This adds a pinmux to the shared DTSI for TP-Link TL-WR841N/ND v8,
TL-WR842N v2 and TL-MR3420 v2. It is supposed to be the equivalent
of:

/* config gpio4 as normal gpio function */
ath79_gpio_output_select(TL_MR3420V2_GPIO_USB_POWER,AR934X_GPIO_OUT_GPIO);

While at it, move the jtag_disable_pins to &gpio node and remove the
redundant status=okay there.

This should allow to enable USB power on these devices.

Fixes: FS#2753

Signed-off-by: Adrian Schmutzler <[email protected]>
---
 target/linux/ath79/dts/ar9341_tplink.dtsi | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/target/linux/ath79/dts/ar9341_tplink.dtsi 
b/target/linux/ath79/dts/ar9341_tplink.dtsi
index 0a950bd1a6..7c3dc6be96 100644
--- a/target/linux/ath79/dts/ar9341_tplink.dtsi
+++ b/target/linux/ath79/dts/ar9341_tplink.dtsi
@@ -18,9 +18,6 @@
        keys: keys {
                compatible = "gpio-keys";
 
-               pinctrl-names = "default";
-               pinctrl-0 = <&jtag_disable_pins>;
-
                rfkill {
                        label = "WiFi";
                        linux,code = <KEY_RFKILL>;
@@ -85,7 +82,14 @@
 };
 
 &gpio {
-       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&jtag_disable_pins &pmx_usb_power>;
+};
+
+&pinmux {
+       pmx_usb_power: pinmux_usb_power {
+               pinctrl-single,bits = <0x4 0x0 0xff>;
+       };
 };
 
 &eth0 {
-- 
2.20.1


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