Changes between Version 85 and Version 86 of wireless/modem

Timestamp:

03/28/2022 11:18:59 PM (2 years ago)

Author:

Ryan Erbstoesser

Comment:

update telit fn980m for modem hardware 1.2 that doesn't allow for USB switch AT command

wireless/modem

@@ -1795 +1795 @@
   * PCIe on the Qualcomm X55 chipset require a new MHI driver which is expected to be only ready in 5.13 kernels or newer
    * PCIe ID: 17cb:0306 
-   * Requires USB 2.0 to switch modem to PCIe mode with the following AT command:  AT#USBPCISWITCH=1,<GPIO>,2 where GPIO is the GPIO assigned active low (tied to ground) pin used to select PCI Express enable. 
  * Theoretical throughput 5G up to 5.5 DL/1.5 UL Gbps
  * Temperature -40 °C to +85 °C
@@ -1801 +1800 @@
  * Uses QTY 4 MHP4 IPEX antenna ports. Can be used with [https://shop.gateworks.com/index.php?route=product/product&product_id=89 GW16065]
  * No pinout concerns when using Gateworks GW16140/GW16141 M.2 adapters
+  * Pin 20 for enabling PCIe mode is not connected because it is not in the M.2 spec. It is considered a reserved pin, and Gateworks is working to mitigate this in future hardware revisions. 
  * Ports: cdc-wdm0 (qmi), ttyUSB0 (unknown), ttyUSB1 (unknown), ttyUSB2 (at), ttyUSB3 (at), ttyUSB4 (unknown), wwan0 (net)
  * Drivers: 
@@ -1929 +1929 @@
  * Venice
  * Latest 5.15 kernel or newer from Gateworks
+ * Modem hardware revision 1.2 with an adapter that pulls pin 20 low to enable PCIe mode.
 
 Install udhcpc
@@ -1934 +1935 @@
 apt-get update 
 apt-get install udhcpc
-}}}
-
-You need to switch the modem into PCIe mode with the AT command: 
-{{{
-AT#USBPCISWITCH=1,5,0
-AT#REBOOT
-}}}
-
-To issue the AT command without opening the serial console of the modem, use the code below (assuming modem AT port is ttyUSB2:
-{{{
-echo -n -e "AT#USBPCISWITCH=1,5,0\r" > /dev/ttyUSB2
-echo -n -e "AT#REBOOT\r" > /dev/ttyUSB2
 }}}