From nobody Sat Apr 9 18:04:24 2022 X-Original-To: freebsd-arm@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 1556A1AAD7A3 for ; Sat, 9 Apr 2022 18:01:43 +0000 (UTC) (envelope-from archimedes.gaviola@gmail.com) Received: from mail-ed1-x529.google.com (mail-ed1-x529.google.com [IPv6:2a00:1450:4864:20::529]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4KbNGt3CsMz3N51 for ; Sat, 9 Apr 2022 18:01:42 +0000 (UTC) (envelope-from archimedes.gaviola@gmail.com) Received: by mail-ed1-x529.google.com with SMTP id c64so1344334edf.11 for ; Sat, 09 Apr 2022 11:01:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:from:date:message-id:subject:to; bh=h0r5WOAe5kj4YjWQUEryvXsqmpbTClGk8tV3bd96tZg=; b=beoVOB1uLhBN8qmjT7HKM6UcAGTlVsxPYgWScbr4I2ohyhI6mc3qzEkhsLBolEokxA 1WoG4TT02vDZtcfuF9t6h0upoz5VwbPutGDWVKmu9Z14TwGxRDBxlxDCeW5H2OCyNMn4 y5SeyzEaGMJWX2iCTAM+IKzEAmAEDbOZwqXXvmwfZV3iQmVMnS/BQnimbr93F27gwSlr L6KrLMXG28MruklFIxcDjeGTDJVt2XdWaro4VNHohdEGCAf5oSt6+xoWz+Bhp35u7j48 EYISq6nttzLl6WNvPjtSja2Vt/ZE8v5ATDcHu7wJkPX7wA29KndrL+qE3NE5XpyN+Wsz BYHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=h0r5WOAe5kj4YjWQUEryvXsqmpbTClGk8tV3bd96tZg=; b=TlUpB1ZBC3mKpcJWQw8Oeh6oOpz2rQCSgT+mtWAAhF35/7HUvbOAk5NA2CWEAgmzyY ZvqCs3yg2bomE26SkPOZCkVURF4qSJxoSzdUJRgBoKmbfYwbnbJEhvGuc+cfeG1Z+q1T lkbbcqpGbgeGKKltoaKlYAz4aPT5jSt+2KtO9M4EYHcgMhotu3TiHZIcrsj3kzEvQ4pC PcnGd7gwo5ytgP8z46Dx84X+YHcI+Spw8PAqnVMOBynulzdDAtVgEm+2gdO3YS4nMTkI 6A/+aRqkh6qk91OcyF/ooku8wvYk/Y2tCHuPrsnkqmCj9Do90hTbZnpZnfw6+1dVYKof GguA== X-Gm-Message-State: AOAM533DufLQBeGEqVKH/TT6lVWGiqgxsORhKJlVlgeuECae6vkCbklB XWqhKdZDZBkvZ61r0g5mQLgvZRb5XUoTHDiyvQFO0vAXHSw= X-Google-Smtp-Source: ABdhPJz+xkX8J1qoahW4nzayAgRf7wKiT/PdHnPQzv/xCy+YZ5s2lTYdPIskp2JkzLEEdd79O5l7JliEWVC6+TWUTks= X-Received: by 2002:a05:6402:4247:b0:419:3990:3db6 with SMTP id g7-20020a056402424700b0041939903db6mr24822126edb.193.1649527301139; Sat, 09 Apr 2022 11:01:41 -0700 (PDT) List-Id: Porting FreeBSD to ARM processors List-Archive: https://lists.freebsd.org/archives/freebsd-arm List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-arm@freebsd.org MIME-Version: 1.0 From: Archimedes Gaviola Date: Sun, 10 Apr 2022 02:04:24 +0800 Message-ID: Subject: Raspberry Pi 3B Over-current USB To: freebsd-arm@freebsd.org Content-Type: multipart/alternative; boundary="000000000000d4f22b05dc3c8026" X-Rspamd-Queue-Id: 4KbNGt3CsMz3N51 X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20210112 header.b=beoVOB1u; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of archimedesgaviola@gmail.com designates 2a00:1450:4864:20::529 as permitted sender) smtp.mailfrom=archimedesgaviola@gmail.com X-Spamd-Result: default: False [-3.99 / 15.00]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36:c]; FREEMAIL_FROM(0.00)[gmail.com]; TO_DN_NONE(0.00)[]; MID_RHS_MATCH_FROMTLD(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; NEURAL_HAM_SHORT(-1.00)[-1.000]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; TAGGED_FROM(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-0.99)[-0.994]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20210112]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-arm@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::529:from]; MLMMJ_DEST(0.00)[freebsd-arm]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] X-ThisMailContainsUnwantedMimeParts: N Status: O Content-Length: 16354 Lines: 315 --000000000000d4f22b05dc3c8026 Content-Type: text/plain; charset="UTF-8" Hi, I have a Prolific PL2303 USB-serial device when plugged-in to my Raspberry Pi 3B (14.0-CURRENT) will cause an over-current situation (enabled USB hub debugging hw.usb.uhub.debug=1) as observed in the dmesg below. All 4 ports got no power hence my USB keyboard was disconnected and stopped functioning and my PL2303 device wasn't able to get detected and load its uplcom(4) driver. However, the network is still okay in which I am able to access the system over SSH. ukbd0: on usbus1 kbd1 at ukbd0 lo0: link state changed to UP smsc0: chip 0xec00, rev. 0002 ue0: link state changed to DOWN ue0: link state changed to UP uhid0 on uhub1 uhid0: on usbus1 usb_needs_explore: usb_bus_powerd: bus=0xffff000089390000 usb_needs_explore: usb_bus_powerd: bus=0xffff000089390000 usb_needs_explore: usb_bus_powerd: bus=0xffff000089390000 usb_needs_explore: usb_bus_powerd: bus=0xffff000089390000 usb_needs_explore: usb_bus_powerd: bus=0xffff000089390000 uhub_explore: Overcurrent on port 2. uhub_reattach_port: reattaching port 4 ugen1.4: at usbus1 (disconnected) ukbd0: at uhub1, port 4, addr 4 (disconnected) uhub_child_location: device not on hub uhub_child_pnpinfo: device not on hub ukbd0: detached uhid0: at uhub1, port 4, addr 4 (disconnected) uhub_child_location: device not on hub uhub_child_pnpinfo: device not on hub uhid0: detached usb_needs_explore: usb_bus_powerd: bus=0xffff000089390000 usb_needs_explore: usb_bus_powerd: bus=0xffff000089390000 usb_needs_explore: usb_bus_powerd: bus=0xffff000089390000 Here's also the USB device info of my PL2303 device. root@generic:~ # usbconfig -u 0 -a 5 dump_all_desc ugen0.5: at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON (100mA) bLength = 0x0012 bDescriptorType = 0x0001 bcdUSB = 0x0200 bDeviceClass = 0x0000 bDeviceSubClass = 0x0000 bDeviceProtocol = 0x0000 bMaxPacketSize0 = 0x0040 idVendor = 0x067b idProduct = 0x2303 bcdDevice = 0x0300 iManufacturer = 0x0001 iProduct = 0x0002 iSerialNumber = 0x0000 bNumConfigurations = 0x0001 Configuration index 0 bLength = 0x0009 bDescriptorType = 0x0002 wTotalLength = 0x0027 bNumInterfaces = 0x0001 bConfigurationValue = 0x0001 iConfiguration = 0x0000 bmAttributes = 0x00a0 bMaxPower = 0x0032 Interface 0 bLength = 0x0009 bDescriptorType = 0x0004 bInterfaceNumber = 0x0000 bAlternateSetting = 0x0000 bNumEndpoints = 0x0003 bInterfaceClass = 0x00ff bInterfaceSubClass = 0x0000 bInterfaceProtocol = 0x0000 iInterface = 0x0000 Endpoint 0 bLength = 0x0007 bDescriptorType = 0x0005 bEndpointAddress = 0x0081 bmAttributes = 0x0003 wMaxPacketSize = 0x000a bInterval = 0x0001 bRefresh = 0x0000 bSynchAddress = 0x0000 Endpoint 1 bLength = 0x0007 bDescriptorType = 0x0005 bEndpointAddress = 0x0002 bmAttributes = 0x0002 wMaxPacketSize = 0x0040 bInterval = 0x0000 bRefresh = 0x0000 bSynchAddress = 0x0000 Endpoint 2 bLength = 0x0007 bDescriptorType = 0x0005 bEndpointAddress = 0x0083 bmAttributes = 0x0002 wMaxPacketSize = 0x0040 bInterval = 0x0000 bRefresh = 0x0000 bSynchAddress = 0x0000 I'm using a USB port measuring device that can check the voltage and current usages and by default (without any USB devices attached) each port reads as 5.15 volts and 0.00 amperes for current of 3B. I'm using the official Raspberry Pi Stontronics power adapter with 5.1V with 2.5A DC output https://docs.rs-online.com/0c30/0900766b814dc7bb.pdf. From here due to over-current, I cannot obtain the actual power consumptions specific to my PL2303 device so I try installing the latest Raspberry Pi OS to check if it behaves the same. I found out that it has a similar behavior and experience getting over-current with additional under-voltage detected messages. However, it's interesting to observe that even in an over-current and under-voltage experience, all the ports are re-powered up and functioning and then able to load the PL2303 driver and I am able to use it via /dev/ttyUSB0 device. This time I could see the measuring device giving a 4.93 volts with 0.46 amperes of current (460mA) in the PL2303 device (see captured measurement here https://filebin.net/kqq664yf9w70omnh). Below is the dmesg log I've got from RPi OS. [ 7490.507686] usb 1-1-port2: over-current change #3 [ 7490.722717] usb 1-1.2: USB disconnect, device number 5 [ 7491.006607] hwmon hwmon1: Undervoltage detected! [ 7491.094482] usb 1-1.5: new full-speed USB device number 7 using dwc_otg [ 7491.198613] usb 1-1.5: New USB device found, idVendor=067b, idProduct=2303, bcdDevice= 3.00 [ 7491.198676] usb 1-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 7491.198700] usb 1-1.5: Product: USB-Serial Controller [ 7491.198722] usb 1-1.5: Manufacturer: Prolific Technology Inc. [ 7491.200210] pl2303 1-1.5:1.0: pl2303 converter detected [ 7491.206808] usb 1-1.5: pl2303 converter now attached to ttyUSB0 [ 7491.209222] usb 1-1-port2: over-current change #4 [ 7491.646484] usb 1-1.2: new low-speed USB device number 8 using dwc_otg [ 7491.770462] usb 1-1.2: New USB device found, idVendor=09da, idProduct=2267, bcdDevice= 1.05 [ 7491.770515] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 [ 7491.770539] usb 1-1.2: Product: USB Keyboard [ 7491.770560] usb 1-1.2: Manufacturer: A4Tech [ 7491.793771] input: A4Tech USB Keyboard as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/0003:09DA:2267.0004/input/input6 [ 7491.852612] hid-generic 0003:09DA:2267.0004: input,hidraw0: USB HID v1.11 Keyboard [A4Tech USB Keyboard] on usb-3f980000.usb-1.2/input0 [ 7491.875068] input: A4Tech USB Keyboard as /devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.1/0003:09DA:2267.0005/input/input7 [ 7491.935697] hid-generic 0003:09DA:2267.0005: input,hidraw1: USB HID v1.11 Device [A4Tech USB Keyboard] on usb-3f980000.usb-1.2/input1 [ 7495.038507] hwmon hwmon1: Voltage normalised Though this experience is specific to the Raspberry 3B case, is there a way to enable this in FreeBSD? Knowing that there is dropping of voltage to 4.93 volts and current is 460mA which is still below the maximum of 500mA? Thanks, Archimedes --000000000000d4f22b05dc3c8026 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hi,

I have a Prolific PL2303 USB-serial=20 device when plugged-in to my Raspberry Pi 3B (14.0-CURRENT) will cause=20 an over-current situation (enabled USB hub debugging=20 hw.usb.uhub.debug=3D1) as observed in the dmesg below. All 4 ports got no= =20 power hence my USB keyboard was disconnected and stopped functioning and my PL2303 device wasn't able to get detected and load its uplcom(4) dr= iver.=20 However, the network is still okay in which I am able to access the=20 system over SSH.

ukbd0: <A4Tech USB Keyboard, class 0/0, rev 2.00/1.05, addr 4> on usb= us1
kbd1 at ukbd0
lo0: link state changed to UP
smsc0: chip 0xec00= , rev. 0002
ue0: link state changed to DOWN
ue0: link state changed t= o UP
uhid0 on uhub1
uhid0: <A4Tech USB Keyboard, class 0/0, rev 2.= 00/1.05, addr 4> on usbus1
usb_needs_explore:
usb_bus_powerd: bus= =3D0xffff000089390000
usb_needs_explore:
usb_bus_powerd: bus=3D0xffff= 000089390000
usb_needs_explore:
usb_bus_powerd: bus=3D0xffff000089390= 000
usb_needs_explore:
usb_bus_powerd: bus=3D0xffff000089390000
us= b_needs_explore:
usb_bus_powerd: bus=3D0xffff000089390000
uhub_explor= e: Overcurrent on port 2.
uhub_reattach_port: reattaching port 4
ugen= 1.4: <A4Tech USB Keyboard> at usbus1 (disconnected)
ukbd0: at uhub= 1, port 4, addr 4 (disconnected)
uhub_child_location: device not on hub<= br>uhub_child_pnpinfo: device not on hub
ukbd0: detached
uhid0: at uh= ub1, port 4, addr 4 (disconnected)
uhub_child_location: device not on hu= b
uhub_child_pnpinfo: device not on hub
uhid0: detached
usb_needs_= explore:
usb_bus_powerd: bus=3D0xffff000089390000
usb_needs_explore:<= br>usb_bus_powerd: bus=3D0xffff000089390000
usb_needs_explore:
usb_bu= s_powerd: bus=3D0xffff000089390000

Here's also= the USB device info of my PL2303 device.

root@generic:~ # usbconfig -u 0 -a 5 dump_all_desc
=C2=A0 ug= en0.5: <Prolific Technology Inc. USB-Serial Controller> at usbus0, cf= g=3D0 md=3DHOST spd=3DFULL (12Mbps) pwr=3DON (100mA)
=C2=A0 bLeng= th =3D 0x0012
=C2=A0 bDescriptorType =3D 0x0001
=C2=A0 = bcdUSB =3D 0x0200
=C2=A0 bDeviceClass =3D 0x0000=C2=A0 <Probed= by interface class>
=C2=A0 bDeviceSubClass =3D 0x0000
=C2=A0 bDeviceProtocol =3D 0x0000
=C2=A0 bMaxPacketSize0 =3D 0= x0040
=C2=A0 idVendor =3D 0x067b
=C2=A0 idProduct =3D 0= x2303
=C2=A0 bcdDevice =3D 0x0300
=C2=A0 iManufacturer = =3D 0x0001=C2=A0 <Prolific Technology Inc.>
=C2=A0 iProduct= =3D 0x0002=C2=A0 <USB-Serial Controller>
=C2=A0 iSerialNum= ber =3D 0x0000=C2=A0 <no string>
=C2=A0 bNumConfigurations = =3D 0x0001

=C2=A0Configuration index 0
<= br>
=C2=A0 =C2=A0 bLength =3D 0x0009
=C2=A0 =C2=A0 bDes= criptorType =3D 0x0002
=C2=A0 =C2=A0 wTotalLength =3D 0x0027
=C2=A0 =C2=A0 bNumInterfaces =3D 0x0001
=C2=A0 =C2=A0 bConf= igurationValue =3D 0x0001
=C2=A0 =C2=A0 iConfiguration =3D 0x0000= =C2=A0 <no string>
=C2=A0 =C2=A0 bmAttributes =3D 0x00a0
=C2=A0 =C2=A0 bMaxPower =3D 0x0032

=C2= =A0 =C2=A0 Interface 0
=C2=A0 =C2=A0 =C2=A0 bLength =3D 0x0009
=C2=A0 =C2=A0 =C2=A0 bDescriptorType =3D 0x0004
=C2=A0 = =C2=A0 =C2=A0 bInterfaceNumber =3D 0x0000
=C2=A0 =C2=A0 =C2=A0 bA= lternateSetting =3D 0x0000
=C2=A0 =C2=A0 =C2=A0 bNumEndpoints =3D= 0x0003
=C2=A0 =C2=A0 =C2=A0 bInterfaceClass =3D 0x00ff=C2=A0 <= ;Vendor specific>
=C2=A0 =C2=A0 =C2=A0 bInterfaceSubClass =3D = 0x0000
=C2=A0 =C2=A0 =C2=A0 bInterfaceProtocol =3D 0x0000
=C2=A0 =C2=A0 =C2=A0 iInterface =3D 0x0000=C2=A0 <no string>
=

=C2=A0 =C2=A0 =C2=A0Endpoint 0
=C2=A0 =C2=A0 = =C2=A0 =C2=A0 bLength =3D 0x0007
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bDes= criptorType =3D 0x0005
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bEndpointAddre= ss =3D 0x0081=C2=A0 <IN>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bmAttr= ibutes =3D 0x0003=C2=A0 <INTERRUPT>
=C2=A0 =C2=A0 =C2=A0 = =C2=A0 wMaxPacketSize =3D 0x000a
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bInt= erval =3D 0x0001
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bRefresh =3D 0x0000<= /div>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bSynchAddress =3D 0x0000
=C2=A0 =C2=A0 =C2=A0Endpoint 1
=C2=A0 =C2=A0 =C2=A0 = =C2=A0 bLength =3D 0x0007
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bDescriptor= Type =3D 0x0005
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bEndpointAddress =3D = 0x0002=C2=A0 <OUT>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bmAttributes= =3D 0x0002=C2=A0 <BULK>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 wMaxPa= cketSize =3D 0x0040
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bInterval =3D 0x0= 000
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bRefresh =3D 0x0000
=C2= =A0 =C2=A0 =C2=A0 =C2=A0 bSynchAddress =3D 0x0000

= =C2=A0 =C2=A0 =C2=A0Endpoint 2
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bLengt= h =3D 0x0007
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bDescriptorType =3D 0x00= 05
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bEndpointAddress =3D 0x0083=C2=A0 = <IN>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bmAttributes =3D 0x0002=C2= =A0 <BULK>
=C2=A0 =C2=A0 =C2=A0 =C2=A0 wMaxPacketSize =3D 0= x0040
=C2=A0 =C2=A0 =C2=A0 =C2=A0 bInterval =3D 0x0000
= =C2=A0 =C2=A0 =C2=A0 =C2=A0 bRefresh =3D 0x0000
=C2=A0 =C2=A0 =C2= =A0 =C2=A0 bSynchAddress =3D 0x0000

I'm using a USB port measuring device that ca= n check the voltage and current usages and by default (without any USB=20 devices attached) each port reads as 5.15 volts and 0.00 amperes for=20 current of 3B. I'm using the official Raspberry Pi=20 Stontronics power adapter with 5.1V with 2.5A DC output https://docs.rs-online.com/0c= 30/0900766b814dc7bb.pdf. From here due=20 to over-current, I cannot obtain the actual power consumptions specific to my PL2303 device so I try installing the latest Raspberry Pi OS to check if it behaves the same. I found out that it=20 has a similar behavior and experience getting over-current with=20 additional under-voltage detected messages. However, it's interesting t= o observe=20 that even in an over-current and under-voltage experience, all the ports=20 are re-powered up and functioning and then able to load the PL2303 driver a= nd I am able to use it via /dev/ttyUSB0 device. This time I could see=20 the measuring device giving a 4.93 volts with 0.46 amperes of current (460m= A) in the PL2303 device (see captured measurement here https://filebin.net/kqq664yf9w70omnh). Bel= ow is the dmesg log I've got from RPi OS.

[ 7490.507686] usb 1-1-port2: over-current change #3
[ 7490.722717] usb = 1-1.2: USB disconnect, device number 5
[ 7491.006607] hwmon hwmon1: Unde= rvoltage detected!
[ 7491.094482] usb 1-1.5: new full-speed USB device n= umber 7 using dwc_otg
[ 7491.198613] usb 1-1.5: New USB device found, id= Vendor=3D067b, idProduct=3D2303, bcdDevice=3D 3.00
[ 7491.198676] usb 1-= 1.5: New USB device strings: Mfr=3D1, Product=3D2, SerialNumber=3D0
[ 74= 91.198700] usb 1-1.5: Product: USB-Serial Controller
[ 7491.198722] usb = 1-1.5: Manufacturer: Prolific Technology Inc.
[ 7491.200210] pl2303 1-1.= 5:1.0: pl2303 converter detected
[ 7491.206808] usb 1-1.5: pl2303 conver= ter now attached to ttyUSB0
[ 7491.209222] usb 1-1-port2: over-current c= hange #4
[ 7491.646484] usb 1-1.2: new low-speed USB device number 8 usi= ng dwc_otg
[ 7491.770462] usb 1-1.2: New USB device found, idVendor=3D09= da, idProduct=3D2267, bcdDevice=3D 1.05
[ 7491.770515] usb 1-1.2: New US= B device strings: Mfr=3D1, Product=3D2, SerialNumber=3D0
[ 7491.770539] = usb 1-1.2: Product: USB Keyboard
[ 7491.770560] usb 1-1.2: Manufacturer:= A4Tech
[ 7491.793771] input: A4Tech USB Keyboard as /devices/platform/s= oc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/0003:09DA:2267.0004/input/input6[ 7491.852612] hid-generic 0003:09DA:2267.0004: input,hidraw0: USB HID=20 v1.11 Keyboard [A4Tech USB Keyboard] on usb-3f980000.usb-1.2/input0
[ 74= 91.875068] input: A4Tech USB Keyboard as /devices/platform/soc/3f980000.usb= /usb1/1-1/1-1.2/1-1.2:1.1/0003:09DA:2267.0005/input/input7
[ 7491.935697] hid-generic 0003:09DA:2267.0005: input,hidraw1: USB HID=20 v1.11 Device [A4Tech USB Keyboard] on usb-3f980000.usb-1.2/input1
[ 7495= .038507] hwmon hwmon1: Voltage normalised

Though this experience is specific to the Raspberry 3B case, is there a way to enable this in FreeBSD? Knowing that there is dropping of voltage to=20 4.93 volts and current is 460mA which is still below the maximum of 500mA?<= /div>

Thanks,
Archimedes
--000000000000d4f22b05dc3c8026--