On Wed, Feb 24, 2021 at 5:28 PM Bin Meng <[email protected]> wrote: > > From: Bin Meng <[email protected]> > > The eTSEC node should provide an empty <ranges> property in the > eTSEC node, otherwise of_translate_address() in the Linux kernel > fails to get the eTSEC register base, reporting: > > OF: ** translation for device /platform@f00000000/ethernet@0/queue-group ** > OF: bus is default (na=1, ns=1) on /platform@f00000000/ethernet@0 > OF: translating address: 00000000 > OF: parent bus is default (na=1, ns=1) on /platform@f00000000 > OF: no ranges; cannot translate > > Per devicetree spec v0.3 [1] chapter 2.3.8: > > If the property is not present in a bus node, it is assumed that > no mapping exists between children of the node and the parent > address space. > > This is why of_translate_address() aborts the address translation. > Apparently U-Boot devicetree parser seems to be tolerant with > missing <ranges> as this was not noticed when testing with U-Boot. > The empty <ranges> property is present in all kernel shipped dtsi > files for eTSEC, Let's add it to conform with the spec. > > [1] > https://github.com/devicetree-org/devicetree-specification/releases/download/v0.3/devicetree-specification-v0.3.pdf > > Fixes: fdfb7f2cdb2d ("e500: Add support for eTSEC in device tree") > Signed-off-by: Bin Meng <[email protected]> > --- > > hw/ppc/e500.c | 1 + > 1 file changed, 1 insertion(+) >
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