ipq40xx: add PoE passthrough GPIO

Add the GPIO pin of the PoE passthrough switch on the Aruba AP-303H.
Power is activated when the pin is low. It enables a PSE chip, so power
is only supplied to downstream devices when they are 802.3af/at
compliant devices.

Ensure you use a sufficient power supply when chaining a consuming
device after the AP.

Signed-off-by: David Bauer <mail@david-bauer.net>
(cherry picked from commit b40cc46cc882ff97f2752e7837173ffc9f884eb9)

diff --git a/target/linux/ipq40xx/base-files/etc/board.d/03_gpio_switches b/target/linux/ipq40xx/base-files/etc/board.d/03_gpio_switches
index 2035d84993b7df1f9b3852ab38e8c33aea9a1c15..f57d4c5888881772d0e228387d46fdb13191e025 100644 (file)
--- a/target/linux/ipq40xx/base-files/etc/board.d/03_gpio_switches
+++ b/target/linux/ipq40xx/base-files/etc/board.d/03_gpio_switches
@@ -6,6 +6,9 @@ board_config_update
 board=$(board_name)
 
 case "$board" in
+aruba,ap-303h)
+       ucidef_add_gpio_switch "poe_passtrough" "POE passtrough disable" "546" "1"
+       ;;
 cellc,rtl30vw)
        ucidef_add_gpio_switch "w_disable" "W_DISABLE mPCIE pin" "398" "1"
        ucidef_add_gpio_switch "pmd_resin_n" "PMD_RESIN_N pin" "399" "1"