#20369: Xiaomi mini Wireless signal is very weak ----------------------+-------------------------------- Reporter: rexchou | Owner: developers Type: defect | Status: reopened Priority: high | Milestone: Chaos Calmer 15.05 Component: kernel | Version: Trunk Resolution: | Keywords: ----------------------+--------------------------------
Comment (by anonymous): Replying to [comment:8 AndreiM]: > Right, the `mt76` will suffer improvements, I'm sure; there are good people working on it, alas too few… > > Digression aside, yes, the 2.4 GHz throughput is very low. Even now (50-80% faster), it behaves more like 11g :-( I think all the PA/LNA magic happens in the [https://dev.openwrt.org/browser/trunk/target/linux/ramips/patches-3.18/0030 -pinctrl-ralink-add-pinctrl-driver.patch `pinctrl` driver], where `rt305x` has hooks for both PA and LNA, whereas `mt7620` only has support for the former. We could attempt to mirror the LNA stuff (e.g., `RT3352_GPIO_MODE_LNA` -> `MT7620_GPIO_MODE_LNA`, `rt3352_lna_func` -> `lna_grp`, etc), but the major piece of information missing is the content of `lna_grp[] = { FUNC("lna", 0, ?, ?) }`… Looking at the `MT7620` data sheet, I think some sort of LNA exists, although [https://lists.openwrt.org/pipermail/openwrt- devel/2015-September/035571.html people claim no external PA or LNA]. > > At this point, I only know that I increased my received signal strength from very low to usable (about +15 in SNR); if we manage something similar for LNA, it'd be great. We just need to find the right `pin_first` & `pin_count`… Any clue from some leaked MTK driver sources? -- Ticket URL: <https://dev.openwrt.org/ticket/20369#comment:65> OpenWrt <http://openwrt.org> Opensource Wireless Router Technology _______________________________________________ openwrt-tickets mailing list openwrt-tickets@lists.openwrt.org https://lists.openwrt.org/cgi-bin/mailman/listinfo/openwrt-tickets