media: vsp1: Update LIF buffer thresholds

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The LIF module has a data buffer to accommodate clock rate differences
between the DU and the VSP. Several programmable threshold values
control DU start of frame notification by the VSP and VSP clock
stop/resume. The R-Car Gen2 and Gen3 datasheets recommend values for the
different SoCs. Update the driver to use the recommended values for
optimal operation.

Based on a BSP patch from Koji Matsuoka <koji.matsuoka.xm@renesas.com>,
with Gen2 and V3H/V3M updates.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>

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Laurent Pinchart 2017-10-26 02:27:51 -04:00 • committed by Mauro Carvalho Chehab

parent 5eea860a6f

commit de2bc45c84

1 changed files with 25 additions and 4 deletions

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drivers/media/platform/vsp1/vsp1_lif.c

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