From 9d06f1a618530ecfbd945cf3fb46b610f9b52c86 Mon Sep 17 00:00:00 2001 From: Dmitry Chigiryov Date: Fri, 25 Feb 2022 12:41:12 +0300 Subject: [PATCH] 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 [changed author address (used SoB one)] Signed-off-by: Sungbo Eo --- .../ramips/dts/mt7628an_tplink_tl-mr3020-v3.dts | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/target/linux/ramips/dts/mt7628an_tplink_tl-mr3020-v3.dts b/target/linux/ramips/dts/mt7628an_tplink_tl-mr3020-v3.dts index 8860e53efc..3ffa732541 100644 --- a/target/linux/ramips/dts/mt7628an_tplink_tl-mr3020-v3.dts +++ b/target/linux/ramips/dts/mt7628an_tplink_tl-mr3020-v3.dts @@ -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"; }; };