Messages in this thread | | | Subject | Re: [PATCH v8 08/10] gpu: host1x: mipi: Keep MIPI clock enabled till calibration is done | From | Sowjanya Komatineni <> | Date | Thu, 6 Aug 2020 09:51:12 -0700 |
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On 8/6/20 9:45 AM, Dmitry Osipenko wrote: > 06.08.2020 19:41, Sowjanya Komatineni пишет: > ... >>> What about to add 72us delay to the end of start_calibration() in order >>> to ensure that FSM is finished before LP-11? >> Why we should add 72uS in start_calibration() when can use same >> finish_calibration() for both pass/fail cases? >> >> Only timing loose we see is in case of failure we still wait for 250ms >> and as this is failing case I hope should be ok. >> > You said that calibration settings are applied to pads on LP-11, but if > LP-11 happens before FSM is finished, then what values will be applied > if any?
No calibration logic will check for LP-11 only after finishing calibration sequence codes.
After that if it sees LP-11, it will apply results to pads and DONE bit will then be set to 1 indication pad results update.
Unfortunately like I said we don't have status indication for calibrating finished before waiting for LP-11.
ACTIVE bit is common for all PADS. If multiple 6 streams are happening in parallel, ACTIVE will be 1 as long as its calibrating any of the pads and its not for individual pads.
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