On Tue, Jan 24, 2017 at 03:05:23PM +0800, zhichang.yuan wrote: > There are some special ISA/LPC devices that work on a specific I/O range where > it is not correct to specify a 'ranges' property in DTS parent node as cpu > addresses translated from DTS node are only for memory space on some > architectures, such as Arm64. Without the parent 'ranges' property, current > of_translate_address() return an error. > Here we add special handlings for this case. > During the OF address translation, some checkings will be perfromed to > identify whether the device node is registered as indirect-IO. If yes, the I/O > translation will be done in a different way from that one of PCI MMIO. > In this way, the I/O 'reg' property of the special ISA/LPC devices will be > parsed correctly. > > Signed-off-by: zhichang.yuan <yuanzhichang@xxxxxxxxxxxxx> > Signed-off-by: Gabriele Paoloni <gabriele.paoloni@xxxxxxxxxx> > Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> Shouldn't this be Reviewed-by? Otherwise, looks fine to me. Acked-by: Rob Herring <robh@xxxxxxxxxx> > --- > drivers/of/address.c | 87 ++++++++++++++++++++++++++++++++++++++++++---------- > 1 file changed, 71 insertions(+), 16 deletions(-) > -- 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
