The Trump administration's ban on Huawei has now affected who supplies the company's chipset. Huawei has confirmed that the upcoming Huawei Mate 40 smartphone will be the last model to be powered by a Kirin processor. Because of the ban, Taiwan Semiconductor Manufacturing Company (TSMC) concluded its business with Huawei, which affects its HiSilicon subsidiary behind its Kirin chips.
With the company still banned from conducting business with US companies, they find themselves losing TSMC, who gets some of its equipment from US suppliers. TSMC opted to wrap up its chip production orders from Huawei, but it won't be producing anymore. Huawei has focused on designing its processors but not manufacturing them, so now it finds itself in a tight spot. The company hasn't revealed what it plans to do moving forward.
Source: SlashGear