Messages in this thread | | | Date | Sat, 26 Aug 2023 14:13:57 +0200 | Subject | Re: [PATCH v3 07/15] media: qcom: camss: Capture VFE CSID dependency in a helper function | From | Konrad Dybcio <> |
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On 26.08.2023 14:12, Bryan O'Donoghue wrote: > On 26/08/2023 13:04, Konrad Dybcio wrote: >>>>> From sdm845 onwards we need to ensure the VFE is powered on prior to >>>>> switching on the CSID. >>>> And what's the symptom if we fail to ensure this? How can someone >>>> adding support for another platform tell whether the match-list >>>> should be expanded? >>> That person has to understand the dependency. >> If we need this workaround, there surely must be something that doesn't >> work without it, a measurable symptom. What is it? > > The CSID lives inside of the VFE therefore the VFE must be power prior to the CSID. > > The symptom will be .. the CSID doesn't come out of reset. Good, that's what I needed to know.
Now we can rename that function to something like camss_csid_inside_vfe() to make it more meaningful
Konrad
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