Message ID | 20190510043421.31393-1-bjorn.andersson@linaro.org |
---|---|
Headers | show |
Series | Qualcomm QCS404 CDSP improvements and fastrpc | expand |
On 09-05-19, 21:34, Bjorn Andersson wrote: > The APPS IOMMU provides contexts for FastRPC, MDP and WLAN, among other > things. Define these. We use the qcom_iommu binding because the ^^^ Double spaces crept in.. > firmware restrictions in incompatible with the arm-smmu. > > Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> > --- > arch/arm64/boot/dts/qcom/qcs404.dtsi | 85 ++++++++++++++++++++++++++++ > 1 file changed, 85 insertions(+) > > diff --git a/arch/arm64/boot/dts/qcom/qcs404.dtsi b/arch/arm64/boot/dts/qcom/qcs404.dtsi > index b213f6acad76..fcde4f0334c2 100644 > --- a/arch/arm64/boot/dts/qcom/qcs404.dtsi > +++ b/arch/arm64/boot/dts/qcom/qcs404.dtsi > @@ -378,6 +378,91 @@ > reg = <0x01937000 0x25000>; > }; > > + apps_iommu: iommu@1e20000 { > + compatible = "qcom,qcs404-iommu", "qcom,msm-iommu-v1"; Did we define qcom,qcs404-iommu in bindings, It does not seem to be there in this patch, next or integration one -- ~Vinod
On Sun 12 May 21:54 PDT 2019, Vinod Koul wrote: > On 09-05-19, 21:34, Bjorn Andersson wrote: > > The APPS IOMMU provides contexts for FastRPC, MDP and WLAN, among other > > things. Define these. We use the qcom_iommu binding because the > ^^^ > Double spaces crept in.. > That's to give you some breathing room while reading it - but not as much as a new paragraph :) > > firmware restrictions in incompatible with the arm-smmu. > > > > Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> > > --- > > arch/arm64/boot/dts/qcom/qcs404.dtsi | 85 ++++++++++++++++++++++++++++ > > 1 file changed, 85 insertions(+) > > > > diff --git a/arch/arm64/boot/dts/qcom/qcs404.dtsi b/arch/arm64/boot/dts/qcom/qcs404.dtsi > > index b213f6acad76..fcde4f0334c2 100644 > > --- a/arch/arm64/boot/dts/qcom/qcs404.dtsi > > +++ b/arch/arm64/boot/dts/qcom/qcs404.dtsi > > @@ -378,6 +378,91 @@ > > reg = <0x01937000 0x25000>; > > }; > > > > + apps_iommu: iommu@1e20000 { > > + compatible = "qcom,qcs404-iommu", "qcom,msm-iommu-v1"; > > Did we define qcom,qcs404-iommu in bindings, It does not seem to be > there in this patch, next or integration one > No, this was entirely intended to fall back on the generic compatible. That said, further testing of this series indicates that we have a cache issue related to the SMMU. In working out this I came up with a series of patches to the arm-smmu driver that allow us to use this with the standard Qualcomm bootloader. So let's ignore patch 7 and 8 in this series until we know how to deal with the SMMU. Regards, Bjorn