The Hydra and Superhydra (P3041DS, P5020DS, and P5040DS) boards have a second USB port that can be configured in either host, peripheral (aka device), or OTG (on-the-go) mode. When configured in host mode, if the port is connected to another USB host, damage to the board can occur.
To avoid this, we change the default setting to peripheral mode. Ideally, we'd set it to OTG mode, but currently there is no OTG support for these boards.
Setting the hwconfig variable will also update the device tree, and so Linux will configure the port for peripheral mode as well.
Signed-off-by: Shaohui Xie Shaohui.Xie@freescale.com --- include/configs/corenet_ds.h | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/include/configs/corenet_ds.h b/include/configs/corenet_ds.h index 47f7b7e..1489b34 100644 --- a/include/configs/corenet_ds.h +++ b/include/configs/corenet_ds.h @@ -713,6 +713,7 @@ #define CONFIG_EXTRA_ENV_SETTINGS \ "hwconfig=fsl_ddr:ctlr_intlv=cacheline," \ "bank_intlv=cs0_cs1;" \ + "usb2:dr_mode=peripheral,phy_type=" __stringify(__USB_PHY_TYPE) ";"\ "usb1:dr_mode=host,phy_type=" __stringify(__USB_PHY_TYPE) "\0"\ "netdev=eth0\0" \ "uboot=" __stringify(CONFIG_UBOOTPATH) "\0" \