On 2/26/21 3:21 PM, Marek Vasut wrote:
The spi_get_bus_and_cs() may be called on the same bus and chipselect
with different frequency or mode. This is valid usecase, but the code
fails to notify the controller of such a configuration change. Call
spi_set_speed_mode() in case bus frequency or bus mode changed to let
the controller update the configuration.
The problem can easily be triggered using the sspi command:
=> sspi 0:0@1000
=> sspi 0:0@2000
Without this patch, both transfers happen at 1000 Hz. With this patch,
the later transfer happens correctly at 2000 Hz.
Signed-off-by: Marek Vasut <ma...@denx.de>
Cc: Jagan Teki <ja...@amarulasolutions.com>
Cc: Patrick Delaunay <patrick.delau...@st.com>
This bugfix is still missing from upstream.
