Venice Errata

The below errata only affects certain models and certain revisions.

Please contact support@… with any questions.

Product Change Notifications (PCNs) are issued when errata or new revisions are released for Gateworks SBCs. Subscribe to the following Google group to get automatic notifications.

There are two ways to subscribe:

1. Send email to pcn+subscribe@gateworks.com
   • This does not require a Google account and will send PCN notifications as e-mails
2. Join group at URL ​https://groups.google.com/a/gateworks.com/d/forum/pcn
   • This requires a Google account and provides a forum-like User Interface which provides a richer experience including history

PCN Events are triggered by several sources:

1. Errata - Venice, Newport, Ventana, Laguna
2. ECO - New Board Revision
3. GSC firmware updates - changes to GSC firmware that ships on non revision locked board models by default
4. Firmware image updates - changes to pre-built firmware image that ships on non revision locked board models by default (bootloaders + OS)
5. Product End Of Life (EOL) notification (single board computers as well as popular OEM add-on cards re-sold through the store)

VN1 eth0 LED's dim

Issue:

• The Link speed and activity LED's on the eth0 RJ45 are insufficiently illuminated.

Resolution:

• This is resolved on PCB 02210198-02 (GW730x-C) (Rev C)

Affected Product:

• GW730x-B (PCB 02210198-01)

VN2: GSC lockup

Issue:

• An errata in the MSP430FR5847 used as the GSC (GSCv3) for Venice single board computers can cause unexpected GSC lockup events. The effects of a GSC lockup can be described as:
  • failure of board to boot due to inability to read board I2C EEPROM
  • failure to read the I2C RTC and update the system time
  • failure to adjust ARM CPU core voltage regulator during cpu frequency changes
  • loss of RTC and GSC register configuration

Affected Product:

• GW7xxx

Resolution:

• Update boards to GSC firmware v60

Fixed in:

• GSC firmware v60

VN3 Active PoE Circuit Leakage & Reset

Issue:

• PoE leakage current can charge up the barrel jack detection circuit (WAD circuit) and shut down the PoE input
  • Add resistor to sink current

Affected Product:

• GW730x-C (PCB 02210198-02)
• GW7902x-C (PCB 02210224-02)
• GW730x-D (PCB 02210198-03)

Resolution:

• This is resolved on PCB 02210198-02 (GW730x-C.1) (Rev C.1)
• This is resolved on PCB 02210224-02 (GW7902-C.1, SP467-C.2 & C.3, SP476-C.1, SP477-C.1, SP481-C.1 ) (Rev C.1)
• This is resolved on PCB 02210198-04 (GW730x-E)

VN4 GPY111 PHY replacement

Issue:

• Due to supply chain limitations the DP83867 GbE PHY has been replaced with the GPY111 GbE PHY

Resolution:

• Software support which is already present in the latest Venice Gateworks boot firmware is needed to support this PHY. If using older boot firmware the following patches are needed:
  • ​imx8mmm-venice-gw700x: add support for GPY111 phy (for GW700x)
  • ​imx8m{m,n}-venice-gw7902: add support for GPY111 phy (for GW7902)
  • ​net: fec: prevent undesired de-assertion of phy-reset on request
  • ​board: gateworks venice: add support for GPY111 phy
• No changes are necessary to the Linux kernel as long as you are not using the kernel driver intended for this PHY; CONFIG_INTEL_XWAY_PHY / drivers/net/phy/intel-xway.c; This driver may unintentionally reset the PHY and disturb the proper RGMII internal delays and/or LED functionality - do not use this driver by disabling it (CONFIG_INTEL_XWAY_PHY=n or blacklisting/removing the module)

Affected Products:

• GW700x-E+ (PCB 02210210-04) (SoM used on GW710x/GW720x/GW730x boards)
• GW7902-C+ (PCB 02210224-02)

Notes:

• To determine what version of SoM your GW710x/GW720x/GW730x board uses use the 'gsc' command in U-Boot:

  u-boot=> gsc
  Model   : GW7300-00-B1B
  Serial  : 852418
  MFGDate : 10-20-2020
  SOM     : GW7000-B 852418 10-20-2020
  BASE    : GW7300-B1 849162 10-06-2020
  ...
  

• If your software has the required support the PHY will be shown in U-Boot as follows:

  Net:   GPY111 eth0: ethernet@30be0000 [PRIME]
  

VN5 GPY111 PHY bit error rate and link errata

Issue:

• The GPY111 PHY used on a variety of boards in the Venice product family has some errata from the manufacturer that affects Venice products:
  1. When operating on a GbE link occasionally a link will have a high CRC error rate directly after a cable plug-in or board power-up event. A link down/up event will typically resolve this issue.

Resolution:

• Issue #1 is addressed internally by firmware in the PHY: If the PHY exceeds an allowed threshold of 'Start-of-Stream Delimiter' (SSD) errors it will restart link negotiation a number of times before finally giving up and will then 'Auto-Downspeed' (ADS) to a 100mbps link. This feature is configured by the PHY LSADS field (bit 15 - 14) of the PHY_PHYCTL2 MII register (0x14) where a value of 00b is Off (ADS disabled), 01B will retry 1 time, 10B will retry 3 times (default), and 11B will retry 4 times. An ADS event is signaled by the LSADS bit (bit 8) of the PHY_PHYSTAT1 (0x11) MII register being set. The overall affect of using ADS is that the link may not be stable until it has settled after the link is brought up and in rare cases the link may settle at 100mbps. In extensive testing it has been found that link retries occurs about 1 in 100 plug-in/power-up events, an Auto-Downspeed to 100m occurs less than 1 in 5000 plug-in/power-up events, and that the link is stable within 30 seconds.

Affected Products:

• GW700x-E+ (PCB 02210210-04)
• GW7902-C+
• GW7903-A+

VN6 GPY111 limited ESD protection

Issue:

• The GPY111 PHY used on a variety of boards lacks internal ESD protection to the level of modern standards which could result in network functionality being permanently limited due to ESD cable hot-plug events.

Workaround:

• For outdoor applications and boards that could be exposed to electrical events, we would recommend you use an external RJ45 surge protector. The following product also additionally helps to protect against lightning events up to IEC 61000-4-5 (Lightning) 40A (8/20us):
  • ​Watchful Eye WTH-SG/RJ45-S, US121101X (Also available on Amazon)

Resolution:

• additional ESD protection has been added between the GPY111 PHY and magnetics to the RJ45. Note that for GW71xx/GW72xx/GW73xx the GPY111 PHY is on the SoM and the external ESD protection is on the baseboard.

Affected Products:

• GW710x-A/B/C baseboard with GW700x-E+ SoM
• GW720x-A/B/C/D baseboard with GW700x-E+ SoM
• GW730x-A/B/C baseboard with GW700x-E+ SoM
• GW740x-A

Resolved on:

• GW710x-D (PCB 02210196-03)
• GW720x-E (PCB 02210197-04)
• GW730x-D (PCB 02210198-03)
• GW740x-B (PCB 02210199-01)

To determine if your board is affected use the 'gsc' command in U-Boot to see the model of the GW700x SoM and the baseboard:

u-boot=> gsc
GSCv3   : v61 0x1d6f RST:VIN Thermal protection:enabled at 96C
RTC     : 2022-07-06  17:52:43 UTC
Model   : GW7200-00-B1C1
Serial  : 856948
MFGDate : 01-22-2021
SOM     : GW7000-C1 856948 01-22-2021
BASE    : GW7200-B1 869388 05-12-2021

• this example shows a GW7000-C.1 SoM on a GW7200-B.1 baseboard.

Contact sales@… if you need assistance

VN7 Onboard WiFi Non-Functional

Issue:

• The onboard Laird LWB-5+ module WiFi interface is non-functioning. The BLE interface works properly.

Affected Product:

• GW7301-D (PCB 02210198-03) Note the standard GW7300-D does not include this module.

Resolution:

• This is resolved on PCB 02210198-04 (GW730x-E)

VN8 GSC Battery Voltage

Issue:

• When the rechargeable battery is below 1.8VDC voltage, the GSC may not reset the board properly when in the default configuration which implements a 'cold boot' (power cycle) to perform system resets and reboots. This can result in a SBC that does not power back on.

Workaround:

• Disable GSC R0.7 so that a CPU reset (as in a U-Boot reset command, a Linux shutdown command, a Linux reboot command, and a CPU watchdog reset) only performs a warm boot and not a cold boot. One way to easily adjust this bit is with a i2c command in the bootloader as follows:

          i2c dev 0 && i2c mw 0x20 0 1 && i2c mw 0x20 0x1f 0xa1
  

• Note if the board is in this non-powered condition, the GSC battery can be removed to allow the board to be re-powered and gain access to the bootloader

Resolution:

• For affected products, a GSC firmware update will be issued in the future which defaults this bit to warm boot. This update is recommended for all Venice board revisions.

Affected Products:

• GW710x-A/B/C/D
• GW720x-A/B/C/D/E
• GW730x-A/B/C/D/E
• GW740x-A/B

Resolved on:

• GW710x-E (PCB 02210196-04)
• GW720x-F (PCB 02210197-05)
• GW730x-F (PCB 02210198-05)
• GW740x-C (PCB 02210199-02)