适配前理清楚一下调试的流程:

1.该模块为LGA封装,需要控制上电时序模块才能正常上电工作:

2.模块供电正常后,读取模组的PID 和VID 并将其ID添加到内核里面,确保USB转Serial端口能够正常生成:

3.生成ttyUSB0~ttyUSB2端口后,确保rild进程正常启动,能够正常加载ril库;

4.查看一下AT命令集,善于捕捉ril log,熟练使用 logcat -b radio,移远方案,可以通过创建文件

/data/quectel_debug_log 来存储RIL 加载信息,同时瑞芯微对应4G模块这方面的资料也是比较完善的,可以阅读一下
RKDocs/common/mobile-net/Rockchip_Introduction_4G_Module_Configuration_CN\&EN.pdf。流程理清楚了,我们就可以在我们的硬件平台上来移植4G模组了。

//偷个懒,将EC200A的module PWRRK0_PB4和reset脚RK0_PB1 控制添加到LED灯的控制驱动里面,//将 module PWRRK0_PB4 置高,将reset脚RK0_PB1置低#include "rk3566-box.dtsi"/ {model = "Rockchip RK3566 BOX DM35 Project";compatible = "rockchip,rk3568-box-demo-v10", "rockchip,rk3566";gpio-leds {compatible = "gpio-leds";//ir-led {//gpios = ;//default-state = "off";//};//MODULE_PWR GPIO0_B4+modem-resetled {+gpios = ;+default-state = "on";+};+modem-led {+gpios = ;+default-state = "on";+};work-led { /*led GPIO0_C3_d*/gpios = ;//linux,default-trigger = "timer";default-state = "on";};};-------------------------------------------------------------wireless_bluetooth: wireless-bluetooth {compatible = "bluetooth-platdata";clocks = ;clock-names = "ext_clock";//wifi-bt-power-toggle;uart_rts_gpios = ;pinctrl-names = "default", "rts_gpio";pinctrl-0 = ;pinctrl-1 = ;BT,reset_gpio= ;BT,wake_gpio = ;BT,wake_host_irq = ;status = "okay";};+//添加4G模块的上电初始化时序,以确保模块能够正常上电工作+rk_modem: rk-modem {+compatible="4g-modem-platdata";+pinctrl-names = "default";+pinctrl-0 = ;+4G,vbat-gpio = ; //VBUS_CTRL+4G,power-gpio = ; //MODULE_PWRKEY+//4G,reset-gpio = ; //MODULE_RESET_N+//MODULE_PWR GPIO0_B4+status = "okay";+};wireless-wlan {wifi_host_wake_irq: wifi-host-wake-irq {rockchip,pins = ;};};wireless-bluetooth {uart1_gpios: uart1-gpios {rockchip,pins = ;};};+rk-modem {+lte_vbat: lte-vbat {+rockchip,pins = ;+};+lte_power_en: lte-power-en {+rockchip,pins = ;+};+//lte_reset: lte-reset {+//rockchip,pins = ;+//};};修改完这些之后,使用lsusb命令查看模块的PID和VIDBus 005 Device 001: ID 1d6b:0002Bus 003 Device 001: ID 1d6b:0001Bus 001 Device 001: ID 1d6b:0002Bus 008 Device 001: ID 1d6b:0003Bus 006 Device 001: ID 1d6b:0003Bus 001 Device 004: ID 2c7c:6005Bus 004 Device 001: ID 1d6b:0001Bus 002 Device 001: ID 1d6b:0002Bus 007 Device 001: ID 1d6b:0002上面显示的2c7c:6005就是我们4G模块的VID和PID,这说明我们的上电时序已经修改成了,接下来修改内核,添加模块的VID和PIDgit diff arch/arm64/configs/rockchip_defconfigdiff --git a/kernel/arch/arm64/configs/rockchip_defconfig b/kernel/arch/arm64/configs/rockchip_defconfigindex 3c1008aab5..66a6cc02a9 100644--- a/kernel/arch/arm64/configs/rockchip_defconfig+++ b/kernel/arch/arm64/configs/rockchip_defconfig@@ -776,6 +776,7 @@ CONFIG_USB_UAS=y CONFIG_USB_DWC3=y CONFIG_USB_DWC2=y CONFIG_USB_SERIAL=y+CONFIG_USB_SERIAL_WWAN=y CONFIG_USB_SERIAL_GENERIC=y CONFIG_USB_SERIAL_OPTION=y CONFIG_USB_SERIAL_CH341=ykernel$ git diff drivers/usb/serial/option.cdiff --git a/kernel/drivers/usb/serial/option.c b/kernel/drivers/usb/serial/option.cindex ff67562572..497ca259de 100644--- a/kernel/drivers/usb/serial/option.c+++ b/kernel/drivers/usb/serial/option.c@@ -2126,6 +2126,23 @@ static const struct usb_device_id option_ids[] = {{ USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1404, 0xff) }, /* GosunCn GM500 RNDIS */{ USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1405, 0xff) }, /* GosunCn GM500 MBIM */{ USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1406, 0xff) }, /* GosunCn GM500 ECM/NCM */+#if 1 //Added by Quectel+#if 1 //Added by Quecteldiff --git a/kernel/drivers/usb/serial/option.c b/kernel/drivers/usb/serial/option.cindex ff67562572..497ca259de 100644--- a/kernel/drivers/usb/serial/option.c+++ b/kernel/drivers/usb/serial/option.c@@ -2126,6 +2126,23 @@ static const struct usb_device_id option_ids[] = {{ USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1404, 0xff) }, /* GosunCn GM500 RNDIS */{ USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1405, 0xff) }, /* GosunCn GM500 MBIM */{ USB_DEVICE_INTERFACE_CLASS(0x305a, 0x1406, 0xff) }, /* GosunCn GM500 ECM/NCM */+#if 1 //Added by Quectel+ { USB_DEVICE(0x05C6, 0x9090) }, /* Quectel UC15 */+ { USB_DEVICE(0x05C6, 0x9003) }, /* Quectel UC20 */+ { USB_DEVICE(0x2C7C, 0x0125) }, /* Quectel EC25 */+ { USB_DEVICE(0x2C7C, 0x0121) }, /* Quectel EC21 */+ { USB_DEVICE(0x05C6, 0x9215) }, /* Quectel EC20 */+ { USB_DEVICE(0x2C7C, 0x0191) }, /* Quectel EG91 */+ { USB_DEVICE(0x2C7C, 0x0195) }, /* Quectel EG95 */+ { USB_DEVICE(0x2C7C, 0x0306) }, /* Quectel EG06/EP06/EM06 */+ { USB_DEVICE(0x2C7C, 0x0296) }, /* Quectel BG96 */+ { USB_DEVICE(0x2C7C, 0x0435) }, /* Quectel AG35 */+ { USB_DEVICE(0x2C7C, 0x0512) }, /* Quectel EG12/EG18 */+ { USB_DEVICE(0x2C7C, 0x6026) }, /* Quectel EC200 */+ { USB_DEVICE(0x2C7C, 0x6120) }, /* Quectel UC200 */+ { USB_DEVICE(0x2C7C, 0x6000) }, /* Quectel EC200/UC200 */+ { USB_DEVICE(0x2C7C, 0x6005) }, /* Quectel EC200A-CN*/+#endif{ } /* Terminating entry */ }; MODULE_DEVICE_TABLE(usb, option_ids);@@ -2183,7 +2200,21 @@ static int option_probe(struct usb_serial *serial,struct usb_interface_descriptor *iface_desc =&serial->interface->cur_altsetting->desc;unsigned long device_flags = id->driver_info;-+#if 1 //Added by Quectel+ if(serial->dev->descriptor.idVendor == cpu_to_le16(0x2C7C)) {+ __u16 idProduct = le16_to_cpu(serial->dev->descriptor.idProduct);+ struct usb_interface_descriptor *intf = &serial->interface->cur_altsetting->desc;+ if (intf->bInterfaceClass != 0xFF || intf->bInterfaceSubClass == 0x42) {+ //ECM, RNDIS, NCM, MBIM, ACM, UAC, ADB+ return -ENODEV;+ }+ if ((idProduct&0xF000) == 0x0000) {+ //MDM interface 4 is QMI+ if (intf->bInterfaceNumber == 4 && intf->bNumEndpoints == 3 && intf->bInterfaceSubClass == 0xFF &&intf->bInterfaceProtocol == 0xFF)+ return -ENODEV;+ }+ }+#endif/* Never bind to the CD-Rom emulation interface */if (iface_desc->bInterfaceClass == USB_CLASS_MASS_STORAGE)return -ENODEV;(END)kernel$ git diff drivers/usb/serial/usb_wwan.cdiff --git a/kernel/drivers/usb/serial/usb_wwan.c b/kernel/drivers/usb/serial/usb_wwan.cindex c604ff4546..19fe9838de 100644--- a/kernel/drivers/usb/serial/usb_wwan.c+++ b/kernel/drivers/usb/serial/usb_wwan.c@@ -509,11 +509,14 @@ static struct urb *usb_wwan_setup_urb(struct usb_serial_port *port,if (intfdata->use_zlp && dir == USB_DIR_OUT)urb->transfer_flags |= URB_ZERO_PACKET;+ #if 1 //Added by Quectel for zero packetif (dir == USB_DIR_OUT) {- if ((desc->idVendor == cpu_to_le16(0x1286) &&-desc->idProduct == cpu_to_le16(0x4e3c)))- urb->transfer_flags |= URB_ZERO_PACKET;+ struct usb_device_descriptor *desc = &serial->dev->descriptor;++ if (desc->idVendor == cpu_to_le16(0x2C7C))+ urb->transfer_flags |= URB_ZERO_PACKET;}+#endifreturn urb; }修改以上内核配置后,打开内核log,[ 10.646867] usb 1-1: new high-speed USB device number 4 using ehci-platform[ 10.794964] usb 1-1: New USB device found, idVendor=2c7c, idProduct=6005, bcdDevice= 3.18[ 10.794999] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3[ 10.795007] usb 1-1: Product: Android[ 10.795013] usb 1-1: Manufacturer: Android[ 10.795019] usb 1-1: SerialNumber: 0000[ 10.797366] cdc_ether 1-1:1.0 usb0: register 'cdc_ether' at usb-fd800000.usb-1, CDC Ethernet Device, 02:0c:29:a3:9b:6d[ 10.798340] option 1-1:1.2: GSM modem (1-port) converter detected[ 10.798917] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB0[ 10.799720] option 1-1:1.3: GSM modem (1-port) converter detected[ 10.800241] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB1[ 10.800938] option 1-1:1.4: GSM modem (1-port) converter detected[ 10.801414] usb 1-1: GSM modem (1-port) converter now attached to ttyUSB2这段log说明我们内核部分已经修改OK了。-------------------------------------------------------接下来一直和修改RIL部分: git diff device/rockchip/common/device.mkdiff --git a/device/rockchip/common/device.mk b/device/rockchip/common/device.mkindex c79fd21d6b..c1741daefe 100644--- a/device/rockchip/common/device.mk+++ b/device/rockchip/common/device.mk@@ -273,17 +273,17 @@ PRODUCT_PROPERTY_OVERRIDES += \ro.telephony.default_network=9 ifeq ($(strip $(TARGET_ARCH)), arm64)-PRODUCT_PROPERTY_OVERRIDES += \+#PRODUCT_PROPERTY_OVERRIDES += \vendor.rild.libpath=/vendor/lib64/librk-ril.so PRODUCT_COPY_FILES += \- $(LOCAL_PATH)/4g_modem/bin64/dhcpcd:$(TARGET_COPY_OUT_VENDOR)/bin/dhcpcd \- $(LOCAL_PATH)/4g_modem/lib64/librk-ril.so:$(TARGET_COPY_OUT_VENDOR)/lib64/librk-ril.so+ $(LOCAL_PATH)/4g_modem/bin64/dhcpcd:$(TARGET_COPY_OUT_VENDOR)/bin/dhcpcd+#$(LOCAL_PATH)/4g_modem/lib64/librk-ril.so:$(TARGET_COPY_OUT_VENDOR)/lib64/librk-ril.so else-PRODUCT_PROPERTY_OVERRIDES += \+#PRODUCT_PROPERTY_OVERRIDES += \vendor.rild.libpath=/vendor/lib/librk-ril.so-PRODUCT_COPY_FILES += \+#PRODUCT_COPY_FILES += \$(LOCAL_PATH)/4g_modem/bin32/dhcpcd:$(TARGET_COPY_OUT_VENDOR)/bin/dhcpcd \$(LOCAL_PATH)/4g_modem/lib32/librk-ril.so:$(TARGET_COPY_OUT_VENDOR)/lib/librk-ril.soamediatech@amediatech-Super-Server:~/DISK1/qhq/rk/RK_Android_11.0_sdk$ git diff device/rockchip/rk356x_box/rk356x_box/rk356x_box.mkdiff --git a/device/rockchip/rk356x_box/rk356x_box/rk356x_box.mk b/device/rockchip/rk356x_box/rk356x_box/rk356x_box.mkindex 0866c945a4..74dd85ed4c 100755--- a/device/rockchip/rk356x_box/rk356x_box/rk356x_box.mk+++ b/device/rockchip/rk356x_box/rk356x_box/rk356x_box.mk@@ -110,6 +110,7 @@ PRODUCT_COPY_FILES += \ BOARD_HS_ETHERNET := true+BOARD_HAS_RK_4G_MODEM := true # #add Rockchip properties here #git diff device/rockchip/rk356x_box/rk356x_box/system.propdiff --git a/device/rockchip/rk356x_box/rk356x_box/system.prop b/device/rockchip/rk356x_box/rk356x_box/system.propindex 5b2b456f50..c3602fef4f 100644--- a/device/rockchip/rk356x_box/rk356x_box/system.prop+++ b/device/rockchip/rk356x_box/rk356x_box/system.prop@@ -2,13 +2,13 @@ # system.prop #-#rild.libpath=/system/lib/libreference-ril.so-#rild.libargs=-d /dev/ttyUSB2+rild.libpath=/system/lib64/libreference-ril.so+rild.libargs=-d /dev/ttyUSB2 # Default ecclist ro.ril.ecclist=112,911 wifi.interface=wlan0-rild.libpath=/system/lib/libril-rk29-dataonly.so-rild.libargs=-d /dev/ttyACM0+#rild.libpath=/system/lib/libril-rk29-dataonly.so+#rild.libargs=-d /dev/ttyACM0 persist.tegra.nvmmlite = 1 persist.sys.boot.check=false ro.audio.monitorOrientation=truegit diff hardware/ril/rild/rild.rcdiff --git a/hardware/ril/rild/rild.rc b/hardware/ril/rild/rild.rcindex f6beb5468f..6f48e28323 100644--- a/hardware/ril/rild/rild.rc+++ b/hardware/ril/rild/rild.rc@@ -1,5 +1,6 @@-service vendor.ril-daemon /vendor/bin/hw/rild+#service vendor.ril-daemon /vendor/bin/hw/rild+service ril-daemon /vendor/bin/hw/rild -l /vendor/lib64/libreference-ril.so class main-user radio+user root group radio cache inet misc audio log readproc wakelock capabilities BLOCK_SUSPEND NET_ADMIN NET_RAWgit diff device/rockchip/rk356x_box/rk356x_box/overlay/frameworks/base/core/res/res/values/config.xmldiff --git a/device/rockchip/rk356x_box/rk356x_box/overlay/frameworks/base/core/res/res/values/config.xml b/device/rockchip/rk356x_box/rk356x_box/overlay/frameworks/base/core/res/res/values/config.xmlindex 6021354c69..4150b15aca 100755--- a/device/rockchip/rk356x_box/rk356x_box/overlay/frameworks/base/core/res/res/values/config.xml+++ b/device/rockchip/rk356x_box/rk356x_box/overlay/frameworks/base/core/res/res/values/config.xml@@ -35,6 +35,14 @@   "wifi,1,1,1,-1,true"+"mobile,0,0,0,-1,true"+"mobile_mms,2,0,2,60000,true"+"mobile_supl,3,0,2,60000,true"+"mobile_dun,4,0,2,60000,true"+"mobile_hipri,5,0,3,60000,true"+"mobile_fota,10,0,2,60000,true"+"mobile_ims,11,0,2,60000,true"+"mobile_cbs,12,0,2,60000,true" "ethernet,9,9,9,-1,true" @@ -49,7 +57,7 @@  true-+true