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ramips: allow USB power control on TP-Link MR3020v3 

By switching EPHY_LED4_N_JTRST_N from EPHY_LED4_N to GPIO#39
we can control USB port power an all current revisions of MR3020v3.
It was not a thing on some first revisions, pin was unused.
But for now on all current MR3020v3 boards EPHY_LED4_N_JTRST_N pin
is connected to USB power key.
Also it was not used as EPHY indicator on any revision of the board.

Signed-off-by: Dmitry Chigiryov <dmitry.chigiryov@ya.ru>
[changed author address (used SoB one)]
Signed-off-by: Sungbo Eo <mans0n@gorani.run>
This commit is contained in:
Dmitry Chigiryov 2022-02-25 12:41:12 +03:00 committed by Sungbo Eo
parent 94d4269ec7
commit 9d06f1a618
1 changed files with 12 additions and 1 deletions
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13
target/linux/ramips/dts/mt7628an_tplink_tl-mr3020-v3.dts
View File

@ -75,6 +75,17 @@
gpios = <&gpio 3 GPIO_ACTIVE_LOW>;
};
};
gpio_export {
compatible = "gpio-export";
#size-cells = <0>;
usbpower {
gpio-export,name = "usbpower";
gpio-export,output = <1>;
gpios = <&gpio 39 GPIO_ACTIVE_HIGH>;
};
};
};
&spi0 {
@ -120,7 +131,7 @@
&state_default {
gpio {
groups = "i2s", "refclk", "wdt", "p2led_an", "p1led_an", "p0led_an", "wled_an";
groups = "i2s", "refclk", "wdt", "p4led_an", "p2led_an", "p1led_an", "p0led_an", "wled_an";
function = "gpio";
};
};