Support Two USB Disks through USB Hub in Android

shaojun_wang — Fri, 11 Oct 2013 02:29:10 GMT

1. In device/fsl/imx6/sabresd/vold.fstab, change

dev_mount udisk /mnt/udisk auto /devices/platform/fsl-ehci.0/usb1

dev_mount udisk /mnt/udisk auto /devices/platform/fsl-ehci.0/usb1/1-1/1-1.4

dev_mount udisk1 /mnt/udisk1 auto /devices/platform/fsl-ehci.0/usb1/1-1/1-1.1

1-1 is usb hub device name in sysfs, 1-1.4 and 1-1.1 is usb hub port number in sysfs. You can get this number from kernel log when insert usb hub and usb disk.

2. In device/fsl/imx6/sabresd/overlay/frameworks/base/core/res/res/xml/storage_list.xm, add below code before </StorageList>.

<storage android:mountPoint="/mnt/udisk1"

android:storageDescription="@string/storage_usb"

android:primary="false"

android:removable="true" />

3. Apply below patch in device/fsl/imx6/etc/init.rc

diff --git a/imx6/etc/init.rc b/imx6/etc/init.rc

index b33b654..397b809

--- a/imx6/etc/init.rc

+++ b/imx6/etc/init.rc

@@ -24,7 +24,7 @@ loglevel 3

export LOOP_MOUNTPOINT /mnt/obb

export SHM_MOUNTPOINT /mnt/shm

export EXTERNAL_STORAGE /mnt/sdcard

- export SECONDARY_STORAGE /mnt/extsd:/mnt/udisk

+ export SECONDARY_STORAGE /mnt/extsd:/mnt/udisk:/mnt/udisk1

export BOOTCLASSPATH /system/framework/core.jar:/system/framework/core-junit.jar:/system/framework/bouncycastle.jar:/system/framework/ext.jar:/system/framework/framework.jar:/system/framework/

export LIGHTSENSOR_PATH /sys/class/i2c-adapter/i2c-1/1-0044

@@ -55,6 +55,8 @@ loglevel 3

symlink /mnt/extsd /extsd

mkdir /mnt/udisk 0000 system system

symlink /mnt/udisk /udisk

+ mkdir /mnt/udisk1 0000 system system

+ symlink /mnt/udisk1 /udisk1

mkdir /system

mkdir /data 0771 system system

mkdir /cache 0770 system cache

i.MX ProcessorsのトピックSupport Two USB Disks through USB Hub in Android

Support Two USB Disks through USB Hub in Android