On Tue, Jun 21, 2016 at 6:25 AM, Andrew Lunn <andrew@xxxxxxx> wrote: > On Tue, Jun 21, 2016 at 02:02:44AM -0700, Duc Dang wrote: >> Hi Rob, >> >> I got warning on unit_address_vs_reg similar to this >> https://lkml.org/lkml/2016/3/7/43 when using v4.7-rc2 dtc to build dtb >> for X-Gene Mustang: >> >> dhdang@xgene-next=>./scripts/dtc/dtc -O dtb -R 16 -o mustang.dtb >> arch/arm64/boot/dts/apm/apm-mustang.dts >> Warning (unit_address_vs_reg): Node /soc/reboot@17000014 has a unit >> name, but no reg property >> Warning (unit_address_vs_reg): Node /memory has a reg or ranges >> property, but no unit name >> Warning (unit_address_vs_reg): Node /gpio-keys/button@1 has a unit >> name, but no reg property >> >> There are nodes that I cannot change the node-name due to backward >> compatible with old firmware reason (/soc/reboot@17000014 as an >> example). Is there any other way to avoid the warning? > > I think you have that backwards around. The Kernel needs to be > backwards compatible with old DT blobs. DT blobs don't generally need > to be backwards compatible to older kernels. > > However, the kernel should however be happy with or without the unit > name. The unit name is pointless in this case. I should be more specific: The old firmware I am talking about is the bootloader (U-Boot). U-Boot relies on the full node names to do device tree fix-up, so changing the node names will break the fix-up operation in already-released U-Boot. > > Andrew Regards, Duc Dang. -- 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
