On 2/14/25 5:16 AM, Denzeel Oliva wrote: > On Thu, Feb 13, 2025 at 07:20:22AM +0000, Tudor Ambarus wrote: >> doesn't the 32 bit register restriction apply to uart as it applies to >> SPI? If so, you shall probably fallback to gs101. > > Of course not, downstream of the UART serial driver there is nothing > specified about 32-bit access restriction, nothing explicitly > in the driver. [0] > > https://github.com/pascua28/android_kernel_samsung_s20fe/blob/3be539e9cd22b89ba3cc8282945a0c46ff27341d/drivers/tty/serial/samsung.c#L1543 that's very strange. uart and spi are part of the same USI IP, on the same bus. I don't think you can have the same IP requiring 32 bit accesses for SPI but allow 8-bit accesses for uart. Maybe SPI can work with 8bit accesses? How did you test SPI and uart?
