Hello Uffe Thank you for your reply. On 9/13/2016, Ulf Hansson wrote: > Because, if you have an external regulator feeding the mmc with power you > should set it up and use it. But in many board designs, there is no control over the regulator supply (or you would rather have your bootloader do that, not the kernel). So what this patch is doing is setting it to a default of 3.3v (for just this SoC) and if someone wants to add a regulator in the board's DT file, that will override the ocr_mask set by the driver. I'm assuming I'll have to do the same for MMC (sh_mmcif.c) once I get to that driver (I need to find my MMC PLUS card first for testing). Chris
