Hi Geert, On Fri, Sep 06, 2019, Geert Uytterhoeven wrote: > > So, am I missing something? It seems that the driver is not going to > > work correctly unless pm_runtime_get_sync() gets called. > > QSPI on Koelsch, which uses the same driver, is still working for me, > with debug patches to turn off all unneeded clocks during early boot. Thank you for checking. After enabling the debug messages on my board, I can see that my clock is being enabled before transmission. However, it seem like it is not working correctly for RZ/A2M. So, I will change my focus from the RSPI driver to the RZ/A2M clock driver. Thank you for the suggestion! Chris