On Friday 02 September 2016 02:35 PM, Nishanth Menon wrote: > pinmuxing for DRA7x/AM57x family of processors need to be done in IO > isolation as part of initial bootloader executed from SRAM. This is > done as part of iodelay configuration sequence and is required due to > the limitations introduced by erratum ID: i869[1] and elaborated in > the Technical Reference Manual[2] 18.4.6.1.7 Isolation Requirements. > > Only peripheral that is permitted for dynamic pin mux configuration is > MMC. This is to accommodate the requirements for varied speeds (which Actually its MMC and DCAN. DCAN because of i893 ("DCAN Initialization Sequence"). But I can see you may have omitted reference to it since DCAN is not really used on the x15. Thanks, Sekhar -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html