Messages in this thread | | | Subject | Re: [RFC PATCH v3 16/18] gpu: host1x: mipi: Split tegra_mipi_calibrate and tegra_mipi_wait | From | Sowjanya Komatineni <> | Date | Thu, 16 Jul 2020 16:06:25 -0700 |
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On 7/16/20 4:01 PM, Dmitry Osipenko wrote: > 17.07.2020 01:49, Sowjanya Komatineni пишет: >>> What keeps MIPI clock enabled after completion of the >>> tegra_mipi_calibrate() invocation? >> MIPI clock is disabled at end of tegra_mipi_calibrate and is re-enabled >> during tegra_mipi_wait. >> >> I think I should fix this to keep the clock enabled till calibration >> results are latched. >> >> All consumers of tegra_mipi_calibrate() will call tegra_mipi_wait(). >> >> So will remove clk_disable mipi clk at end of tegra_mipi_calibrate() and >> clk_enable mipi_clk at beginning of tegra_mipi_wait() > Isn't it possible to perform the calibration after enabling CSI and > before of starting the sensor streaming? Currently this is what I am doing. Triggering calibration start during CSI receiver being ready and then sensor streaming will happen where internal MIPI CAL detects for LP -> HS transition and applies results to pads. So checking for calibration results after sensor stream is enabled
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