>>> That seems to suggest that none of the status bits auto-clears, and that >>> the above code clearing intr_status should be removed entirely. >>> Am I missing something ? >> >> You are right. I just pushed another version of the previous patch with this >> new hunk : >> >> @@ -188,7 +200,6 @@ static void aspeed_i2c_bus_handle_cmd(As >> { >> bus->cmd &= ~0xFFFF; >> bus->cmd |= value & 0xFFFF; >> - bus->intr_status = 0; >> if (bus->cmd & I2CD_M_START_CMD) { >> uint8_t state = aspeed_i2c_get_state(bus) & I2CD_MACTIVE ? >> >> >> The QEMU palmetto and witherspoon machines seem to behave fine. Can you give >> it a try ? >> > > Works fine for me for all affected qemu platforms. > > How do you want to proceed with the qemu patches ? I attached my patches > for reference. Maybe you can add them to your tree if they are ok and submit > the entire series together to the qemu mailing list ? yes. They are pushed in my aspeed-3.1 branch. I will send the series on the list. Thanks, C.