[openwrt/openwrt] generic: 6.12: backport net-usb-qmi_wwan: add Quectel RG255C

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/902b25abf38c542cf305e244322bc07edd2ce69c

commit 902b25abf38c542cf305e244322bc07edd2ce69c
Author: Til Kaiser <mail at tk154.de>
AuthorDate: Mon Nov 24 15:49:47 2025 +0100

    generic: 6.12: backport net-usb-qmi_wwan: add Quectel RG255C
    
    Backport support for the Quectel RG255C USB modem.
    This modem is used, among others, on the Teltonika RUT976.
    
    Signed-off-by: Til Kaiser <mail at tk154.de>
    Link: https://github.com/openwrt/openwrt/pull/20933
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 ...v6.13-net-usb-qmi_wwan-add-Quectel-RG255C.patch | 47 ++++++++++++++++++++++
 1 file changed, 47 insertions(+)

diff --git a/target/linux/generic/backport-6.12/630-v6.13-net-usb-qmi_wwan-add-Quectel-RG255C.patch b/target/linux/generic/backport-6.12/630-v6.13-net-usb-qmi_wwan-add-Quectel-RG255C.patch
new file mode 100644
index 0000000000..a1eb835a55
--- /dev/null
+++ b/target/linux/generic/backport-6.12/630-v6.13-net-usb-qmi_wwan-add-Quectel-RG255C.patch
@@ -0,0 +1,47 @@
+From 5c964c8a97c12145104f5d2782aa1ffccf3a93dd Mon Sep 17 00:00:00 2001
+From: Martin Hou <martin.hou at foxmail.com>
+Date: Mon, 16 Dec 2024 11:06:18 +0800
+Subject: [PATCH] net: usb: qmi_wwan: add Quectel RG255C
+
+Add support for Quectel RG255C which is based on Qualcomm SDX35 chip.
+The composition is DM / NMEA / AT / QMI.
+
+T:  Bus=01 Lev=01 Prnt=01 Port=04 Cnt=01 Dev#=  2 Spd=480  MxCh= 0
+D:  Ver= 2.01 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
+P:  Vendor=2c7c ProdID=0316 Rev= 5.15
+S:  Manufacturer=Quectel
+S:  Product=RG255C-CN
+S:  SerialNumber=c68192c1
+C:* #Ifs= 4 Cfg#= 1 Atr=a0 MxPwr=500mA
+I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=30 Driver=option
+E:  Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+E:  Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+I:* If#= 1 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=00 Prot=00 Driver=option
+E:  Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+E:  Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=40 Driver=option
+E:  Ad=84(I) Atr=03(Int.) MxPS=  10 Ivl=32ms
+E:  Ad=83(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+E:  Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=50 Driver=qmi_wwan
+E:  Ad=86(I) Atr=03(Int.) MxPS=   8 Ivl=32ms
+E:  Ad=85(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+E:  Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
+
+Signed-off-by: Martin Hou <martin.hou at foxmail.com>
+Link: https://patch.msgid.link/tencent_17DDD787B48E8A5AB8379ED69E23A0CD9309@qq.com
+Signed-off-by: Jakub Kicinski <kuba at kernel.org>
+---
+ drivers/net/usb/qmi_wwan.c | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/drivers/net/usb/qmi_wwan.c
++++ b/drivers/net/usb/qmi_wwan.c
+@@ -1442,6 +1442,7 @@ static const struct usb_device_id produc
+ 	{QMI_QUIRK_SET_DTR(0x2c7c, 0x0195, 4)},	/* Quectel EG95 */
+ 	{QMI_FIXED_INTF(0x2c7c, 0x0296, 4)},	/* Quectel BG96 */
+ 	{QMI_QUIRK_SET_DTR(0x2c7c, 0x030e, 4)},	/* Quectel EM05GV2 */
++	{QMI_QUIRK_SET_DTR(0x2c7c, 0x0316, 3)},	/* Quectel RG255C */
+ 	{QMI_QUIRK_SET_DTR(0x2cb7, 0x0104, 4)},	/* Fibocom NL678 series */
+ 	{QMI_QUIRK_SET_DTR(0x2cb7, 0x0112, 0)},	/* Fibocom FG132 */
+ 	{QMI_FIXED_INTF(0x0489, 0xe0b4, 0)},	/* Foxconn T77W968 LTE */