drm: rcar-du: Add support for external pixel clock

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The DU uses the module functional clock as the default pixel clock, but
supports using an externally supplied pixel clock instead. Support this
by adding the external pixel clock to the DT bindings, and selecting the
clock automatically at runtime based on the requested mode pixel
frequency.

The input clock pins to DU channels routing is configurable, but
currently hardcoded to connect input clock i to channel i.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>

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This commit is contained in:

Laurent Pinchart 2014-12-09 00:24:49 +02:00

parent 0c1c877681

commit 1b30dbde85

5 changed files with 74 additions and 9 deletions

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4

Documentation/devicetree/bindings/video/renesas,du.txt

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60

drivers/gpu/drm/rcar-du/rcar_du_crtc.c

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1

drivers/gpu/drm/rcar-du/rcar_du_crtc.h

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14

drivers/gpu/drm/rcar-du/rcar_du_group.c

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4

drivers/gpu/drm/rcar-du/rcar_du_regs.h

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