805320] dwc2 c90c0000.usb: c90c0000.usb supply vusb_a not found, using dummy regulator [ 1.813600] dwc2 c90c0000.usb: registering common handler for irq26 [ 1.814794] dwc2 c90c0000.usb: Core Release: 3.10a (snpsid=4f54310a) [ 1.814803] dwc2 c90c0000.usb: Forcing mode to host [ 1.883383] dwc2 c90c0000.usb: dwc2_check_params: Invalid parameter lpm=1 [ 1.884534] dwc2 c90c0000.usb: dwc2_check_params: Invalid parameter lpm_clock_gating=1 [ 1.892435] dwc2 c90c0000.usb: dwc2_check_params: Invalid parameter besl=1 [ 1.899318] dwc2 c90c0000.usb: dwc2_check_params: Invalid parameter hird_threshold_en=1 [ 1.907300] dwc2 c90c0000.usb: DWC OTG HCD INIT [ 1.907306] dwc2 c90c0000.usb: hcfg=00000200 [ 1.907319] dwc2 c90c0000.usb: dwc2_core_init((ptrval)) [ 1.907324] dwc2 c90c0000.usb: HS UTMI+ PHY selected [ 1.907330] dwc2 c90c0000.usb: Internal DMA Mode [ 1.907337] dwc2 c90c0000.usb: Host Mode [ 1.907599] dwc2 c90c0000.usb: DWC OTG Controller [ 1.911994] dwc2 c90c0000.usb: new USB bus registered, assigned bus number 1 [ 1.919060] dwc2 c90c0000.usb: irq 26, io mem 0xc90c0000 [ 1.924323] dwc2 c90c0000.usb: DWC OTG HCD START [ 1.924335] dwc2 c90c0000.usb: dwc2_core_host_init((ptrval)) [ 1.924342] dwc2 c90c0000.usb: Initializing HCFG.FSLSPClkSel to 00000000 [ 1.924349] dwc2 c90c0000.usb: initial grxfsiz=00000800 [ 1.924354] dwc2 c90c0000.usb: new grxfsiz=00000200 [ 1.924360] dwc2 c90c0000.usb: initial gnptxfsiz=08000800 [ 1.924365] dwc2 c90c0000.usb: new gnptxfsiz=01f40200 [ 1.924370] dwc2 c90c0000.usb: initial hptxfsiz=08000000 [ 1.924375] dwc2 c90c0000.usb: new hptxfsiz=01f403f4 [ 1.924389] dwc2 c90c0000.usb: dwc2_core_host_init: Halt channel 0 [ 1.924396] dwc2 c90c0000.usb: dwc2_core_host_init: Halt channel 1 [ 1.924401] dwc2 c90c0000.usb: dwc2_core_host_init: Halt channel 2 [ 1.924406] dwc2 c90c0000.usb: dwc2_core_host_init: Halt channel 3 [ 1.924412] dwc2 c90c0000.usb: dwc2_core_host_init: Halt channel 4 [ 1.924417] dwc2 c90c0000.usb: dwc2_core_host_init: Halt channel 5 Best Regards -Anand
