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[RG34XXSP] Permanently unbind unused USB1-3 host controllers at boot #101

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[RG34XXSP] Permanently unbind unused USB1-3 host controllers at boot #101

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19 changes: 19 additions & 0 deletions board/allwinner/h700/fsoverlay/etc/init.d/S29rg34xx-sp-usb
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Original file line number Diff line number Diff line change
@@ -0,0 +1,19 @@
#!/bin/sh

if [ "$1" != "start" ]; then
exit 0
fi

# USB host controllers 1/2/3 (ehci1-3/ohci1-3) are not physically wired on
# this board - usbc1/2/3 in the devicetree carry usb_host_init_state=1 and
# no drvvbus-supply regulator (only usbc0, the real OTG/charging port, has
# one - see rg34xx-sp.dts), so nothing can ever be attached to them.
BOARD=$(cat /boot/boot/knulli.board)
if [ "$BOARD" = "rg34xx-sp" ]; then
[ -e /sys/bus/platform/drivers/sunxi-ohci/5200000.ohci1-controller ] && echo 5200000.ohci1-controller > /sys/bus/platform/drivers/sunxi-ohci/unbind 2>/dev/null
[ -e /sys/bus/platform/drivers/sunxi-ehci/5200000.ehci1-controller ] && echo 5200000.ehci1-controller > /sys/bus/platform/drivers/sunxi-ehci/unbind 2>/dev/null
[ -e /sys/bus/platform/drivers/sunxi-ohci/5310000.ohci2-controller ] && echo 5310000.ohci2-controller > /sys/bus/platform/drivers/sunxi-ohci/unbind 2>/dev/null
[ -e /sys/bus/platform/drivers/sunxi-ehci/5310000.ehci2-controller ] && echo 5310000.ehci2-controller > /sys/bus/platform/drivers/sunxi-ehci/unbind 2>/dev/null
[ -e /sys/bus/platform/drivers/sunxi-ohci/5311000.ohci3-controller ] && echo 5311000.ohci3-controller > /sys/bus/platform/drivers/sunxi-ohci/unbind 2>/dev/null
[ -e /sys/bus/platform/drivers/sunxi-ehci/5311000.ehci3-controller ] && echo 5311000.ehci3-controller > /sys/bus/platform/drivers/sunxi-ehci/unbind 2>/dev/null
fi