Messages in this thread | | | Date | Fri, 15 May 2020 13:48:53 +0530 | From | Sibi Sankar <> | Subject | Re: [PATCH v6] iommu/arm-smmu-qcom: Request direct mapping for modem device |
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Hey Will,
On 2020-05-11 23:25, Sibi Sankar wrote: > The modem remote processor has two access paths to DDR. One path is > directly connected to DDR and another path goes through an SMMU. The > SMMU path is configured to be a direct mapping because it's used by > various peripherals in the modem subsystem. Typically this direct > mapping is configured statically at EL2 by QHEE (Qualcomm's Hypervisor > Execution Environment) before the kernel is entered. > > In certain firmware configuration, especially when the kernel is > already > in full control of the SMMU, defer programming the modem SIDs to the > kernel. Let's add compatibles here so that we can have the kernel > program the SIDs for the modem in these cases. > > Signed-off-by: Sibi Sankar <sibis@codeaurora.org> > ---
Now that the patch is reworded can you please pick it up since its the only pending path from the series.
> > V6 > * Rebased on Will's for-joerg/arm-smmu/updates > * Reword commit message and add more details [Stephen] > > drivers/iommu/arm-smmu-qcom.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/iommu/arm-smmu-qcom.c > b/drivers/iommu/arm-smmu-qcom.c > index 5bedf21587a56..cf01d0215a397 100644 > --- a/drivers/iommu/arm-smmu-qcom.c > +++ b/drivers/iommu/arm-smmu-qcom.c > @@ -17,7 +17,9 @@ static const struct of_device_id > qcom_smmu_client_of_match[] = { > { .compatible = "qcom,mdp4" }, > { .compatible = "qcom,mdss" }, > { .compatible = "qcom,sc7180-mdss" }, > + { .compatible = "qcom,sc7180-mss-pil" }, > { .compatible = "qcom,sdm845-mdss" }, > + { .compatible = "qcom,sdm845-mss-pil" }, > { } > };
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