On Wed, Nov 25, 2015 at 12:46 PM, Curt Brune <curt@xxxxxxxxxxxxxxxxxxx> wrote: > Currently for PowerPC systems using device tree, the legacy serial > ports are allocated in the order by which they are found in the device > tree structure. > > This can cause problems in cases where the device tree nodes are > sysnthesized by an external program (kexec for example), which may not > preserve the original order of the device tree nodes. This in turn > can result in the serial console changing from ttyS0 to ttyS1 > unexpectedly. > > This patch uses the 'cell-index' property (if present) to map UART > device tree nodes to legacy serial port number. The cell-index > property is widely used in all the Freescale .dts files for PowerPC. If cell-index is already present in the dtbs, then this is okay. Otherwise use aliases. cell-index is pretty much deprecated. Rob -- 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
