[openwrt/openwrt] ramips: improve support for H3C TX180x series devices

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/a7d8b54f86f572409b40c7ab4ad3982a1eabfdfe

commit a7d8b54f86f572409b40c7ab4ad3982a1eabfdfe
Author: Shiji Yang <yangshiji66 at qq.com>
AuthorDate: Mon Dec 12 11:18:41 2022 +0000

    ramips: improve support for H3C TX180x series devices
    
    1. Explicitly declare gpio pin groups to ensure that gpio works properly.
    
    2. Override bootargs in device tree to avoid modifying u-boot envs during
       initial installation.
    
    Tested on H3C TX1801 Plus
    
    Signed-off-by: Shiji Yang <yangshiji66 at qq.com>
---
 target/linux/ramips/dts/mt7621_h3c_tx180x.dtsi | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/target/linux/ramips/dts/mt7621_h3c_tx180x.dtsi b/target/linux/ramips/dts/mt7621_h3c_tx180x.dtsi
index 61f2f8cc98..54d7908e40 100644
--- a/target/linux/ramips/dts/mt7621_h3c_tx180x.dtsi
+++ b/target/linux/ramips/dts/mt7621_h3c_tx180x.dtsi
@@ -16,6 +16,7 @@
 
 	chosen {
 		bootargs = "console=ttyS0,115200";
+		bootargs-override = "console=ttyS0,115200";
 	};
 
 	keys {
@@ -141,6 +142,13 @@
 	status = "disabled";
 };
 
+&state_default {
+	gpio {
+		groups = "jtag";
+		function = "gpio";
+	};
+};
+
 &switch0 {
 	ports {
 		port at 1 {