[+ Lorenzo] On Mon, Mar 01, 2021 at 03:40:21PM +0800, Shawn Guo wrote: > Though qcom_adreno_smmu_impl is not used by ACPI boot right now, > qcom_smmu_impl is already required at least to boot up Lenovo Flex 5G > laptop. Let's check asl_compiler_id in IORT header to ensure we are > running a QCOM SMMU and create qcom_smmu_impl for it. > > !np is used to check ACPI boot, because fwnode of SMMU device is > a static allocation and thus has_acpi_companion() doesn't work here. > > Signed-off-by: Shawn Guo <shawn.guo@xxxxxxxxxx> > --- > drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 33 ++++++++++++++++++++++ > 1 file changed, 33 insertions(+) I don't know what a "asl_compiler_id" is, but it doesn't sound like it has an awful lot to do with the SMMU. Lorenzo -- any idea what we should be doing here instead? Probably not using ACPI? Will
