On 23/01/2024 10:07, Mihai.Sain@xxxxxxxxxxxxx wrote: > Hi Krzysztof, > > I'm sorry for quoting (email is sent from Outlook). > The sdmmc controller from SAM9 MPUs doesn't support the IO voltage signaling/switching required by the UHS sd-card. > On the electrical schematics of the boards the controller and sd-card power pins are connected to 3V3 regulator. > On the SAMA5 MPUs there is support for IO voltage switching but since we have issues with the tuning procedure required but the UHS cards, > we want to keep vqmmc at 3V3 in order to use high-speed mode. OK, it is fine for me. Best regards, Krzysztof
