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apm821xx: detect sd-card media changes for the WNDR4700

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The insertion or removal of the sd-card cannot be detected
by the hardware itself. This is by design. To workaround this,
for the WNDR4700 unload/load the dwc2 module in case the
the special SD CARD GPIO line is low/high.

Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
This commit is contained in:
Christian Lamparter 2016-08-30 19:42:38 +02:00 committed by John Crispin
parent 1974ad5a96
commit f7c1d9c8a5
2 changed files with 20 additions and 1 deletions
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19
target/linux/apm821xx/base-files/etc/rc.button/BTN_1 Executable file
View file

@ -0,0 +1,19 @@
#!/bin/sh
. /lib/functions.sh
. /lib/apm821xx.sh
BOARD=$(apm821xx_board_name)
if [ $BOARD == "wndr4700" ]; then
case "$ACTION" in
released)
rmmod dwc2
;;
pressed)
modprobe dwc2
;;
esac
fi
return 0

2
target/linux/apm821xx/dts/wndr4700.dts
View file

@ -432,7 +432,7 @@
sdcard {
label = "SDCard inserted";
gpios = <&GPIO0 7 0>;
gpios = <&GPIO0 7 1>;
linux,code = <0x101>; /* BTN_1 */
};
};