On Thu, Jun 20, 2019 at 6:48 PM George Hilliard thirtythreeforty@gmail.com wrote:
The sunxi SPI peripheral driver attempts to interact with the peripheral in the set_speed function. It also resets the device completely (disabling clocks and power) when the bus is released and
We do set_speed even before this, during spi_get_bus_and_cs call. I don't think claim would have any effect here. and the set_speed here is to update if speed is diff b/w slave and the actual.
If claim required here, this would also need during spi_get_bus_and_cs, but this isn't the case.
turns it back on when claiming. So, if the clock was set up before the bus was claimed, the speed change would have no effect, and the peripheral wouldn't work in many cases.
Can you listed these cases, or some kind of non-working or no effect case would help here.