4G LTE SLM630B module not working

Chip Platform Rockchip
1

I have some trouble with the Forge SLM630B LTE module. When I connect this module in the PCIe port on the underside of the RK3399, it won’t show up. I’m using the latest Linux Xubuntu build “Firefly-rk3399_xubuntu1604_201705111112”. If I use the USB to PCIe adapter the modem shows up as Android, but it doesn’t show up as /dev/ttyUSB(x), so we are not able to connect to it and dial up.
Do I need some additional firmware for the modem to work when it’s plugged into the PCIe connector on the underside of the board? And do I need some drivers to be able to access the modem and dial up, both when using the USB adapter and using the PCIe port?

I have two boards. The one mentioned will not connect to the modem. The other one came shipped from factory with Ubuntu/Android dual-boot. The modem works fine on that one, but not on the one I’ve re-flashed with the latest Xubuntu release. I see that the factory one uses teh “Option” module, but I cannot find that in the re-flashed one. Do the kernel need to be re-compiled with this module?

2 
diff --git a/kernel/drivers/usb/serial/option.c b/kernel/drivers/usb/serial/option.c
index 42cc72e..c7fb896 100644 (file)
--- a/kernel/drivers/usb/serial/option.c
+++ b/kernel/drivers/usb/serial/option.c
@@ -51,6 +51,8 @@ static void option_release(struct usb_serial *serial);
 static void option_instat_callback(struct urb *urb);

 /* Vendor and product IDs */
+#define SIGNAL_VENDOR_ID 0x05c6
+#define SIGNAL_PRODUCT_ID 0x9025
 #define OPTION_VENDOR_ID                       0x0AF0
 #define OPTION_PRODUCT_COLT                    0x5000
 #define OPTION_PRODUCT_RICOLA                  0x6000
@@ -662,6 +664,7 @@ static const struct option_blacklist_info cinterion_rmnet2_blacklist = {
 };

 static const struct usb_device_id option_ids[] = {
+       { USB_DEVICE(SIGNAL_VENDOR_ID, SIGNAL_PRODUCT_ID) },
        { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_COLT) },
        { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA) },
        { USB_DEVICE(OPTION_VENDOR_ID, OPTION_PRODUCT_RICOLA_LIGHT) },
3

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4

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