On 23. 4. 19. 16:59, Krzysztof Kozlowski wrote: > On 19/04/2023 08:06, Jaewon Kim wrote: >> 1. >> s3cx64xx driver was supporting polling mode using quirk for SOC without DMA. >> However, in order to use PIO mode as an optional rather than a quirk, when DMA >> is not described, spi operates with pio mode rather than probe fail. >> >> 2. >> Fixed the problem of high CPU usage in PIO mode. >> >> 3. >> If the transfer data size is larger than 32-bit, IRQ base PIO mode used. >> > What changed in the patches? You need to provide changelog. Oh, I missed changes while copy/pasting. I will add changes v2 from v3 together. Changes in V2. - DeviceTree property not used to change PIO mod. - Add cpu_releax() in polling loop - Add lower limit in IRQ mode > > Best regards, > Krzysztof > > Thanks Jaewon Kim
