Other Parts Discussed in Thread: TPS2066, TUSB8020BEVM
Hi,
Please find the schematic in the link below.
https://e2e.ti.com/support/interface/f/138/t/895306
Issue:
PWRON1_BATEN1,PWRON1_BATEN2 act as low level and can't enable the power switch TPS2066 to support SVCC1,SVCC2 for downstream port USB2A and USB2B. Please also find the result through serial port in the below.
[ 2.954795] hub 1-0:1.0: USB hub found
[ 2.958546] hub 1-0:1.0: 1 port detected
[ 2.962625] xhci-hcd xhci-hcd.0.auto: xHCI Host Controller
[ 2.968114] xhci-hcd xhci-hcd.0.auto: new USB bus registered, assigned bus number 2
[ 2.975792] usb usb2: We don't know the algorithms for LPM for this host, disabling LPM.
[ 2.984124] hub 2-0:1.0: USB hub found
[ 2.987878] hub 2-0:1.0: 1 port detected
[ 2.991966] xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
[ 2.997454] xhci-hcd xhci-hcd.1.auto: new USB bus registered, assigned bus number 3
[ 3.005292] xhci-hcd xhci-hcd.1.auto: hcc params 0x0220f66d hci version 0x100 quirks 0x02010010
[ 3.014006] xhci-hcd xhci-hcd.1.auto: irq 46, io mem 0x03000000
[ 3.020174] hub 3-0:1.0: USB hub found
[ 3.023929] hub 3-0:1.0: 1 port detected
[ 3.027991] xhci-hcd xhci-hcd.1.auto: xHCI Host Controller
[ 3.033476] xhci-hcd xhci-hcd.1.auto: new USB bus registered, assigned bus number 4
[ 3.041155] usb usb4: We don't know the algorithms for LPM for this host, disabling LPM.
[ 3.049483] hub 4-0:1.0: USB hub found
[ 3.053239] hub 4-0:1.0: 1 port detected
[ 3.057326] xhci-hcd xhci-hcd.2.auto: xHCI Host Controller
[ 3.062857] xhci-hcd xhci-hcd.2.auto: new USB bus registered, assigned bus number 5
[ 3.070698] xhci-hcd xhci-hcd.2.auto: hcc params 0x0220f66d hci version 0x100 quirks 0x02010010
[ 3.079407] xhci-hcd xhci-hcd.2.auto: irq 47, io mem 0x03100000
[ 3.085574] hub 5-0:1.0: USB hub found
[ 3.089328] hub 5-0:1.0: 1 port detected
[ 3.093409] xhci-hcd xhci-hcd.2.auto: xHCI Host Controller
[ 3.098930] xhci-hcd xhci-hcd.2.auto: new USB bus registered, assigned bus number 6
[ 3.106610] usb usb6: We don't know the algorithms for LPM for this host, disabling LPM.
[ 3.114940] hub 6-0:1.0: USB hub found
[ 3.118698] hub 6-0:1.0: 1 port detected
Questions:
1. REG_6h(batEn[3:0]) should be configured manually or are active 1 by default for all ports?
2. Does there any other suggestion to solve PWRON1_BATEN1,PWRON1_BATEN2 low output issue?
Best Regards,
Tess