On 17/08/16 17:49, Tony Lindgren wrote: > * Ladislav Michl <ladis@xxxxxxxxxxxxxx> [160816 11:51]: >> Hi Roger, >> >> On Mon, Aug 15, 2016 at 10:22:45AM +0300, Roger Quadros wrote: >>> Hi Ladis, >>> >>> On 14/08/16 11:43, Ladislav Michl wrote: >>>> Hi there, >>>> >>>> some IGEPv2 boards comes either with NAND or OneNAND flash memory and I'd >>>> like to support that with single kernel and fdt blob. As U-Boot can >>>> already detect flash type used I thought that having both onenand@0,0 >>>> and nand@0,0 nodes in FDT would be easiest method. Bootloader could then >>>> set status="disabled" property on memory not detected. >>> >>> Yes, that should work. >> >> That logic should be positive or negative? There are both aproaches >> present in kernel and it is not immediately obvious under what cimcumstaces >> is one better than another. Having both enabled by default means higher >> probability that kernel boots even if bootloader does not support >> FDT manipulation, but I'm unsure wheneven probe code is robust enough >> not to break anything. Thoughts? > > We "should" be able to have both enabled in the dts just fine have > it probed and have onenand or nand probe bail out for the one not found. > Not sure what happens with that right now though :) That should work as well. As both request for CS0 space, the 2nd one will fail to be probed. cheers, -roger -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
