Hi Angelo Le lun. 15 mai 2023 à 13:44, AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx> a écrit : > > Il 11/05/23 18:29, amergnat@xxxxxxxxxxxx ha scritto: > > From: Fabien Parent <fparent@xxxxxxxxxxxx> > > > > On downstream, we observe that the MSDC IP (used by the emmc, the micro > > SD card and the WiFi) isn't working properly if the VMC regulator is > > shutdown. > > > > Make sure it is always on. > > I don't understand the power tree of this board: if your VQMMC is VIO18 and > *not* VMC, why is that required? I don't have the full history of the downstream, but I think there is a schematic issue or HW conception issue because I see an extra pin "MSDC1_INSI" (which isn't part of MSDC IP) with VIO18 pull-up. That's why, I guess, VQMMC = VIO18 for MMC1. But since DVDD28_MSDC1 = VMC, VQMMC should be equal to VMC. The always-on will be removed. Regards, Alexandre
