1 Introduction In a formal project, I encountered a problem during serial communication where a sequence of data was unexpectedly interrupted by a 00. The data received from the hardware FIFO was correct, but the data received at the upper layer was abnormal. This issue might be obvious to someone with experience, but for those … Read more
Introduction The development of UART has matured significantly, and it is generally sufficient to directly port the 8250 driver. For example, the UART driver for Rockchip directly uses “snps,dw-apb-uart”, which corresponds to <span>Linux-4.9.88/drivers/tty/serial/8250/8250_dw.c</span> driver. uart1: serial@ff190000 { compatible = "rockchip,rk3368-uart", "snps,dw-apb-uart"; reg = <0x0 0xff190000 0x0 0x100>; clock-frequency = <24000000>; clocks = <&cru SCLK_UART1>, <&cru … Read more
(Click the blue text above to quickly follow us) Source: Linux China / bestony https://linux.cn/article-8290-1.html If you have good articles to submit, please click → here for details Today, I will interpret a comic from TurnOff.us titled “InSide The Linux Kernel“. TurnOff.us is a geek comic website where the author Daniel Stori has drawn some … Read more