On Fri Jan 5, 2024 at 5:30 PM CET, Stephan Gerhold wrote:
> On Fri, Jan 05, 2024 at 05:15:44PM +0100, Luca Weiss wrote:
> > Add crypto engine (CE) and CE BAM related nodes and definitions for this
> > SoC.
> >
> > For reference:
> >
> > [ 2.297419] qcrypto 1dfa000.crypto: Crypto device found, version 5.5.1
> >
> > Signed-off-by: Luca Weiss <luca.weiss@xxxxxxxxxxxxx>
> > ---
> > arch/arm64/boot/dts/qcom/sm6350.dtsi | 31 +++++++++++++++++++++++++++++++
> > 1 file changed, 31 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/sm6350.dtsi b/arch/arm64/boot/dts/qcom/sm6350.dtsi
> > index 8fd6f4d03490..516aadbb16bb 100644
> > --- a/arch/arm64/boot/dts/qcom/sm6350.dtsi
> > +++ b/arch/arm64/boot/dts/qcom/sm6350.dtsi
> > @@ -1212,6 +1212,37 @@ ufs_mem_phy_lanes: phy@1d87400 {
> > };
> > };
> >
> > + cryptobam: dma-controller@1dc4000 {
> > + compatible = "qcom,bam-v1.7.4", "qcom,bam-v1.7.0";
> > + reg = <0 0x01dc4000 0 0x24000>;
> > + interrupts = <GIC_SPI 272 IRQ_TYPE_LEVEL_HIGH>;
> > + #dma-cells = <1>;
> > + qcom,ee = <0>;
> > + qcom,controlled-remotely;
> > + num-channels = <16>;
> > + qcom,num-ees = <4>;
> > + iommus = <&apps_smmu 0x432 0x0000>,
> > + <&apps_smmu 0x438 0x0001>,
> > + <&apps_smmu 0x43f 0x0000>,
> > + <&apps_smmu 0x426 0x0011>,
> > + <&apps_smmu 0x436 0x0011>;
>
> The last two lines look equivalent to me: 0x436 & ~0x0011 = 0x426.
I don't understand the IOMMU SID + mask really, but I think I've seen
somewhere before like here that TZ can be a bit picky with the SIDs?
https://lore.kernel.org/linux-arm-msm/opqdrmyj3y64nqqqmakjydn5rkspizufyeavm7ec7c7ufqz4wk@ey2a7bq3shfj/
https://lore.kernel.org/linux-arm-msm/11b5db69-49f5-4d7b-81c9-687d66a5cb0d@xxxxxxxxxx/
I don't quite want to risk having some obscure use case breaking because
we cleaned up the dts ;)
But if you're more sure than me that it won't break, let me know!
>
> It's also a bit weird that the mask has one more digit than the stream
> ID. And ordered numerically (by stream ID, first number) it would be a
> bit easier to read. :-)
Sorting them is no problem, can do that for v2.
>
> Thanks,
> Stephan
