Re: [PATCH v5 5/6] iommu/arm-smmu: Add support for qcom,smmu-v2 variant

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Hi Rob,


On 01/12/2018 03:53 AM, Rob Herring wrote:
On Tue, Jan 09, 2018 at 03:31:48PM +0530, Vivek Gautam wrote:
qcom,smmu-v2 is an arm,smmu-v2 implementation with specific
clock and power requirements. This smmu core is used with
multiple masters on msm8996, viz. mdss, video, etc.
Add bindings for the same.

Signed-off-by: Vivek Gautam <vivek.gautam@xxxxxxxxxxxxxx>
---

  * Major change in this patch -
    Changed compatible string from 'qcom,msm8996-smmu-v2' to
    'qcom,smmu-v2' to reflect the IP version rather than the
    platform on which it is used.
The bugs and how things are connected are all the same? I'd suggest you
keep both strings.

Sure,
    compatible = "qcom,msm8996-smmu-v2", "qcom,smmu-v2";


    The same IP is used across multiple platforms including msm8996,
    and sdm845 etc.
But for only 2 or so platforms a fallback is not really worth it. You'll
probably be on SMMUv3 before too long...
Right. There's msm8998 as well, but as you said keeping both strings
will make more sense.
Thanks.

Best regards
Vivek

[snip]

--
The Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

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