On Tue, Nov 30, 2021 at 06:02:50PM +0800, Wells Lu wrote: > Sunplus SP7021 is an ARM Cortex A7 (4 cores) based SoC. It integrates > many peripherals (ex: UART, I2C, SPI, SDIO, eMMC, USB, SD card and > etc.) into a single chip. It is designed for industrial control > applications. The subject line is wrong again. This has nothing to do with a pin controller. Andrew