drm/rcar-du: dsi: Support DSC in the pipeline

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Enabling DSI clocks on rcar-du needs some tricks as the DU dot clock is
provided by the DSI. Thus, we call rcar_mipi_dsi_pclk_enable() from the
crtc, when enabling the crtc.

With DSC in the pipeline, between the DU and the DSI, the above call
path is broken as the crtc tries to call rcar_mipi_dsi_pclk_enable() on
the DSC.

To solve this problem, make sure we store the DSI bridge to the
rcdu->dsi[] array, instead of the first bridge in the DSI pipeline
(which can be DSC), by checking the bridge's bridge->type.

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@ideasonboard.com>
Link: https://patch.msgid.link/20260907-rcar-du-dsc-v6-3-f8ef711a7494@ideasonboard.com
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>

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Tomi Valkeinen 2026-09-07 12:29:42 +03:00 • committed by Tomi Valkeinen

parent c217ce005b

commit 6cafbb6cf0

2 changed files with 16 additions and 2 deletions

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17

drivers/gpu/drm/renesas/rcar-du/rcar_du_encoder.c

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1

drivers/gpu/drm/renesas/rcar-du/rcar_mipi_dsi.c

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