ramips: mt7621: enable SX150x driver

The Netgear R6800 and R6700v2 devices have a Semtech SX1503 GPIO
expander controlling the device LEDs. This expander was initially
supported on 4.14, but support was lost in the transition to 5.4.

Since this driver cannot be built as a kernel module, enable it in the
kernel config for all mt7621 devices.

Run-tested on a Netgear R6800.

Cc: Stijn Segers <foss@volatilesystems.org>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Sander Vanheule <sander@svanheule.net>
Tested-by: Stijn Segers <foss@volatilesystems.org>
(cherry picked from commit 773949c152f7378a303919e790210113012fea04)

diff --git a/target/linux/ramips/mt7621/config-5.4 b/target/linux/ramips/mt7621/config-5.4
index fba22a39cf825da644dd379bbc4b5fcda0349f54..057c782760ae6d613e0f5c27254c7667d86b2398 100644 (file)
--- a/target/linux/ramips/mt7621/config-5.4
+++ b/target/linux/ramips/mt7621/config-5.4
@@ -210,6 +210,7 @@ CONFIG_PHYLINK=y
 CONFIG_PINCTRL=y
 CONFIG_PINCTRL_RT2880=y
 # CONFIG_PINCTRL_SINGLE is not set
+CONFIG_PINCTRL_SX150X=y
 CONFIG_POWER_RESET=y
 CONFIG_POWER_RESET_GPIO=y
 CONFIG_POWER_SUPPLY=y