From 5e9a5c15bad044820f89f6bc7e490639ef04cc77 Mon Sep 17 00:00:00 2001 From: Yushi Nishida Date: Fri, 27 Nov 2020 21:54:22 +0100 Subject: [PATCH] ipq40xx: fix 5Ghz tx/rx power on the ASUS MAP-AC2200 The ASUS MAP-AC2200 suffers from a lower transmit/receive signal power as compared to the stock firmware. Upon investigation, it was discovered that stock firmware from the GPL_MAP-AC2200_3.0.0.4.384.46249-g97d05bb.tar archive. set the following GPIOs in "release/src/router/rc/init.c". GPIO 44 and 46 have to be set to output high GPIO 45 and 47 have to be set to output low Here are some results, after activating the relevant gpios through cmdline: THX @ slh Fixes: 9ad3967f140 ("ipq40xx: add support for ASUS Lyra") Signed-off-by: Yushi Nishida [slightly rewritten commit, added missing <>) Signed-off-by: Christian Lamparter --- .../arm/boot/dts/qcom-ipq4019-map-ac2200.dts | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/target/linux/ipq40xx/files/arch/arm/boot/dts/qcom-ipq4019-map-ac2200.dts b/target/linux/ipq40xx/files/arch/arm/boot/dts/qcom-ipq4019-map-ac2200.dts index 5b86605daa..3b9078bc08 100644 --- a/target/linux/ipq40xx/files/arch/arm/boot/dts/qcom-ipq4019-map-ac2200.dts +++ b/target/linux/ipq40xx/files/arch/arm/boot/dts/qcom-ipq4019-map-ac2200.dts @@ -176,6 +176,22 @@ bias-pull-down; }; }; + enable_ext_pa_high { + gpio-hog; + gpios = <44 GPIO_ACTIVE_HIGH>, + <46 GPIO_ACTIVE_HIGH>; + output-high; + bias-pull-down; + line-name = "enable external PA output-high"; + }; + enable_ext_pa_low { + gpio-hog; + gpios = <45 GPIO_ACTIVE_HIGH>, + <47 GPIO_ACTIVE_HIGH>; + output-low; + bias-pull-down; + line-name = "enable external PA output-low"; + }; }; &cryptobam { -- 2.30.2