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kernel: qmi_wwan: add support for Quectel EG120K-EA

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The Quectel EG120K-EA (LTE Cat.12) reports USB ID 2c7c:030b and exposes
its QMI/RMNET function on a vendor-specific ff/ff/ff interface. The same
product ID is already known to the option driver as EM060K, which claims
the serial interfaces, but without a qmi_wwan entry the data interface is
left unbound and no cdc-wdm node appears.

Add the device using QMI_MATCH_FF_FF_FF so the DTR quirk is applied.

Tested on a GL.iNet GL-X2000, where the modem enumerates at SuperSpeed and
now brings up cdc-wdm0 and wwan0. A data session over MEO (268-06) was
verified end to end.

Accepted upstream via netdev/net, so this is carried as a backport and can
be dropped once the kernel is bumped to 7.3 or later. Inserting it ahead of
the MeigLink hack shifts that patch's offsets, so
780-usb-net-MeigLink_modem_support.patch is refreshed as well.

Link: https://patch.msgid.link/20260921093426.2870266-1-gilbertorconde@gmail.com

Signed-off-by: Gilberto Conde <gilbertorconde@gmail.com>
This commit is contained in:
Gilberto Conde authored and Robert Marko committed 2026-09-24 15:04:38 +02:00
1 parent 98bc30d154
commit 23bebd5c32
2 files changed
+61 -1
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target/linux/generic/backport-6.18/787-v7.3-net-usb-qmi_wwan-add-Quectel-EG120K-EA.patch
+60
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@@ -0,0 +1,60 @@
From 0f2fd31f63c65c409bd336af3a42d478a9207c1f Mon Sep 17 00:00:00 2001
From: Gilberto Conde <gilbertorconde@gmail.com>
Date: Mon, 21 Sep 2026 10:34:26 +0100
Subject: [PATCH] net: usb: qmi_wwan: add Quectel EG120K-EA
Add support for the Quectel EG120K-EA LTE Cat.12 module (USB ID
2c7c:030b). Its QMI interface (interface 4) uses class/subclass/protocol
ff/ff/ff like the other recent Quectel modules, so match it the same way.
The product ID is shared with the EM060K, which the option driver
already knows and uses to claim the serial interfaces. Without a
qmi_wwan entry the data interface is left unbound.
Tested on a GL.iNet GL-X2000, where the module is soldered down and
enumerates at SuperSpeed: cdc-wdm0 and wwan0 appear and ModemManager
brings up a data session.
T: Bus=02 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=5000 MxCh= 0
D: Ver= 3.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 9 #Cfgs= 1
P: Vendor=2c7c ProdID=030b Rev= 5.04
S: Manufacturer=Quectel
S: Product=EG120K-EA
S: SerialNumber=45546267
C:* #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=896mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option
E: Ad=01(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=81(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=40 Driver=option
E: Ad=83(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=82(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
E: Ad=85(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=84(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=03(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
E: Ad=87(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=86(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
E: Ad=88(I) Atr=03(Int.) MxPS= 8 Ivl=32ms
E: Ad=8e(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
E: Ad=0f(O) Atr=02(Bulk) MxPS=1024 Ivl=0ms
I:* If#=12 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=70 Driver=(none)
E: Ad=89(I) Atr=02(Bulk) MxPS=1024 Ivl=0ms
Signed-off-by: Gilberto Conde <gilbertorconde@gmail.com>
Link: https://patch.msgid.link/20260921093426.2870266-1-gilbertorconde@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -1085,6 +1085,7 @@ static const struct usb_device_id produc
{QMI_MATCH_FF_FF_FF(0x2c7c, 0x0122)}, /* Quectel RG650V */
{QMI_MATCH_FF_FF_FF(0x2c7c, 0x0125)}, /* Quectel EC25, EC20 R2.0 Mini PCIe */
{QMI_MATCH_FF_FF_FF(0x2c7c, 0x0306)}, /* Quectel EP06/EG06/EM06 */
+ {QMI_MATCH_FF_FF_FF(0x2c7c, 0x030b)}, /* Quectel EM060K/EG120K-EA */
{QMI_MATCH_FF_FF_FF(0x2c7c, 0x0512)}, /* Quectel EG12/EM12 */
{QMI_MATCH_FF_FF_FF(0x2c7c, 0x0620)}, /* Quectel EM160R-GL */
{QMI_MATCH_FF_FF_FF(0x2c7c, 0x0800)}, /* Quectel RM500Q-GL */
target/linux/generic/hack-6.18/780-usb-net-MeigLink_modem_support.patch
+1 -1
View File
@@ -22,7 +22,7 @@ Subject: [PATCH] net/usb/qmi_wwan: add MeigLink modem support
{QMI_MATCH_FF_FF_FF(0x2c7c, 0x0122)}, /* Quectel RG650V */
{QMI_MATCH_FF_FF_FF(0x2c7c, 0x0125)}, /* Quectel EC25, EC20 R2.0 Mini PCIe */
{QMI_MATCH_FF_FF_FF(0x2c7c, 0x0306)}, /* Quectel EP06/EG06/EM06 */
@@ -1089,6 +1094,7 @@ static const struct usb_device_id produc
@@ -1090,6 +1095,7 @@ static const struct usb_device_id produc
{QMI_MATCH_FF_FF_FF(0x2c7c, 0x0620)}, /* Quectel EM160R-GL */
{QMI_MATCH_FF_FF_FF(0x2c7c, 0x0800)}, /* Quectel RM500Q-GL */
{QMI_MATCH_FF_FF_FF(0x2c7c, 0x0801)}, /* Quectel RM520N */