On Sun, Jun 19, 2022 at 2:37 PM Heiko Stuebner <heiko@xxxxxxxxx> wrote: > > Similar to the 'dma-coherent' property, some architectures may be coherent > by default with some devices being non-coherent. Add a property for this > case tool. Looks fine, but I also need a schema. Yeah, that's redundant unfortunately. Maybe someday someone will care enough to generate the spec from the schemas. > > Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx> > --- > Companion patch to RISC-V Zicbom noncoherent dma support > https://lore.kernel.org/linux-riscv/20220619203212.3604485-1-heiko@xxxxxxxxx/ > > source/chapter2-devicetree-basics.rst | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/source/chapter2-devicetree-basics.rst b/source/chapter2-devicetree-basics.rst > index 47d2fad..bdd7b9f 100644 > --- a/source/chapter2-devicetree-basics.rst > +++ b/source/chapter2-devicetree-basics.rst > @@ -832,6 +832,19 @@ Description: > coherent DMA operations. Some architectures have coherent DMA by default > and this property is not applicable. > > +dma-noncoherent > +~~~~~~~~~~~~ > + > +Property name: ``dma-noncoherent`` > + > +Value type: ``<empty>`` > + > +Description: > + For architectures which are by default coherent for I/O, the > + *dma-noncoherent* property is used to indicate a device is not capable of > + coherent DMA operations. Some architectures have non-coherent DMA by > + default and this property is not applicable. > + > name (deprecated) > ~~~~~~~~~~~~~~~~~ > > -- > 2.35.1 >
