duos: support usb storage like USB flash disk

build/boards/cv181x/cv1813h_milkv_duos_emmc/dts_riscv/cv1813h_milkv_duos_emmc.dts

@@ -21,6 +21,10 @@
 	status = "okay";
 };
 
+&usb {
+	vbus-gpio = <&portb 6 0>;
+};
+
 / {
 
 };

build/boards/cv181x/cv1813h_milkv_duos_emmc/linux/cvitek_cv1813h_milkv_duos_emmc_defconfig

@@ -30,6 +30,8 @@ CONFIG_STRICT_KERNEL_RWX=n
 CONFIG_MODULES=y
 CONFIG_MODULE_FORCE_LOAD=y
 CONFIG_MODULE_UNLOAD=y
+CONFIG_BLOCK=y
+CONFIG_BLK_SCSI_REQUEST=y
 # CONFIG_BLK_DEV_BSG is not set
 # CONFIG_MQ_IOSCHED_DEADLINE is not set
 # CONFIG_MQ_IOSCHED_KYBER is not set
@@ -52,6 +54,11 @@ CONFIG_MTD_CMDLINE_PARTS=y
 # CONFIG_MTD_OF_PARTS is not set
 CONFIG_MTD_BLOCK=y
 CONFIG_MTD_RAW_NAND=y
+CONFIG_SCSI=y
+CONFIG_SCSI_DMA=y
+CONFIG_SCSI_PROC_FS=y
+CONFIG_BLK_DEV_SD=y
+CONFIG_SCSI_LOWLEVEL=y
 CONFIG_NETDEVICES=y
 # CONFIG_NET_CORE is not set
 # CONFIG_NET_VENDOR_ALACRITECH is not set
@@ -369,6 +376,7 @@ CONFIG_SND_SOC_CV182XADAC=y
 CONFIG_SND_SOC_CV1835_USE_AUDIO_PLL=y
 CONFIG_CV1835_I2S_SUBSYS=y
 CONFIG_USB=y
+CONFIG_USB_STORAGE=y
 CONFIG_USB_DWC2=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_LIBCOMPOSITE=y
@@ -388,6 +396,7 @@ CONFIG_USB_CONFIGFS=y
 CONFIG_USB_CONFIGFS_SERIAL=y
 CONFIG_USB_CONFIGFS_RNDIS=y
 CONFIG_USB_CONFIGFS_ACM=y
+CONFIG_USB_ROLE_SWITCH=y
 CONFIG_MMC=y
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_PLTFM=y

build/boards/cv181x/cv1813h_milkv_duos_emmc/u-boot/cvi_board_init.c

@@ -12,5 +12,8 @@ int cvi_board_init(void)
 	PINMUX_CONFIG(VIVO_D1, IIC4_SCL);
 	PINMUX_CONFIG(VIVO_D0, IIC4_SDA);
 
+	// USB
+	PINMUX_CONFIG(USB_VBUS_EN, XGPIOB_5);
+
 	return 0;
 }

device/milkv-duos/overlay/mnt/system/usb-host.sh

@@ -1,4 +1,29 @@
 #!/bin/sh
 
+usb_en=453
+usb_select=510
+
+function set_gpio()
+{
+	local gpio_num=$1
+	local gpio_val=$2
+	local gpio_path="/sys/class/gpio/gpio${gpio_num}"
+
+	if test -d ${gpio_path}; then
+		echo "GPIO ${gpio_num} already exported" >> /tmp/usb.log 2>&1
+	else
+		echo ${gpio_num} > /sys/class/gpio/export
+	fi
+
+	echo out > ${gpio_path}/direction
+	sleep 0.1
+	echo ${gpio_val} > ${gpio_path}/value
+}
+
+set_gpio ${usb_select} 1
+sleep 0.5
+set_gpio ${usb_en} 1
+sleep 0.5
+
 echo host > /proc/cviusb/otg_role >> /tmp/usb.log 2>&1
 

device/milkv-duos/overlay/mnt/system/usb-rndis.sh

@@ -1,5 +1,30 @@
 #!/bin/sh
 
+usb_en=453
+usb_select=510
+
+function set_gpio()
+{
+	local gpio_num=$1
+	local gpio_val=$2
+	local gpio_path="/sys/class/gpio/gpio${gpio_num}"
+
+	if test -d ${gpio_path}; then
+		echo "GPIO ${gpio_num} already exported" >> /tmp/rndis.log 2>&1
+	else
+		echo ${gpio_num} > /sys/class/gpio/export
+	fi
+
+	echo out > ${gpio_path}/direction
+	sleep 0.1
+	echo ${gpio_val} > ${gpio_path}/value
+}
+
+set_gpio ${usb_en} 0
+sleep 0.5
+set_gpio ${usb_select} 0
+sleep 0.5
+
 /etc/uhubon.sh device >> /tmp/rndis.log 2>&1
 /etc/run_usb.sh probe rndis >> /tmp/rndis.log 2>&1
 /etc/run_usb.sh start rndis >> /tmp/rndis.log 2>&1